2. How many moles of hydrogen gas will be produced from mixing 5.00 grams of Zn and 50mL of 2NHCkagi Solution? How many L of gas is produced, assuming it is behaving as an ideal gas at STP?3. Compute for the molarity (M), molality (m) and normality (N) of the following solutions.a. 2.50 grams of CaClz in 800mL of waterb. 5.40 grams of (NH4)2SO4 in 950.0mL of water(Assume that the density of water is 1.00 g/mL)4. What is the osmotic pressure of a solution if 1.50 grams of BaCl2 has been mixed in a 200mL of0.50M solution of BaCl? The temperature of the solution is 45°C.5. What is the vapor pressure lowering of the resulting solution in problem 4 if the vapor pressure of thesolvent is 5.00 atm? Assume that the volume of the solvent is the volume of the solution.6. A student was requested to prepare a 500mL of 0.5N solution of MgS04. The lab teacher required thestudent to change the concentration of the solution by adding 2.50 grams of MgSO4. The boiling pointof water was determined to be 98.5°C while the freezing point was noted at 0.50 °C. What is the finalconcentration of the solution expressed as molality (m) after adding extra MGSO4? What is the boilingpoint and freezing point of the solution?(Use the Ko and Kr values from any reference.)Assume that the volume of the solvent is also the volume of the solution.

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yas will be produced from mixing 5.00 grams of Zn and 50mL of 2N HClagi Solution? How many L of gas is produced, assuming it is behaving as an ideal gas at STP? Comput

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

2. How many moles of hydrogen gas will be produced from mixing 5.00 grams of Zn and 50mL of 2N
HCkagi Solution? How many L of gas is produced, assuming it is behaving as an ideal gas at STP?
3. Compute for the molarity (M), molality (m) and normality (N) of the following solutions.
a. 2.50 grams of CaClz in 800mL of water
b. 5.40 grams of (NH4)2SO4 in 950.0mL of water
(Assume that the density of water is 1.00 g/mL)
4. What is the osmotic pressure of a solution if 1.50 grams of BaCl2 has been mixed in a 200mL of
0.50M solution of BaCl? The temperature of the solution is 45°C.
5. What is the vapor pressure lowering of the resulting solution in problem 4 if the vapor pressure of the
solvent is 5.00 atm? Assume that the volume of the solvent is the volume of the solution.
6. A student was requested to prepare a 500mL of 0.5N solution of MgS04. The lab teacher required the
student to change the concentration of the solution by adding 2.50 grams of MgSO4. The boiling point
of water was determined to be 98.5°C while the freezing point was noted at 0.50 °C. What is the final
concentration of the solution expressed as molality (m) after adding extra MGSO4? What is the boiling
point and freezing point of the solution?
(Use the Ko and Kr values from any reference.)
Assume that the volume of the solvent is also the volume of the solution.

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