Which of the following represents a hydrogen displacement reaction? Group of answer choices 2Al(s) + 3H 2SO 4(aq) → Al 2(SO 4) 3(aq) + 3H 2(g) 2C 2H 6(g) + 7O 2(g) → 4CO 2(g) + 6H 2O(l) 2KBr(aq) + Cl2(g) → 2KCl(aq) + Br2(l) CaBr2(aq) + H2SO4(aq) → CaSO4(s) + 2HBr(g) N 2(g) + 3H 2(g) → 2NH 3(g)

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?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.