Water is composed of two atoms of and one of oxygen. question 2 options: carbon silicon nitrogen hydrogen

Seawater contains approximately 3.5%nacl by mass and has a density of 1.02 g/ml. what volume of seawater contains 7.5 g of sodium?

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.

If two objects at different te,peraure are in contact with each other what happens to their temperature