A large balloon is initially filled to a volume of 23.5L at 80 oCand a pressure of 3.39 atm. What volume of gas will the balloon contain at 1.55 atm and -20 oC? Molar mass of the gas is 135.23 g/mol

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

An alkaline battery produces electrical energy according to the following equation. zn(s) + 2 mno2(s) + h2o(l) zn(oh)2(s) + mn2o3(s) (a) determine the limiting reactant if 17.5 g zn and 31.0 g mno2 are used. (type your answer using the format ch4 for ch4.) (b) determine the mass of zn(oh)2 produced. _ g

What human activity increases beach erosion?