Which of the following elements is an alkali metal?

potassium (K)

calcium (Ca)

chromium (Cr)

germanium (Ge)

How many hydrogen atoms does a water molecule contain? one two three

Heating zinc sulfide in the air causes the formation of

Name the following ionic compounds: Be3P2

For the reaction 6 Li + N2 → 2 Li3N, what is the maximum amount of Li3N (34.8297 g/mol) which could be formed from 14.18 mol (6.941 g/mol) of Li and 16.37 mol of N2 (28.0134 g/mol) ? Answer in units of mol.

What are the five major divisions of chemistry?

Determine the precent composition of the following compounds: a) iron (II) hydroxide b) iron (II) oxide

Copper is plated onto the cathode of an electrolytic cell containing CuCl2 (aq). How long does it take to plate 145 mg of copper with a current of 3.6 A

All of the following require breaking and forming chemical bonds except rusting a nail smashing a rock baking a cake burning wood

Which changes increase the rate of reaction between calcium hydrochloric acid? carbonate and dilute 1 2 3 increasing the concentration of the acid increasing the temperature increasing the size of the pieces of calcium carbonate

In science, what is process text?