Answer:
The Classification of elementary students and the basis of their state of mind determines how they are and how they react to specific things.
Explanation:
The classification of that specific person depends on their qualifications
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How do scientists use ice to study ancient climates?
A. through glacial deposits and ice cores
B. through glacial deposits and ice ages
C. through ice cores and pollen grains
D. through pollen grains and ice ages
Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?
A. carbon dioxide
B. fluorinated gas
C. nitrous oxide
D. methane
Explanation:
the first question's answer is a
the second question's answer is c
If an electrolytic cell contains a mixture of species that can be oxidized, how do you determine which species will actually be oxidized? If it contains a mixture of species that can be reduced, how do you determine which one will actually be reduced?
By comparing the standard electrode potentials and considering the applied voltage, you can predict which species will undergo oxidation or reduction in an electrolytic cell containing a mixture of species.
In an electrolytic cell that contains a mixture of species that can be oxidized or reduced, the determination of which species will actually undergo oxidation or reduction depends on their respective standard electrode potentials and the applied potential difference (voltage) across the cell.
Oxidation: To determine which species will be oxidized, you compare their standard electrode potentials (E°) or reduction potentials (E°red). The species with the lowest (most negative) standard electrode potential will tend to be oxidized. This is because the species with a more negative standard electrode potential has a greater tendency to lose electrons and undergo oxidation.
Reduction: To determine which species will be reduced, you compare their standard electrode potentials or reduction potentials. The species with the highest (most positive) standard electrode potential will tend to be reduced. This is because the species with a more positive standard electrode potential has a greater tendency to gain electrons and undergo reduction.
It's important to note that the actual conditions in the electrolytic cell, such as the concentration of species and the applied potential difference, can affect the relative tendencies of oxidation and reduction. Therefore, these determinations are based on the standard electrode potentials and may vary under non-standard conditions.
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Which option is a compound?
carbon
O carbon dioxide
O air
O oxygen
Answer:
Carbon dioxide is a compound.
Explanation:
Carbon is the sixth element in the periodic table. Located between boron (B) and nitrogen (N), it is a very stable element. Because it is stable, it can be found both by itself and in many naturally occurring compounds. Scientists describe the three states of carbon as diamond, amorphous, and graphite.
Carbon dioxide (CO2 ) is a chemical compound composed two oxygen atoms covalentl bonded to a single carbon atom. Carbon dioxide: Carbon dioxide is a molecule composed of one carbon atom bonded to two oxygen atoms via two double bonds.
Air is mixture, but not a compound because of the following reasons: Air can be separated into its constituents such as oxygen, nitrogen, etc. by fractional distillation of liquid air. Air shows the properties of all gases present in it.
Oxygen in the atmosphere is a molecule because it contains molecular bonds. It is not a compound because it is made from atoms of only one element - oxygen. This type of molecule is called a diatomic molecule, a molecule made from two atoms of the same type.
Answer:
Its Carbon Dioxide
If 21.2260 mL of 906.6430 mM H2SO4 reacts completely with FeCl3, how many grams of Fe2(SO4)3 are formed
Approximately 7.598 grams of Fe2(SO4)3 are formed when 21.2260 mL of 906.6430 mM H2SO4 reacts completely with FeCl3.
To determine the number of grams of Fe2(SO4)3 formed, we need to consider the stoichiometry of the reaction between H2SO4 and FeCl3. The balanced equation for the reaction is as follows:
H2SO4 + 2 FeCl3 → Fe2(SO4)3 + 2 HCl
From the equation, we can see that 1 mole of H2SO4 reacts with 2 moles of FeCl3 to produce 1 mole of Fe2(SO4)3.
First, let's calculate the number of moles of H2SO4. We can use the given concentration (906.6430 mM) and the volume (21.2260 mL) to find the moles of H2SO4:
Moles of H2SO4 = Concentration * Volume
Moles of H2SO4 = 906.6430 mM * 21.2260 mL * (1 L / 1000 mL) * (1 mol / 1 L)
Moles of H2SO4 ≈ 0.019 mol
Since the reaction is stoichiometric, the moles of Fe2(SO4)3 formed will be equal to the moles of H2SO4 reacted. Therefore, approximately 0.019 moles of Fe2(SO4)3 are formed.
To calculate the mass of Fe2(SO4)3, we can use its molar mass. Fe2(SO4)3 has a molar mass of 399.88 g/mol.
Mass of Fe2(SO4)3 = Moles of Fe2(SO4)3 * Molar mass of Fe2(SO4)3
Mass of Fe2(SO4)3 ≈ 0.019 mol * 399.88 g/mol
Mass of Fe2(SO4)3 ≈ 7.598 g
Therefore, approximately 7.598 grams of Fe2(SO4)3 are formed when 21.2260 mL of 906.6430 mM H2SO4 reacts completely with FeCl3.
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A student fills a flask with 5.0 moles of nitrogen gas and then seals the flask. Which change will
happen when the student warms the flask?
Warming the flask containing 5.0 moles of nitrogen gas will result in an increase in pressure inside the flask due to an increase in the number of collisions between the nitrogen molecules and the walls of the flask.
When the student warms the flask containing 5.0 moles of nitrogen gas, the temperature inside the flask will increase. Due to the increase in temperature, the kinetic energy of the nitrogen molecules will also increase, causing them to move faster and collide more frequently with each other and the walls of the flask. As a result of these collisions, the pressure inside the flask will increase, leading to a possible expansion of the flask.
However, since the flask is sealed, the expansion is restricted, leading to a further increase in pressure inside the flask. The pressure inside the flask will continue to increase until the number of collisions with the walls of the flask balances out the pressure increase due to the increase in temperature.
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Mark the statements which are correct. (Select all that apply. )
1 g = 10^3 mg
10^-3 g = 10^12 ng
1 s = 10^6 μs
1 km = 10^5 mm
1 s = 10^3 ms
All statements given in the question are incorrect except for 1 statement. The correct statement is:1 s = 10^3 ms.
In the question, we have been provided with 5 statements. We are asked to select all the correct statements from those 5 statements. Given below are for each statement:1 g = 10^3 mg:This is incorrect. 1 g is equal to 1000 mg.10^-3 g = 10^12 ng:This is incorrect. 10^-3 g is equal to 1 mg.1 km = 10^5 mm:This is incorrect. 1 km is equal to 1,000,000 mm.1 s = 10^6 μs:This is incorrect. 1 s is equal to 1,000,000 μs.1 s = 10^3 ms:This is correct. 1 s is equal to 1000 ms.Therefore, the main answer to this question is that only 1 statement is correct, which is:1 s = 10^3 ms.
Metric units are based on the power of ten. The base units of the International System of Units (SI) are the meter, kilogram, second, kelvin, ampere, mole, and candela. All other metric units can be derived from these basic units.The first unit in each conversion is in grams, seconds, or kilometers. The metric units for millimeters, microseconds, and nanograms are derived from these basic units. One gram is equal to 1000 milligrams (mg), 1 second is equal to 1000 milliseconds (ms), and 1 kilometer is equal to 1000000 millimeters (mm). 10^-3 g is equal to 1 milligram (mg), 10^6 μs is equal to 1 second (s), and 10^12 ng is equal to 1 gram (g).
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how much salicylic acid is required to produce 0.650 g of aspirin, assuming acetic anhydride is present in excess?
To produce 0.650 g of aspirin, approximately 0.824 g of salicylic acid is required, assuming acetic anhydride is present in excess.
The molar mass of salicylic acid is 138.12 g/mol, and the molar mass of aspirin (acetylsalicylic acid) is 180.16 g/mol. To determine the amount of salicylic acid needed to produce 0.650 g of aspirin, we can use the stoichiometry of the reaction.
The balanced chemical equation for the synthesis of aspirin from salicylic acid and acetic anhydride is:
C₇H₆O₃ + C₄H₆O₃ → C₉H₈O₄ + CH₃COOH
From the equation, we can see that one mole of salicylic acid (C₇H₆O₃) reacts with one mole of acetic anhydride (C₄H₆O₃) to produce one mole of aspirin (C₉H₈O₄) and one mole of acetic acid (CH₃COOH).
First, we calculate the number of moles of aspirin:
moles of aspirin = mass of aspirin / molar mass of aspirin
moles of aspirin = 0.650 g / 180.16 g/mol ≈ 0.00361 mol
Since the molar ratio between salicylic acid and aspirin is 1:1, the number of moles of salicylic acid required is also 0.00361 mol.
Finally, we calculate the mass of salicylic acid:
mass of salicylic acid = moles of salicylic acid × molar mass of salicylic acid
mass of salicylic acid = 0.00361 mol × 138.12 g/mol ≈ 0.824 g
Therefore, approximately 0.824 g of salicylic acid is required to produce 0.650 g of aspirin, assuming acetic anhydride is present in excess.
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Which describes the law of conservation of matter?
O A. Chemical reactions cannot happen.
B. Atoms cannot be created or destroyed in a reaction.
OC. Atoms are not involved in chemical reactions.
OD. Molecules cannot change into other molecules during a reaction.
SUBMIT
Answer:
answer is B
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9.Magnetization of iron is a physical change.
A true
B false
Answer:
This is true.
Explanation:
Magnetization of iron is a physical change and not a chemical change as there is no change of state, no change of temperature, no smell and no evolution of gas.
A(n) ______________ is an organism that lives on another organism and causes harm to that organism
Answer: The answer is Parasite ma dude
Explanation:
In evolutionary ecology, parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
Hopes this helps
Answer:
The answer of tis fill inthe blanks is tape worm because they suck the blood of their host its other example are liver fluje
A reaction that releases energy is called endothermic .
True or False
Answer: False
Explanation: Endothermic means it absorbs heat energy.
Now identify the element oxidized and the element reduced.
which element is oxidized?
which element is reduced?
which elements undergo no oxidation or reduction?
Oxidation and reduction are chemical processes that involve the transfer of electrons between atoms or molecules. Oxidation is the loss of electrons, while reduction is the gain of electrons. In a redox reaction, one substance is oxidized and another substance is reduced. To identify the element oxidized and the element reduced, we can use the following steps:
- Assign oxidation numbers to each element in the reactants and products. Oxidation numbers are imaginary charges that indicate how many electrons an atom has gained or lost compared to its neutral state. Some rules for assigning oxidation numbers are: - The oxidation number of a free element is zero. - The oxidation number of a monatomic ion is equal to its charge. - The oxidation number of oxygen in most compounds is -2, except in peroxides where it is -1. - The oxidation number of hydrogen in most compounds is +1, except in metal hydrides where it is -1. - The sum of the oxidation numbers of all atoms in a neutral compound is zero. - The sum of the oxidation numbers of all atoms in a polyatomic ion is equal to its charge.- Compare the oxidation numbers of each element in the reactants and products. If the oxidation number of an element increases, it means that it has lost electrons and has been oxidized. If the oxidation number of an element decreases, it means that it has gained electrons and has been reduced.
- Identify which element is oxidized and which element is reduced by looking at the change in their oxidation numbers.For example, consider the following redox reaction:
Zn + CuSO4 -> ZnSO4 + CuTo identify the element oxidized and the element reduced, we can follow these steps:
- Assign oxidation numbers to each element in the reactants and products. - Zn: 0 in Zn, +2 in ZnSO4 - Cu: +2 in CuSO4, 0 in Cu - S: +6 in CuSO4 and ZnSO4 - O: -2 in CuSO4 and ZnSO4- Compare the oxidation numbers of each element in the reactants and products.
- Zn: 0 -> +2 (increases by 2) - Cu: +2 -> 0 (decreases by 2) - S: +6 -> +6 (no change) - O: -2 -> -2 (no change)- Identify which element is oxidized and which element is reduced by looking at the change in their oxidation numbers.
- Zn: oxidized (loses 2 electrons) - Cu: reduced (gains 2 electrons) - S: no oxidation or reduction - O: no oxidation or reductionAbout OxidizedOxidized is a reaction that has an increase in oxidation number and a decrease in electrons. It can be said that oxidation is a reaction in which a substance binds oxygen.
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If ℓ= 2, what can you deduce about n?
When ℓ=2, we can deduce the possible value for n is 3.
In quantum mechanics, the principal quantum number (n) represents the energy level of an electron in an atom. The allowed values of n are positive integers (1, 2, 3, ...) that determine the size and energy of the electron's orbital.
The angular momentum quantum number (l) represents the shape of the electron's orbital and can take integer values from 0 to n-1. For example, if n=3, the possible values of l are 0, 1, and 2.
When l=2, this means that the electron is in an orbital with a d-shaped geometry. Since l can only take integer values from 0 to n-1, this means that n must be greater than or equal to 3. Therefore, the electron is in an energy level that is equal to or greater than the third energy level.
If ℓ=2, it means that the orbital angular momentum quantum number is 2. The possible values for the principal quantum number (n) can be determined using the following equation:
n = ℓ + 1
Since ℓ=2, we can substitute it into the equation to get:
n = 2 + 1 = 3
Therefore, when ℓ=2, the possible value for n is 3
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Everything in the world is made of matter except you??
TrueFalse
Answer:
False.
Explanation:
Humans are made of matter too :)
What do you expect to see in a test tube when several drops of two aqueous solutions are mixed, and an insoluble precipitate is formed?.
A foggy appearance is what we might anticipate when we combine a few drops of two aqueous solutions and an insoluble precipitate forms.
Precipitation reactions are those that occur during chemical reactions when a certain amount of two solutions are combined and a solid form of residue forms beneath the liquid. The insoluble salts separate to create precipitate in a double displacement reaction between two distinct solutions. Copper hydroxide, for instance, produces a pale blue precipitate when reacting with sodium hydroxide and copper sulphate.Cu(OH)2 (s) + Na2SO4 (aq) + 2NaOH(aq) + CuSO4(aq) pale blue pptAs a result, the solution appears hazy due to these insoluble precipitates. Mostly colored or white, they are.To learn more about insoluble precipitate refer to:
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the rgba and hsla colors that are available with css3 let you specify
CSS3 introduces a new type of color notation, the rgba and hsla values. The rgba value stands for 'red, green, blue, alpha' and specifies a color with an alpha channel which is used to control the opacity of the color.
The hsla value stands for 'hue, saturation, lightness, alpha' and allows you to specify a color in terms of its hue, saturation, lightness and alpha. Using these two color notation types, you can create more vibrant, visually captivating web designs.
You can also create color gradients and transparencies which were difficult to achieve before. With rgba and hsla, you can easily mix and match colors to create the exact design you have in mind. They provide an excellent way to customize the look and feel of a website and make it truly unique.
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P4 (s) + Cl2 (g) → 4PCl3 (l)
How many mL of 3,0 M HNO₂ can be completely
neutralized by 75 mL of 1.5 M Mg(OH)2 solution?
Answer: approximately 18.75 mL of 3.0 M HNO₂ solution can be completely neutralized by 75 mL of 1.5 M Mg(OH)₂ solution.
Explanation:
To determine the volume of 3.0 M HNO₂ solution that can be neutralized by 75 mL of 1.5 M Mg(OH)₂ solution, we can set up an equation based on the stoichiometry of the balanced chemical equation.
The balanced chemical equation for the neutralization reaction between HNO₂ and Mg(OH)₂ is:
2 HNO₂ + Mg(OH)₂ → Mg(NO₂)₂ + 2 H₂O
From the equation, we can see that it takes two moles of HNO₂ to react with one mole of Mg(OH)₂.
First, let's calculate the number of moles of Mg(OH)₂ present in 75 mL of 1.5 M solution:
Number of moles of Mg(OH)₂ = Volume (in L) × Concentration (in mol/L)
= 75 mL × (1 L / 1000 mL) × 1.5 mol/L
= 0.1125 mol
Since the stoichiometry ratio is 2:1 (HNO₂:Mg(OH)₂), we can conclude that 0.1125 moles of Mg(OH)₂ can neutralize 0.1125/2 = 0.05625 moles of HNO₂.
Now, let's determine the volume of 3.0 M HNO₂ required to contain 0.05625 moles:
Volume (in L) = Number of moles / Concentration (in mol/L)
= 0.05625 mol / 3.0 mol/L
≈ 0.01875 L
Finally, we convert the volume from liters to milliliters:
Volume (in mL) = Volume (in L) × 1000
≈ 0.01875 L × 1000
≈ 18.75 mL
During the winter in grassland ecosystems, rabbits and ground hogs both hibernate in holes. Due to an extremely wet summer much of the ground cannot be used for winter hibernation burrows. This causes an increase in competition between rabbits and ground hogs. Explain a structural and a behavior adaptation that the rabbits could adapt to deal with these new pressures.
Explanation:
They have to battle them dang hogs and get them burrows before them.
Why is methane, CHA, a nonpolar compound?
It can be inferred that due to the relatively slight difference in electronegativity between carbon and hydrogen, and because of its symmetrical tetrahedral shape, methane CH4 is a nonpolar molecule.
What is Methane?Methane is a colorless, odorless gas that occurs naturally in large quantities and is also a byproduct of some human activities. Methane is the most basic hydrocarbon in the paraffin family and one of the most potent greenhouse gases. It has the molecular formula CH4.
Methane is the second most prevalent anthropogenic GHG after CO2, accounting for approximately 20% of world emissions. Compared to carbon dioxide, methane traps heat in the atmosphere 25 times more effectively.
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Justify electrochemical methods depends upon electrochemical cells?
Answer:
I found this!
Electrochemical methods depend upon electrochemical cells because they involve the conversion of chemical energy into electrical energy, or vice versa. An electrochemical cell consists of two electrodes, one of which is the anode and the other is the cathode, which are separated by an electrolyte. The anode and cathode are connected by an external circuit, allowing electrical current to flow through the cell.
In an electrochemical method, a chemical reaction occurs at the electrodes, and the electrons involved in that reaction flow through the external circuit. This flow of electrons generates an electrical current, which can be measured and used to determine the amount of a substance present in a sample. Additionally, by applying an external voltage to the cell, chemical reactions can be forced to occur, and this is the basis of electro-synthesis, the production of chemical compounds.
In summary, electrochemical methods rely on the use of electrochemical cells because they allow for the conversion of chemical energy into electrical energy, and this electrical energy can be measured and used to determine the amount of a substance present in a sample or to generate chemical compounds.
Explanation:
Electrochemical methods depend upon electrochemical cells because they involve the conversion of chemical energy into electrical energy, or vice versa.
What is an electrochemical cell?An electrochemical cell consists of two electrodes, one of which is the anode and the other is the cathode, which are separated by an electrolyte. The anode and cathode are connected by an external circuit, allowing electrical current to flow through the cell.
In an electrochemical method, a chemical reaction occurs at the electrodes, and the electrons involved in that reaction flow through the external circuit. This flow of electrons generates an electrical current, which can be measured and used to determine the amount of a substance present in a sample.
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Un compuesto contiene un peso de 40% de carbono, 6.7% de hidrógeno y 53.3% de oxígeno una muestra de 0.10 moles de este compuesto pesa 6.0g la formula molecular del compuesto es
Answer:
\(C_2H_4O_2\)
Explanation:
¡Hola!
En este caso, dado que conocemos la composición porcentual del compuesto, es posible primero obtener la formula empírica al asumir que dichos porcentajes son gramos, que se vuelven moles con las masas atómicas de carbono, hidrógeno y oxígeno respectivamente:
\(n_C=40gC*\frac{1molC}{12.01 gC}=3.33molC \\\\n_H=6.7gH*\frac{1molH}{1.01gC}=6.6molH\\\\n_O=53.3gO*\frac{1molO}{16.00gO}=3.33molO\)
De este modo, ahora obtenemos las relaciones molares entre ellos, con el fin de obtener los subíndices en la fórmula empírica:
\(C:\frac{3.33}{3.33}=1\\\\ H:\frac{6.6}{3.33}=2\\\\O:\frac{3.33}{3.33}=1\)
Por consiguiente, la fórmula empírica es:
\(CH_2O\)
Finalmente, dado que la masa molar del compuesto es 6.0/0.10=60g/mol (dada la masa y las moles), es posible notar que como la masa molar de la fórmula empírica es 30; esta es dos veces la molecular, por lo que esta ultima resulta:
\(C_2H_4O_2\)
¡Saludos!
For 1 dish of potato wedges, you will need 5 potatoes , 2tbs pepper, and energy. You need to make 80 batches of potato wedges. How many potatoes do you need? Do you have enough?
Answer: you will need 400 potatoes
Explanation:
This type of confined space is used for many purposes, including the storage of water and chemicals. This is called ______
This type of confined space is called a tank.
A tank is a large container or vessel that is designed to hold and store various substances, including water and chemicals. Tanks are used in a wide range of industries and applications, such as industrial processes, agriculture, manufacturing, and water treatment.
Tanks can come in various sizes, shapes, and materials depending on the specific purpose and requirements. They can be made of materials like steel, fiberglass, concrete, or polyethylene, and are designed to be structurally sound and resistant to corrosion or leaks.
The storage of water in tanks is common for purposes such as drinking water supply, irrigation, firefighting reserves, or water storage for industrial processes. Chemical storage tanks, on the other hand, are used to store and handle different types of chemicals, including hazardous substances. These tanks are often designed with specific safety features to ensure the containment and proper handling of the stored chemicals.
Confined spaces like tanks require careful management and adherence to safety protocols due to potential risks associated with their use. These risks may include the presence of toxic gases, lack of oxygen, potential for explosions or fires, and the possibility of engulfment or entrapment. Proper ventilation, monitoring, and safety equipment are essential to ensure the safe operation and maintenance of tanks.
It's important to note that when working with tanks or any confined spaces, it is necessary to follow safety guidelines and regulations to protect the health and well-being of individuals and to prevent environmental hazards.
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Two compounds of phosphorus and fluorine have the following
mass ratios.
Compound 1: 10.14 g fluorine for every 3.38 g phosphorus
Compound 2: 8.42 g fluorine for every 4.21 g phosphorus
Find the whole number ratio of masses of fluorine in compound
1 to compound 2.
Help me please
Answer: 3:2
Explanation: (10.14÷3.38)÷(8.42÷4.21)=1.5=3/2
how many grams of iron are needed to react to 10 moles of oxygen
CaF2+H2SO4—>2HF+CaSO4
In one experiment 42.0g of CaF2 was treated with 94.5g H2SO4 and 14.2g of HF was obtained in the lab
1. what is the limiting reagent
2. how much excess reagent was left over
3. calculate the theoretical yield of CaSO4
4. calculate the percent yield of HF
please answer and explain each question
1.) H2SO4 is the limiting reagent ; 2.) Excess H2SO4 = 41.66 g ; 3.) Theoretical yield of CaSO4 is 73.40 g. ; 4.) Percent yield of HF is 74.4%.
What is limiting reagent?Reactant that is totally consumed when chemical reaction is completed is called limiting reagent.
1.) Moles of CaF2 = 42.0 g / 78.07 g/mol = 0.5386 mol
Moles of H2SO4 = 94.5 g / 98.08 g/mol = 0.9637 mol
Using the stoichiometric ratios, 0.5386 moles of CaF2 would produce 2 x 0.5386 = 1.0772 moles of HF, while 0.9637 moles of H2SO4 would produce only 0.9637 moles of HF. Therefore, H2SO4 is the limiting reagent.
2.) 0.9637 moles H2SO4 x (1 mole CaF2 / 1 mole H2SO4) = 0.9637 moles CaF2
This means that only 0.5386 moles of CaF2 was actually consumed in the reaction. Therefore, 0.9637 - 0.5386 = 0.4251 moles of H2SO4 was left over.
Excess H2SO4 = 0.4251 mol x 98.08 g/mol = 41.66 g
3.) Moles of CaSO4 produced = Moles of CaF2 consumed = 0.5386 mol
Mass of CaSO4 produced = 0.5386 mol x 136.14 g/mol = 73.40 g
Therefore, the theoretical yield of CaSO4 is 73.40 g.
4.) As percent yield = (Actual yield /Theoretical yield) x100
Percent yield = (14.2 g / (0.9637 mol x 20.01 g/mol)) x 100 = 74.4%
Therefore, the percent yield of HF is 74.4%.
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What is the density of a solid with dimensions of 2.36 mm by 3.68 cm by 3.30 cm if has a mass of
2940 mg? Answer in g/cm^3
Explanation:
density = mass ÷ volume
= 2.940 g ÷ (3.68 × 3.30 × 3.6) cm³
= 0.067 g/cm³
since volume is the product of the dimensions;
1000 mg = 1 g;
10 mm = 1 cm
How does an emerging idea differ from scientific consensus? Which best describes emerging scientific ideas?
Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.
Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.
They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.
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state two differences between physical change and chemical change
Answer:
See explanation
Explanation:
1) Physical change is usually reversible, while chemical change isn't
2) Chemical change involves the change of chemical composition of matter while physical change doesn't
Answer:
1. Physical changes only change the physical attributes of a substance, such as color or state, while chemical changes affect chemical composition.
2. In physical changes, no new energy or substances are produced.
Explanation: