CHEMISTRY HIGH SCHOOL

One mole of ice at 0°C is added to two moles of water at 50°C under a constant external pressure of 1 atm. This process is carried out in a thermally insulated vessel, such that no heat can escape the vessel. When equilibrium is reached, all of the ice has melted. Given: Δ H f u s i o n ∘ ( H 2 O a t 0 ∘ C ) = 6.01 k J m o l C p ( H 2 O , l i q u i d ) = 75 J m o l K a) (7 Points) Calculate the final temperature of the mixture (in °C). Show all work to support your answer.

Answers

Answer 1
Answer:

Answer:

T2 = 29.79°C

Explanation:

Equliibrium signifies that heat loss = heat gained

Heat gained by Ice;

H = ML

Mass, M = Number of moles * Molar mass = 1 * 18 = 18g

l = 6.01 k J m o l = 334 J/g

C = 4.186 J/g

H =  18(334)

H = 6012

Heat lost by water

H = MCΔT

H = 18 * 4.186 * (50 - T2)

H = 3767.4 - 75.348T2

Since H = H, we have;

6012 = 3767.4 - 75.348T2

- 75.348T2 = 3767 - 6012

T2 = 2245 / 75.348

T2 = 29.79°C

Related Questions

What is the molality of a solution containing 125 grams of iodine (I2) and 750 grams of CCl4? A. 1.2 m. . B. 6.57 m. . C. 0.657 m. . D. 0.12 m.
Which solution has the highest boiling point at standard pressure?(1) 0.10 M KCl(aq)(2) 0.10 M K2SO4(aq)(3) 0.10 M K3PO4(aq)(4) 0.10 M KNO3(aq)
Which of the following does not describe natural migration?Pls I really need help
A 6.25mg sample of Cr51 decays for 111 days. After that amount of time, 0.75mg remains. What is the half-life of Cr51?
Describe how activity within the earth results in earthquakes

As you ___________the temperature in a reaction the molecules speed up, likewise if you ____________ the temperature the molecules slow down.

Answers

The words that would correctly fill the blanks are increase and decrease, respectively. Temperature is directly related to kinetic energy which characterizes motion in molecules. Therefore, as the temperature goes up, the motion of molecules goes faster and vice versa.

Which of the following is one way to prevent the corrosion of iron? A. Paint exposed iron p21 with protective paint.
B. Protect the iron from polluted air.
C. Add carbon to the iron.
D. Let the iron develop a natural coat of carbonate.

Answers

The best way to prevent the corrosion of iron is to paint the exposed iron with protective paint, because that prevents water from rusting the iron.

How many grams are there in 7.4x10^23 molecules of Na2SO4?

Answers

molar mass Na2SO4 = 142.04 g/mol

142.04 g -------------- 6.02x10²³ atoms
??  g ------------------ 7.4x10²³ atoms

142.04 x ( 7.4x10²³) / 6.02x10²³

=> 174.60 g

The relatively high boiling point of water is due to water havingA) hydrogen bonding
B) metallic bonding
C) nonpolar covalent bonding
D) strong ionic bonding

Answers

The answer is A because water molecules don't have metallic bonding, and water is also polar, and it takes more time for the heat energy to break down the hydrogen bonds 

Which formulas represent compounds that are isomers of each other?H HH-C-H and H C-HH H2 HO-C-H and H C-OHH HH-C-C-C OH and H-C O-C-C-HH HH H HOH HH OH H4 H-C-C-C-H and H C C-HH H

Answers

Answer : The correct option is, (3)

Explanation :

Isomers : It is defined as the molecule that has the same chemical formula but  it has the different structures.

Same chemical formula means that the same number of elements are present in both the compounds.

In option 1,2 and 4, both chemical formula and the structure are different. So, the option 1 compounds are not the isomers of each other.

In option 3, the chemical formula is same but the structure are different. So, the option 3 compounds are the isomers of each other.

Hence, the correct option is, (3)
The answer is number 3

A liquid mixture in which particles can be seen and easily separated by settling or filtration is aa. solution.
b. suspension.
c. solvent.
d. solute.

Answers

The answer for this statement is letter B. suspension. The liquid mixture in which particles can be seen and easily separated by settling or filtration is a  suspension. 

Answer:

suspension

Explanation:
Other Questions
The molar mass of copper(II) chloride (CuCl2) is 134.45 g/mol. How many formula units of CuCl2 are present in 17.6 g of CuCl2? 7.88 × 1022 formula units 1.84 × 1023 formula units 1.91 × 1023 formula units 1.42 × 1024 formula units
Select the sketches that show aqueous solutions of a strong and weak acid.
What isotope has 33 protons and 48 neutrons?
How many moles of silver chloride are produced from 15.0 mol of silver nitrate