How is the AHfusion used to calculate the energy needed to melt a mass of solid?
O A. Grams solid x mol/g < 1/AHfusion

B. Grams solid x mol/g < AHfusion

C. Grams solid x g/mol * A Hfusion

D. Grams solid g/mol < 1/AHfusion

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

Why is the melting of ice a physical change ?

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