PLEASE THIS IS URGENT I ONLY HAVE 3 MINSSSS
Water is a polar substance. An unknown covalent solid dissolves in water, we can consider this unknown solid to be ____________.

group of answer choices:
polar

not enough information is given

nonpolar

both polar and nonpolar

Using the ideal gas law, we can determine the pressure of carbon dioxide in the metal cartridge.

By assuming the volume of the tire remains constant, we can calculate the gauge pressure that the carbon dioxide can provide to inflate the tire.

We can use the ideal gas law, which states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the given temperature of 299 K to Kelvin. Then, we can determine the number of moles of carbon dioxide in the cartridge by dividing the mass of carbon dioxide (16.0 g) by its molar mass.

Next, we substitute the values into the ideal gas law equation to solve for the pressure (P) of the carbon dioxide in the cartridge.

To find the gauge pressure, we need to subtract the atmospheric pressure (14.7 psi) from the total pressure calculated using the ideal gas law.

Finally, we assume the volume of the tire remains constant, and we can calculate the gauge pressure by dividing the pressure in the cartridge by the volume of the tire (3.81 L).

The resulting value will indicate the pressure to which the carbon dioxide in the cartridge can inflate the mountain bike tire.

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Answer:

chlorie (Cl)

Explanation:

aluminum is a metal.

potassium is a metal.

calcium is a metal.

But chlorine is a nonmetal.

brainlest??

Answer:

The dependent variable is the chicken weight

Explanation:

The experiment was carried out to determine the relationship between the size of chickens and the food with which they are fed.

However, to determine the size of the chickens, the weight of the chickens were taken

The two different experimental treatment was administered separately to the two groups of experimental units

The independent variables are;

1) The type of treatment administered which could be either;

i) Feeding the chickens with corn

ii) Feeding the chickens with rice

2) The duration for which the treatment was administered

The dependent variables is the weight of the chicken after being subjected to one of the two experimental treatments.

The density of the rock is 2.01 g/mL, which means that it is a relatively dense rock compared to other materials.

To find the density of the rock, we need to use the formula: density = mass/volume. First, we have the mass of the rock which is 85.39 grams. Next, we need to find the volume of the rock. We can do this by subtracting the initial volume of the water in the graduated cylinder (58.12 mL) from the final volume after the rock was added (73.54 mL). This gives us a volume of 15.42 mL.

Now we can plug in the values to the formula: density = 85.39 g/15.42 mL = 2.01 g/mL.

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Answer:

This question is asking to state the hypothesis for the given scientific question. A possible hypothesis will be:

IF an organized binder is used, THEN students will turn in an increased amount of homework/more homework.

Explanation:

A hypothesis in an experiment is a testable explanation to a problem. It is a predictive statement given in order to provide a possible solution to an observed problem or scientific question. A hypothesis must be subject to testing via experimentation in order to determine whether to accept or reject it. It must not be true, instead it is just a possible answer to a problem. Hypothesis is usually written in the OF, THEN format.

In this question, a scientific question states: How does the use of an organized binder affect the amount of homework a student turns in? Based on the explanation above, a hypothesis to this question will be:

IF an organized binder is used, THEN students will turn in more homework.

Answer:

The periodic table can be use to determine the properties of new elements by organi the elements according to their numbers

Explanation:

The periodic table is used to determine the properties of elements by grouping or arranging the chemical elements based on their atomic number (number of protons).

A periodic table can be defined as an organized tabular array of all the chemical elements, which is typically arranged in order of increasing atomic number or number of protons (in rows).

In Science, a periodic table comprises seven (7) rows and eighteen (18) columns.

Generally, all chemical elements are arranged or grouped on the periodic table based on their atomic number (number of protons), so as to achieve the following:

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Answer:

dont know sorry

Explanation:

i dont get it

Answer:

Under the same conditions and assuming ideal gas behavior, both gases should have the same number of moles. This means the higher the molar mass the denser the gas. Water vapor would be less dense than N2 under the same conditions.

Explanation:

Answer:

Because of the existence of isotopes.

Explanation:

Let's look at the simplest atom, hydrogen. The majority of hydrogen atoms are the

1

H

isotope; their nuclei contain the 1 proton, the one positively charged nuclear particle. A few hydrogen nuclei contain the 1 proton (this is of course what defines them as hydrogen atoms), but also 1 neutron in addition, to give the deuterium,

2

H

, isotope; a smaller fraction of hydrogen nuclei contain 2 neutrons, to give the tritium isotope,

3

H

.

\(C_3H_6\)  has a double bond in its carbon skeleton. This is a true statement.

Carbon skeleton refers to the chain of carbon atoms that make up an organic molecule. The presence or absence of double bonds in the carbon skeleton affects the properties of the molecule and how it interacts with other molecules. In \(C_3H_6\), there are three carbon atoms arranged in a linear chain, with each carbon atom forming single covalent bonds with two hydrogen atoms. The remaining valence electrons on each carbon atom form a double bond between the first and second carbon atoms.

This double bond is responsible for the unsaturated nature of the molecule. \(C_3H_6\)is an example of a simple alkene, also known as propene. Its carbon skeleton and double bond make it a versatile molecule that can be used in various applications, including the production of plastics, rubber, and other materials.

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The amount that will be left after 115.2 years, given that you started with 10 grams sample of strontium-90 is 0.625 g

To obtain the amount that will be left after 115.2 years, we shall begin our calculation by obtaining the number of half lives that has passed.

The number of half lives that has passed can be obtained as followed:

n = t / t½

n = 115.2 / 28.8

n = 4

Thus, 4 half lives has passed.

Finally, we shall determine the amount that will be left after 115.2 years. This is illustrated below:

N = N₀ / 2ⁿ

N = 10 / 2⁴

N = 10 / 16

N = 0.625 g

Thus, we can conclude that the amount that will be left after 115.2 years is 0.625 g

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O2- has 10 electrons and is also isoelectronic with neon (Ne).Hence, the species that is isoelectronic with neon (Ne) are N3−, C2−, and O2−.

The species which is isoelectronic with neon (Ne) are N3−, C2− and O2−.Isoelectronic species refer to the species that have the same number of electrons. Anions or cations having the same number of electrons as the neutral atom are also said to be isoelectronic with that atom.Anions are species with a negative charge. When an anion is formed, it gains electrons. As a result, it will have more electrons than the neutral atom. Cations are species with a positive charge. When a cation is formed, it loses electrons. As a result, it will have fewer electrons than the neutral atom. Ne (Neon) has the atomic number 10. Therefore, it has 10 electrons. The atomic number of nitrogen is 7. Nitrogen will have 7 electrons when it becomes a neutral atom. N3- ion is formed by gaining 3 electrons. Therefore, N3- has 10 electrons and is isoelectronic with neon (Ne).The atomic number of carbon is 6. Carbon will have 6 electrons when it becomes a neutral atom. C2- ion is formed by gaining 2 electrons. Therefore, C2- has 8 electrons and is also isoelectronic with neon (Ne).The atomic number of oxygen is 8. Oxygen will have 8 electrons when it becomes a neutral atom. O2- ion is formed by gaining 2 electrons. Therefore, O2- has 10 electrons and is also isoelectronic with neon (Ne).Hence, the species that is isoelectronic with neon (Ne) are N3−, C2−, and O2−.

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Answer:

0.3M

Explanation:

Find the amount concentration of the anion in a 0.100 mol/L solution of Al(CIO3)3.

FOR EVERY MOLE OF Al(CIO3)3., THERE ARE 3 MOLES OF CIO3.

SO IN A 0.00m SOLUTION, THE CONCENTRATION OF THE ANION

ClO3 IS 3X0.1M = 0.3M

.

Answer:

Its the second one.

Explanation:

I just looked it because it didnt make sense at first.

a). Thus, the density of the unknown fluid is 720 kg/m³. b).  So, the water layer is at the bottom and the unknown fluid layer is on top in the container. are the answers

Given data Absolute pressure at the bottom of the container of fluid = 140kPa

Depth of the water layer = 20 cm

Depth of the unknown fluid layer = 30 cm

a) Density of the unknown fluid

Let the density of the unknown fluid be ρ2 Formula used

Pressure = Density × gravity × height + Atmospheric pressure

At the bottom of the

container Pressure = Density × gravity × height + Atmospheric pressure

140 kPa = ρ1 × 9.8 m/s² × (0.2 + 0.3) m + atmospheric pressure

Also, Density of water = 1000 kg/m³

We need to find the density of the unknown fluid i.e. ρ2

Thus, the density of the unknown fluid is 720 kg/m³

b) Layer which is on top in the container

Water is denser than the unknown fluid

So, the water layer is at the bottom and the unknown fluid layer is on top in the container.

Hence, option (C) is correct.

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a) The density of the unknown fluid is 478.48 kg/m³.

b) The layer of the unknown fluid is on top of the container.

Given that the absolute pressure at the bottom of a container of fluid is 140 kPa. One layer of fluid is clearly water with a depth of 20 cm. The other mysterious fluid though has a depth of 30 cm. We need to find out the density of the unknown fluid and also identify which layer is on top of the container.

We know that the pressure at the bottom of a container of fluid is given by the formula:

P = hρg

Where,

P is the absolute pressure

h is the depth

ρ is the density

g is the acceleration due to gravity

Substituting the given values in the formula, for water,

P = hρg

140 × 10³ = 20 × ρ × 9.81

ρ = 716.92 kg/m³

Similarly for the other fluid,

P = hρg

140 × 10³ = 30 × ρ × 9.81

ρ = 478.48 kg/m³

Therefore, the density of the unknown fluid is 478.48 kg/m³.

Now, to identify the layer that is on top in the container, we need to compare the densities of the two layers. The layer with the lower density will be on top. Here, we can see that the density of water (which is 716.92 kg/m³) is greater than the density of the unknown fluid (which is 478.48 kg/m³). Therefore, the layer of the unknown fluid is on top of the container.

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The average soil resistivity near the substation is approximately 5.612 Ω·m.

To calculate the average soil resistivity near the substation, we can use the Wenner four poles equal method and the given soil resistance readings.

The formula for calculating soil resistivity using the Wenner method is:

ρ = (π * spacing * sum of resistance) / (2 * π * probe length)

Where:

ρ = Soil Resistivity

spacing = Distance between the current electrodes (m)

sum of resistance = Sum of the measured soil resistance values (Ω)

probe length = Length of the probe (m)

In this case, the probe distance intervals are 1, 2, 3, 4, and 5 m, and the corresponding soil resistance values are 16.4, 5.29, 3.05, 1.96, and 1.36 Ω, respectively.

Let's calculate the average soil resistivity:

spacing = 1 m (since the distance between the current electrodes is not mentioned, we assume it to be 1 m)

sum of resistance = 16.4 + 5.29 + 3.05 + 1.96 + 1.36 = 28.06 Ω

probe length = 5 m (as given in the intervals)

Using the formula, we have:

ρ = (π * spacing * sum of resistance) / (2 * π * probe length)

= (π * 1 * 28.06) / (2 * π * 5)

= 5.612 Ω·m

Therefore, the average soil resistivity near the substation is approximately 5.612 Ω·m.

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The correct equation for the single replacement reaction between bromine (Br2) and calcium iodide (CaI2) can be written as:

Br2 + CaI2 → 2BrI + Ca

In this reaction, bromine (Br2) replaces the iodine (I) in calcium iodide (CaI2), resulting in the formation of bromine iodide (BrI) and calcium (Ca).

To write the balanced equation, we ensure that the number of atoms on both sides of the equation is equal. In this case, we have two iodine atoms on the reactant side, so we need two bromine iodide (BrI) molecules to balance the iodine atoms. The calcium (Ca) atom is already balanced.

Therefore, the balanced equation for the single replacement reaction between bromine and calcium iodide is:

Br2 + CaI2 → 2BrI + Ca

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The electronegativity periodic table is a chart that arranges elements according to their electronegativity, which is a measure of an atom's ability to attract electrons to itself. Electronegativity is a chemical property that reflects the relative tendency of an atom to draw electrons towards itself when it forms a chemical bond with another atom.

The electronegativity values are usually determined using the Pauling scale, which was developed by Linus Pauling and is widely used in chemistry. In this scale, the electronegativity of an element ranges from 0.7 for cesium to 4.0 for fluorine, with increasing electronegativity moving from left to right across a period and increasing as one moves down a group.

The electronegativity values can be useful in understanding chemical bonding and the behavior of molecules. For example, elements with high electronegativity values tend to form ionic bonds, while elements with low electronegativity values tend to form covalent bonds. Additionally, the electronegativity difference between two bonded atoms determines the type of bond, with larger differences indicating polar covalent bonds and smaller differences indicating nonpolar covalent bonds.

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Answer:

P.E = 3.675  J

Explanation:

Given data:

Height of table = 0.75 m

Mass of book = 0.5 kg

Potential energy = ?

Solution:

Formula:

P.E = mgh

g =acceleration due to gravity =  9.8 m/s²

by putting values,

P.E = 0.5 kg× 9.8 m/s² ×0.75 m

P.E  = 3.675 kgm²/s²

J = kgm²/s²

P.E = 3.675  J

Answer:

\(\boxed {\boxed {\sf 3.675 \ Joules}}\)

Explanation:

Gravitational potential energy can be found using the following formula.

\(E_p=m*g*h\)

Where m is the mass, g is the gravitational acceleration, and h is the height.

The mass of the book is 0.5 kilograms. The acceleration due to gravity on Earth is 9.8 m/s². The height of the book is 0.75 meters.

\(m= 0.5 \ kg \\g= 9.8 \ m/s^2 \\h= 0.75 \ m\)

Substitute the values into the formula.

\(E_p=(0.5 \ kg)(9.8 \ m/s^2)(0.75 \ m)\)

Multiply.

\(E_p=(4.9 \ kg*m/s^2)(0.75 \ m)\)

\(E_p=(4.9 \ N)(0.75 \ m)\)

\(E_p=3.675 \ N*m\)

\(E_p=3.675 \ J\)

The book has 3.675 Joules of gravitational potential energy.

The given statement is true. Scientists who use logic to determine whether or not a drug is safe. These researchers are using the classical model of decision making.

A logical and methodical approach to decision-making is the classical model of decision-making. This model proposes that decision-makers gather all relevant data, thoroughly evaluate the alternatives, then select the alternative that maximises their utility or produces the desired result. This model makes the supposition that decision-makers have full knowledge of all available options, are unbiased and logical in their assessment, and make choices free from prejudice or emotional influence. It employs a sequential procedure that involves recognising the issue, specifying the decision criteria, allocating weight to each, producing alternatives, assessing the alternatives, and selecting the best option.

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Answer:

People with a nasal voice can sound as though they're speaking through a clogged-up or runny nose, which are both possible causes. Your speaking voice is created when air leaves your lungs and flows upward through your vocal cords and throat into your mouth. The resulting sound quality is called resonance. (i hope i helped ya )

Explanation:

42.6897 grams of carbon dioxide would be produced from the following reaction, if 175 kJ of energy is given off.

The mole (symbol mol) is the SI base unit of material quantity. The amount of substance in an object or sample is a measure of how many elementary entities of a certain substance are present.

Given chemical reaction is:

\(2CO + O_2\)  → \(2 CO_2\)

From the stoichiometry of the reaction, it is clear that 2 moles of carbon dioxide are produced.

Actual moles will be calculated by using the enthalpy and energy value as:

Actual moles of \(CO_2\) = 275kJ × (\(\frac{2 mol}{566 kJ}\)) = 0.97 moles.

Grams of carbon dioxide = moles  X molar mass of carbon dioxide.

Grams of carbon dioxide = 0.97  X 44.01 g/mol

Grams of carbon dioxide = 42.6897 g

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The drink that contains 2 dashes of bitters, 3/4 oz. of orange juice, 3/4 oz. of dry vermouth, and 3/4 oz. of gin is called a Satan's Whiskers cocktail. It is a classic cocktail known for its balanced flavors and is enjoyed by cocktail enthusiasts around the world.

The drink that contains the given ingredients of 2 dashes of bitters, 3/4 oz. of orange juice, 3/4 oz. of dry vermouth, and 3/4 oz. of gin is known as a "Satan's Whiskers" cocktail. The Satan's Whiskers is a classic cocktail that comes in two variations: straight and curled. The recipe you provided corresponds to the "straight" variation.

To make a Satan's Whiskers cocktail, you will need the following ingredients:

- 2 dashes of bitters (such as Angostura or orange bitters)

- 3/4 oz. of orange juice

- 3/4 oz. of dry vermouth

- 3/4 oz. of gin

To prepare the cocktail, follow these steps:

1. Fill a cocktail shaker with ice.

2. Add 2 dashes of bitters to the shaker.

3. Pour in 3/4 oz. of orange juice.

4. Add 3/4 oz. of dry vermouth.

5. Finally, pour in 3/4 oz. of gin.

6. Shake the ingredients vigorously for about 15 seconds to combine and chill the drink.

7. Strain the mixture into a chilled cocktail glass.

The Satan's Whiskers cocktail is known for its complex and balanced flavors. The bitters add depth and complexity, while the orange juice provides a refreshing citrusy note. The dry vermouth contributes herbal and slightly bitter flavors, and the gin brings a distinct botanical character to the drink. The combination of these ingredients creates a unique and enjoyable cocktail experience.

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Nuclear fission occurs when a nucleus breaks up into two equal fragments that release and separate more atoms. So, the correct option is B.

Nuclear fission is a process in which the nucleus of an atom breaks apart into two or more smaller nuclei. This process releases a significant amount of energy.

This energy is utilized in various applications, including nuclear power generation and nuclear weapons. Nuclear fission reactions are carefully controlled in nuclear power plants to ensure the sustained release of energy without leading to uncontrolled chain reactions. Hence the correct option is B.

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Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals.  The following is an exception to this statement is:

c) Steroids

Large organic molecules, such as proteins, nucleic acids, and carbohydrates, are typically formed through the process of polymerization. Polymerization involves the repetitive bonding of smaller subunits, known as monomers, to form a long chain or polymer. These monomers usually belong to the same class of chemicals, meaning they have similar structures and functional groups.

In the case of DNA, the monomers are nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. The repetitive bonding of nucleotides creates a long chain of DNA.

Similarly, cellulose, a major component of plant cell walls, is composed of repeating units of glucose monomers. The polymerization of glucose molecules forms long cellulose chains.

Contractile proteins, such as actin and myosin found in muscle fibers, are also assembled through the polymerization of monomers. These monomers, called amino acids, are linked together by peptide bonds to form polypeptide chains, which then fold into the functional protein structure.

However, steroids, including molecules like cholesterol, estrogen, and testosterone, are an exception to this general pattern of polymerization. Steroids have a distinct structure consisting of four fused carbon rings. They are not formed through repetitive bonding of identical subunits like proteins or nucleic acids. Instead, steroids are synthesized through specific biosynthetic pathways in living organisms.

While steroids play crucial roles in various physiological processes, they do not follow the typical pattern of polymerization seen in other organic polymers.

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The complete question is:

Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals. which of the following is an exception to this statement?

a) DNA

b) cellulose

c) steroids

d) a contractile protein

Answer:Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. ... Weather tells you what to wear each day. Climate tells you what types of clothes to have in your closet.

Explanation:well bc i am in 10th grade this kinda easy lol hoped i helped

Answer:

Explanation:

Weather is the current state of weather while, climate is the most common weather of that region over a time of 30 years.

Answer:

The ammonia production design process has two design requirements;

Explanation:

In the following process, ammonia is provided by natural gas:

\(H_2 + RSH \to RH + H_2S\\\\H_2S + ZnO \to ZnS + H_2O \ \ (Waste \ water)\\\\CH_4 + H_2O \to CO + 3H_2\\\\CO + H_2O \to CO_2 + H_2\\\\\)

Ammonia would then be generated in a process called also as Haber-Bosch process by responding to produced hydrogen to nitrogen throughout the presence of catalysts.

\(3H_2 + N_2 \to 2NH_3\)

Answer:

Sustainable renewable energy production of hydrogen.

Sustainable use of another thermal ammonia-water process to retrieve ammonia throughout the wastewater.

Explanation: