Which sample is a pure substance?
a a test tube of zinc oxide
b a container of zinc and oxygen
c a flask of pond water
d a jar of soil

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

Phosgene (carbonyl chloride), cocl2, is an extremely toxic gas that is used in manufacturing certain dyes and plastics. phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: co(g) cl2(g)⇌cocl2(g) carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 477 ∘c . at equilibrium, the concentrations were measured and the following results obtained: gas partial pressure (atm) co 0.830 cl2 1.30 cocl2 0.220 what is the equilibrium constant, kp, of this reaction

Distilled water is a completely neutral solution. what is its ph? a. 1 b. 7 c. 14 d. 0