What is the reaction called between zinc and hydrochloric acid? what is the reaction called between acetic acid and sodium bicarbonate?

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Water is called the universal solvent because more substances dissolve in water than in any other chemical. this has to do with the polarity of each water molecule. the hydrogen side of each water (h2o) molecule carries a slight positive electric charge, while the oxygen side carries a slight negative electric charge.

All chemical reactions use reactants in a specific proportion or stoichiometry to form products. the reactant regulates the amount of products produced. a) excess b) limiting c) proportional d) stoichiometric