Given the balanced equation: Pb(NO3)2 + K2CrO4 > PbCrO4 + 2 KNO3

What number of mols of Pb(NO3)2 is consumed when 5.5 L of KNO3 is produced?

.75 mols

.90 mols

.12 mols

2.5 mols

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate according to the following equation:

How is it possible for someone to put an ear to a wall and hear someone in the next room?     a.sound waves can travel though solids.    b.the waves travel from room to room via air.    c.there must be some air in the wall so the sound can travel through it.    d.sound waves change to electromagnetic waves and then back again.

Which of these describes the rate of this chemical reaction? h2 + cl2 → 2 hcl a. an increase in the concentration of hcl and h2 with time b. an increase in the concentration of hcl with time c. an increase in h2 and cl2 with time d. a decrease in hcl and cl2 with time