What is the rate of effusion for a gas that has a molar mass twice that of
a gas that effuses at a rate of 3.6 mol/min?

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

The biosphere of the earth is made up of what compound? organic or inorganic?