Why could yield be low in EAS exp?

Answer:

dfdfaxc b

Explanation:

The molar solubility of silver sulfate (Ag2SO4) can be determined using the provided options. Given the choices, the correct answer is (C) 1.5 x 10-5.

The molar solubility of silver sulfate (Ag2SO4) is approximately 5.6 x 10^-5 moles per liter (mol/L) at 25°C. This means that at this temperature, 5.6 x 10^-5 moles of Ag2SO4 can dissolve in one liter of water to form a saturated solution. The solubility of Ag2SO4 in water is relatively low, which means that it is considered sparingly soluble. This is due to the high lattice energy of the compound, which arises from the strong electrostatic interactions between the positively charged silver ions (Ag+) and the negatively charged sulfate ions (SO4^2-). The molar solubility of Ag2SO4 can be affected by various factors, including temperature, pH, and the presence of other ions in the solution. For example, increasing the temperature typically increases the solubility of most solids, including Ag2SO4. However, the solubility of Ag2SO4 can also be affected by the presence of other ions that may form insoluble compounds with either the silver ions or the sulfate ions, reducing the amount of Ag2SO4 that can dissolve in solution.

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oxygen has 6 valence electrons and 2 electrons and carbon has 4 electron

Answer:

4!!!!!!!!!!

Explanation:

i got it right

Propane produces more energy as compared to ethanol during burning.

Energy produce by ethanol is 10.45 kilojoules per gram whereas  propane release 46 kilojoules per gram of energy when burn so by comparing these two chemicals we can conclude that propane produces more energy as compared to ethanol during burning.

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Answer:

the basic elements of environment are lithosphere, hydrosphere, atmosphere and biosphere.

Explanation:

Answer:

what are you saying ma guy?

Explanation:

Cobalt (II) Oxide is the systematic name for the formula CoO.

The chemical formula that gives total number of atoms of each element in one molecule of a compound is called Molecular Formula.

Oxidation state is also known as oxidation number. It is defined as the atom is equal to the total number of electrons which have been removed from the element in order to form chemical bond with other atom.

Now find the oxidation state of Co in CoO.

Assume the oxidation state of Co in CoO be x

x + 1 × (-2) = 0

x -2 = 0

x = +2

Oxidation state of Co is +2 or (II)

Thus from the above conclusion we can say that The systematic name for the formula CoO is Cobalt (II) Oxide.

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Answer:

Limitations of Paper Chromatography.

1.Large quantity of sample cannot be applied on paper chromatography.

2.In quantitative analysis paper chromatography is not effective.

3.Complex mixture cannot be separated by paper chromatography.

4.Less Accurate compared to HPLC or HPTLC.

Answer:

Limitations of paper chromatography​ is described below in complete details.

Explanation:

Limitations of Paper Chromatography

Answer:

i have no clue

Explanation:

Answer:

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Explanation:

Taking into account the scientific notation, the result of the sum is 6.6365×10⁵.

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

You want to add two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found.

In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 8.6500×10³= 0.086500×10⁵

Taking the quantities to the same exponent, all you have to do is add what was previously called the number "a". In this case:

0.086500×10⁵ + 6.5500×10⁵= (0.086500+ 6.5500)×10⁵=  6.6365×10⁵

Finally, the result of the sum is 6.6365×10⁵.

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According to the concept of solubility, the pH of saturated solution of calcium hydroxide is 9.

Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.

The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.

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Answer:

The volume of O2 is 7.11L.

Explanation:

1st) It is necessary to balance the chemical reaction:

The reaction is balanced, because there is the same amount of each element in both sides of the reaction.

2nd) From the balanced reaction, we know that from 2 moles of hydrogen peroxide (H2O2), 1 mole of oxygen gas is produced. Now, using the molar mass of hydrogen peroxide (34g/mol), we can calculate the number of moles of O2 that will be produced from 28g of H2O2:

- Conversion from grams to moles:

- Number of moles of O2 produced:

3rd) Finally, we can calculate the volume of O2 using the Ideal Gases formula, replacing the values of pressure (2.0atm), number of moles (0.41moles) and temperature (150°C=423K):

Remember that to use the Ideal Gases formula, the units must be: atm, liter, mol and Kelvin.

So, the volume of O2 is 7.11L.

Answer:

A. 8600 J

General Formulas and Concepts:

Thermochemistry

Specific Heat Formula: q = mcΔT

Explanation:

Step 1: Define

[Given] m = 1600 g

[Given] ΔT = 214 °C - 202 °C = 12 °C

[Given] c = 0.450 J/g °C

[Solve] q

Step 2: Find Heat

Step 3: Check

Follow sig fig rules and round. We are given 2 sig figs as our lowest.

8640 J ≈ 8600 J

Topic: AP Chemistry

Unit: Thermodynamics

Answer:

Butane has only two isomers and pentane has just three, but some hydrocarbons have many more isomers than these. As you increase the number of carbon atoms in a hydrocarbon, the number of isomers quickly increases.

Answer:

\( C_{H_{2}} = 0.07 M \)

\( C_{I_{2}} = 1.07 M \)

\( C_{HI} = 1.86 M \)

Explanation:

The reaction is:

H₂(g) + I₂(g) ⇄ 2HI(g)

Initially, we have the following concentrations of H₂ and I₂:

\( C_{H_{2}} = \frac{n}{V} = \frac{1 mol}{1.00 L} = 1 mol/L \)

\( C_{I_{2}} = \frac{n}{V} = \frac{2 mol}{1.00 L} = 2 mol/L \)

Then, in the equilibrium we have:

H₂(g) + I₂(g) ⇄ 2HI(g)

1-x       2-x         2x

\( Kc = \frac{[HI]^{2}}{[H_{2}][I_{2}]} = \frac{(2x)^{2}}{(1-x)(2-x)} \)

\( 50.5*(1-x)(2-x) - (2x)^{2} = 0 \)

By solving the above equation for x we have:

x₁ = 2.32 and x₂= 0.93

Hence, the concentrations of H₂, I₂ and HI are:

\( C_{H_{2}} = 1-x = 1 - 0.93 M = 0.07 M \)

\( C_{I_{2}} = 2-x =  2 - 0.93 M = 1.07 M \)

\( C_{HI} = 2*x = 2*0.93 M = 1.86 M \)

I hope it helps you!    

Answer:

Soda all start with watered down corn syrup. To get the carbonation companies have different ways of doing this all of which are very different. The last step is to add artificial and natural flavors like lemon and lime, this is also the step in which sugar and preservatives are added.

Explanation:

I hope this answer your question, srry I couldn't go into detail.

Water , H 2 underline O. , has hydrogen bonding (an attractive force) between molecules whereas H_{2}*S , a molecule with a similar size and shape to H 2 underline O,  does not have hydrogen bonding . H₂S would have the lowest boiling point.

A hydrogen bond is an attraction that is predominantly electrostatic between an electronegative atom that is the hydrogen bond acceptor and an electronegative atom that is covalently attached to a greater electronegative "donor" atom or group.

The lowest boiling point is for H2S. The boiling point rises as the intermolecular forces of attraction grow. The main interaction factors that contribute to the rise in boiling point are hydrogen bonding and dispersion forces.

Compared to H2O molecules, H2S molecules participate in weaker hydrogen bonds. This is due to sulphur's weaker electronegativity than oxygen. The hydrogen bonds in H2S can therefore be broken with less energy.

Thus, the boiling point of H2S is lower than that of H2O.

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To solve for the rate of the reaction, we need to use the rate law equation that relates the rate of the reaction to the concentrations of the reactants. For this reaction, the rate law is:

Rate = k [CH3Cl]^x [Cl2]^y

where k is the rate constant, and x and y are the orders of the reaction with respect to CH3Cl and Cl2, respectively.
To determine the values of k, x, and y, we would need additional information such as the experimental data or the reaction mechanism. Without this information, we cannot solve for the rate of the reaction.

Therefore, the answer to your question is that we cannot solve for the rate of the reaction with the given information. We need more information or assumptions about the reaction in order to determine the rate.
To solve for the rate of the reaction between CH3Cl and Cl2, you would need additional information about the rate law for this specific reaction. The rate law is typically given in the form:

Rate = k[CH3Cl]^m[Cl2]^n

Here, k is the rate constant, m and n are the orders of the reaction with respect to CH3Cl and Cl2, respectively, and [CH3Cl] and [Cl2] are their concentrations. Since we only have the concentrations (0.25 M for CH3Cl and 2.25 M for Cl2), we cannot solve for the rate without knowing the values of k, m, and n. Please provide the rate law or additional information to help you solve the rate of the reaction.

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Answer:

Please upload the picture and I can answer

Explanation:

Answering: it is mostly empty space

Explanation:

The number of moles of silicon, Si, if you begin with 5.84 x 1024 atoms of silicon: 9.7 moles, using Avogadro's number.

To calculate the number of moles of silicon, we need to use Avogadro's number, which is the number of atoms or molecules in one mole of a substance. Avogadro's number is approximately 6.022 x 10^23 particles per mole.

First, we need to convert the number of atoms of silicon to moles of silicon. We can use the formula:

moles of silicon = number of atoms of silicon / Avogadro's number

Substituting the given values, we get:

moles of silicon = 5.84 x 10^24 atoms / 6.022 x 10^23 atoms/mol

moles of silicon ≈ 9.7

Therefore, there are approximately 9.7 moles of silicon present.

Explanation: The mole is a unit of measurement used in chemistry to express the amount of a substance. It represents the number of particles in a substance, such as atoms or molecules.

Avogadro's number is the number of particles in one mole of a substance, and it is a constant value. By using this value and the given number of atoms, we can calculate the number of moles of silicon present.

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Answer:

The second one resprents a chemical change because a chemical change is when a new substances is combined with the other substances to form a new substances

Explanation:

The diagram with the orange and grey in the middle plus the orange and white that is what the other substance created.

The La Brea asphalt deposits have been trapping and preserving

organisms  for at least 38,000 years.

The La Brea Tar Pits, located in Los Angeles, California, are a group of tar pits that have been seeping asphalt for thousands of years. The asphalt has trapped and preserved the bones of animals that became stuck in it, as well as the remains of plants and other organic material.

The tar pits have been an important site for the study of Pleistocene era life, and the fossils that have been found there have provided a wealth of information about the animals that lived in the area during that time period. Some of the most commonly found species at the La Brea Tar Pits include saber-toothed cats, dire wolves, mammoths, and mastodons.

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Answer:

Using two coils of wire wrapped around an iron core produces an input voltage and output voltage.

Explanation:

A test tube is heated in a water bath instead of directly over the flame because the water bath provides a more controlled and uniform heating environment, which helps to prevent overheating. Direct heating over the flame can cause uneven heating and may result in cracking or breaking of the test tube.

Test tubes are commonly used in chemistry for conducting various reactions, heating samples, or boiling liquids. When heating a test tube, it is important to ensure that the tube is heated evenly and at a controlled rate to avoid overheating or cracking of the tube.

Heating a test tube directly over a flame can result in uneven heating, as different parts of the test tube may be exposed to different temperatures. Additionally, the intense heat from the flame may cause the test tube to overheat, leading to boiling or cracking of the tube.

A water bath, on the other hand, provides a more controlled heating environment for the test tube. The water in the bath distributes heat more evenly around the tube, allowing for more gradual heating and preventing overheating. The water also helps to maintain a constant temperature, which is important for reactions that require specific temperature ranges.

Furthermore, the water bath also acts as a safety measure, as it provides a barrier between the flame and the test tube, reducing the risk of accidental fires. Overall, heating a test tube in a water bath provides a more controlled and safer heating environment, making it a preferred method for heating test tubes in chemistry.

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When you compare the results of the grease spot test for potato chips, white candle wax, vegetable oil and rubbing alcohol, you will find that all of these substances can be used to remove grease stains from clothes. However, there are some differences in their effectiveness and ease of use.

Potato chips are often used as a quick fix for small grease stains on clothing. You simply place a chip on the stain and press down firmly. The grease from the chip absorbs the grease from the stain, leaving the fabric clean. However, this method is not always effective and may leave a residue on the fabric.

White candle wax can be used to remove grease stains from clothes by melting the wax onto the stain and then peeling it off once it has hardened. This method is effective, but can be time-consuming and messy.

Vegetable oil can be applied to grease stains and left to sit for a few minutes before washing. It is effective at removing the stain, but can be difficult to remove from the fabric.

Rubbing alcohol is a common household cleaner that can be used to remove grease stains. It can be applied directly to the stain and rubbed with a clean cloth. It is effective and easy to use. However, it should be used with caution on delicate fabrics as it can cause damage.

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Answer: B and D

Explanation:

sorry if im wrong

Answer:

partly ionic and partly covalent