How many lead atoms are in a cube of lead that has a volume of 2.18 cm3 if the density of lead is 11.3 g/cm3?

A 6.53 g sample of a mixture of magnesium carbonate and calcium carbonate is treated with excess hydrochloric acid. The resulting reaction produces 1.73 L of carbon dioxide gas at 26 ∘C and 745 torr pressure.

Consider the following statements. A. Molecules of hot water have less kinetic energy than those of cold water. B. For most solids, solubility increases when temperature increases. C.

When you open a solid room air freshener, the solid slowly loses mass and volume. how do you think this happens?

For the reaction A (g) → 2 B (g), K = 14.7 at 298 K. What is the value of Q for this reaction at 298 K when ∆G = - 20.5 kJ/mol?

What is the formula for the conjugate base formed by the following acid HCN

Which energy source produces carbon dioxide? a. plutonium b. uranium c. sunlight d. natural gas

Substance A and B are colorless, odorless liquids that are nonconductors and flammable. The density of substance A is 0.97 g/mL; the density of substance B is 0.89 g/mL. Are A and B the same substance? Explain your answer.

Describe what what food web is.

What are quarks and gluons made of?

If 1. oo mol CS2 reacts with 1.00 mol O2, identify the limiting reactant