Which mixture will not yield hydrogen gas?
(a) sodium and water
(b) calcium and water
(c) zinc and hydrochloric acid
(d) zinc and concentrated nitric acid
(e) steam and red hot iron

You are performing an experiment in a lab to attempt a new method of producing pure elements from compounds. the only problem is that you do not know what element will form. by your previous calculations you know that you will have 6.3 moles of product. when it is complete, you weigh it and determine you have 604.4 grams. what element have you produced?

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

All of the following are part of the biosphere except