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Grace [21]
3 years ago
7

Determine the boiling point of a solution made by dissolving 0.60 mol K2SO4 in 1.0 kg water. Water has a boiling point elevation

constant of 0.51°C•kg/mol. What is the boiling point of this solution?

Chemistry
2 answers:
Semmy [17]3 years ago
8 0

<em>Answer: </em>

1) -65.9

2) 100.31

<em> Explanation: edg 2020</em>

<em></em>

MissTica3 years ago
5 0
To determine the boiling point (bp), you need this formula---> bp solution= bp solvent + Δbp solution

bp solvent is known since we are dealing with water; it is 100C

all we have to do is to solve for Δbp solution and add it to the 100C. 

Δbp solution= Kb x i x m, where Kb is the constant, i is the number of particles and m is molality. 

Kb= 0.51 
i= 3, K2SO4 ----> 2K+ + SO4-2 (the solute breaks into three ions)
m= ? = moles/kg of solvent

molality (m)= 0.60 mol/ 1.0 Kg= 0.60 m

Δbp solution= 0.51 x 3 x 0.60= 0.918 C

bp solution= 100C + 0.918 C= 100.918 C
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5 0
3 years ago
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A 2.0 L container of nitrogen gas had a pressure of 3.2 atm. What volume would be necessary to decrease the pressure to 1.0 atm
beks73 [17]

Answer:

6.4 L

Explanation:

When all other variables are held constant, you can use Boyle's Law to find the missing volume:

P₁V₁ = P₂V₂

In this equation, "P₁" and "V₁" represent the initial pressure and volume. "P₂" and "V₂" represent the final pressure and volume. You can find the theoretical volume by plugging the given values into the equation and simplifying.

P₁ = 3.2 atm                      P₂ = 1.0 atm

V₁ = 2.0 L                          V₂ = ? L

P₁V₁ = P₂V₂                                                    <----- Boyle's Law

(3.2 atm)(2.0 L) = (1.0 atm)V₂                        <----- Insert values

6.4 = (1.0 atm)V₂                                           <----- Simplify left side

6.4 = V₂                                                        <----- Divide both sides by 1.0

6 0
2 years ago
What is the total pressure exerted by a mixture of 48.0 grams of CH4 and 56.0 grams of
Oksi-84 [34.3K]

The pressure of the gas is obtained as 48 atm.

<h3>What is the total pressure?</h3>

Now we know that;

Number of moles of CH4 = 48.0 grams /16 g/mol = 3 moles

Number of moles of H2 =  56.0 grams/2 g/mol = 28 moles

Total number of moles present = 3 moles + 28 moles = 31 moles

Using;

PV =nRT

P = total pressure

V = total volume

n = total number of moles

R = gas constant

T = temperature

P = nRT/V

P = 31 * 0.082 * 286/15

P = 48 atm

Learn more about pressure of a gas:brainly.com/question/18124975

#SPJ1

4 0
1 year ago
? Match the states of matter to their properties. Drag the items on the left to the correct location on the right. solids Indefi
Fantom [35]

Answer:

Solids: definite shape and definite volume (highest density)

Liquid: indefinite shape and definite volume (glide past each other)

Gas: indefinite shape and indefinite volume (lowest density)

Explanation:

look at the answer

8 0
3 years ago
When 0.514 g of biphenyl (c12h10) undergoes comubustion in a bomb calorimeter, the temperature increases from 25.80 °c to 29.40
slava [35]
The  change  in  internal   energy  of the   combustion  of  biphenyl  in  Kj  is  calculated  as follows

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= 5.86 kj/c   x  3.6 c =  21.096  kj


7 0
3 years ago
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