If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmospheres? Show all of the work used to solve this problem.

2Li (s) + 2H2O (l) - > 2LiOH (aq) + H2 (g)

Which protein is responsible for initial denaturation of oric in e. coli?

What is the ratio of [a-]/[ha] at ph 3.75? the pka of formic acid (methanoic acid, h-cooh) is 3.75?

What is the mole fraction of solute and the molal concentration for an aqueous solution that is 20.0% NaOH by mass?

If solution A has a pH that is four pH units greater than that of solution B, how much greater is the H3O + concentration in solution B than in solution A?

6 A convection current ... a. can form in air or water. b. distributes heat in the oceans. C. often forms a circular pattern. d. All of the above

In the titration between potassium iodate and the sodium thiosulfate solution, if the titration is not performed immediately after the addition of the sulfuric acid, how would this likely affect the calculated concentration of your diluted sodium

Calculate the formula mass of ethanol, c2h5oh. express your answer to three significant figures and include the appropriate units.

When does a substance have a definite shape? a. when the substance is a solid. b. when the substance is a liquid. c. when the substance is a gas. d. when the substance is a plasma.

The area in which sediment is deposited along the shore is the

Write the full ground-state electron configuration for each: (a) S (b) Kr (c) Cs