Which of the following has the highest percent composition of chlorine? sodium chlorate

chlorine gas (C12)

calcium chloride

hydrogen chloride

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled