Question

2.) An experiment calls for 25.0 g of ethanol. If the density (at 20 C) is 0.790 g*mL-1, how many liters of ethanol would be required?
A) 0.0198L B) 0.0316L C) 19.8L D) 31.6L

6) Which compound exhibits predominately covalent bonding?

A) NaF B) SO2 C) MgO D) KI

22) Which change will shift the equilibrium of this endothermic reaction to the right? N2O4(g) <--> 2NO2(g)

A) adding a catalyst B) increasing the volume C) decreasing the temperature D) removing N2O4

48) Given that the reaction of sodium with water is exothermic, which statement must be true?

A) Heat is transferred to the surroundings during the reaction B) Heat is not exchanged with the surroundings C) Heat is absorbed from the surroundings D) A catalyst is being used

33.) Which represents an acid solution at 25 C?

A) pH=7 B) pH=3 C) [OH-] = 1.8 *10^-7M D)[H3O+] = 6.7 * 10^-8M