Which one of the following is an element?
salt water.
sugar
oxygen
chocolate chip cookies

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.