Can someone find the answer key for this worksheet plz.​

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

Balance the following reaction. as2s3 + 9o2 → 2as2o3 + so2

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 4.20 mol fe and 6.70 mol nio(oh) react?