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nignag [31]
3 years ago
9

How many moles of solute are in a 15 M solution that has a volume of 2 liters?

Chemistry
1 answer:
Gelneren [198K]3 years ago
6 0

Answer:

30 moles of solute

Explanation:

15 M = moles/2 liters

moles = Molarity * Liters

moles = 15 M * 2 Liters

moles = 30

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The boiling point of chloroform is 61.7 C. The enthalapy of vaporization is 31.4 kj/mol. Caculate the entropy of vaporization. D
dedylja [7]

Answer:

Δ S = 93.8 J/mol-K

Explanation:

Given,

Boiling point of chloroform = 61.7 °C

                                             = 273 + 61.7 = 334.7 K.

Enthalapy of vapourization = 31.4 kJ/mol.

Using Gibbs free   energy equation

Δ G = Δ H - T (ΔS)

at equilibrium (when the liquid is boiling), Δ G = 0

so,  0 = ΔH - T (Δ S)

      T (Δ S) = Δ H

and ΔS = ΔH / T

Δ S = (31400 J/mol.) / 334.7 K

Δ S = 93.8 J/mol-K

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3 years ago
Two grams of potassium chloride are completely dissolved in a sample of water in a beaker. This solution is classified as
Eddi Din [679]
The answer is (3) a homogeneous mixture. The difference between homogeneous and heterogeneous mixture is the degree of the mixture being mixed. Due to the completely dissolved and the dissolving ability of KCl, we can get the answer,
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3 years ago
How many cups are in a pound of flour?
Andrej [43]
There are <span>4 1/2 cups of flour in a pound of flour. </span>
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What is the mole ratio of D to A in the generic chemical reaction 3A + B C + 4D
ehidna [41]

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Explanations:- Mole ratio for a chemical reaction is the ratio of the coefficients.

The given generic chemical reaction is:

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Similarly if we want to write the mole ratio of C to D then it is 1:4.

We are asked to write the mole ratio of D to A. So, like the other ratios, the mole ratio of D to A is 4:3 as the coefficient of D is 4 and A is 3.

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