Chemistry Solutions Library

Chemistry Solutions Library

Access over 31,836 Chemistry video and text solutions to help you complete your homework.

Browse Solutions

31,836 solutions

The Ideal Gas Law

Q. How many moles of xenon gas are in a sample occupying 0.500 L at 170 mm Hg and 25°C?(A) 3.48 mol (B) 0.00457 mol(C) 0.00500 mol (D) 3.85 mol (E) 2....

Solved • Nov 29, 2019
Standard Temperature and Pressure

Q. What volume will 0.543 moles of He occupy at STP?(A) 41.3 L (B) 13.3 L (C) 12.2 L (D) 22.4 L (E) 1.11 L

Solved • Nov 29, 2019
Calorimetry

Q. If 100. J of heat energy are added to separate 50.0 g samples of gold (specific heat = 0.129 J g−1 °C−1), silver (specific heat = 0.234 J g−1 °C−1)...

Solved • Nov 29, 2019

Limiting Reagent

Q. Sodium hydroxide reacts with carbon dioxide to yield sodium carbonate and water. What is the limiting reagent when 2.15 mol of sodium hydroxide and...

Solved • Nov 28, 2019

Redox Reactions

Q. Identify the reducing agent in the following reaction:2 MnO−4 + 10 Cl− + 16 H+ → 5 Cl2 + Mn2+ + 8 H2O(A) Cl−(B) MnO−4(C) Cl2(D) Mn2+ (E) H+

Solved • Nov 28, 2019

Percent Yield

Q. Hydrazine, N2H4, is an oily liquid used as a rocket fuel. It can be prepared in water by oxidizing ammonia with hypochlorite ions:2 NH3(g) + ClO−(a...

Solved • Nov 28, 2019
pH and pOH

Q. Calculate the hydronium ion concentration for a solution with a pH of 6.8.(A) 6.3 × 10−8 M (B) 1.6 × 10−7 M (C) 6.8 M (D) 0.83 M (E) 6.3 × 106 M

Solved • Nov 28, 2019