What is the volume occupied by 30.00 grams of pure gold?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

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.

How does climate change cause the ocean's thermohaline current to slow down?