A container holds four times as many moles of CO2 as O2. If the total pressure in the container is 20 atm, what is the pressure exerted by carbon dioxide

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is the relation between concentration of reactants and the rate of chemical reaction?

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 5.35 mol fe and 7.65 mol nio(oh) react?