At constant pressure, 492 mL of a gas at 31.00C is heated and the volume expands to 876mL. What is the new temperature in Kelvin?

A) 171 K

B) 291 K

C) 328 K

D) 541 K

An aqueous solution contains 0.30 M nitrous acid. One Liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) A. 0.31 mol NaNO2 B. 0.074 mol Ca (OH) 2 C. 0.

Calculate the molecular mass of H

How many atoms are there H, SO

For the reaction at equilibrium: 2 NO (g) + O2 (g) = 2 NO2 (g) which change will increase the amount of NO2 (g) ? 1) add NO gas 2) remove NO gas 3) add a catalyst 4) remove O2 gas 5) add NO2 gas

According to ale Chatelier's principle, what happens to the equilibrium constant when the concentration of the reactants is doubled?

Which of the following equilibria would be impacted by a change in pressure? Select the correct answer below: H2 (g) + I2 (g) →2HI (g) NO (g) + O3 (g) →NO2 (g) + O2 (g) 2SO3 (g) →2SO2 (g) + O2 (g) CO (g) + H2O (g) →CO2 (g) + H2

A common stain remover is sold in concentrated form as 3M sodium hypochlorite (NaOCl). You need to create 400 milliliters of a 0.5M solution of sodium hypochlorite to fill a spray bottle. What volume of 3M sodium hypochlorite is needed? 15.0 mL 66.

A chemical reaction that takes in heat is called: exothermic endothermic a phase change

Which of the following lines (of latitude or longitude) would represent by 180 longitude? South Pole Equator Prime meridian North Pole International date line

63Ni decays by a first-order process via the emission of a beta particle. The 63Ni isotope has a half-life of 100. years. How long will it take for 65% of the nickel to undergo decay?