What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?

A.

their number of atoms

B.

their number of molecules

C.

their number of electrons

D.

their number of protons

At which temperature and pressure would a sample of helium behave most like an ideal gas?

True or False: Heterotrophs obtain food molecules for energy and nutrition by eating heterotrophs or by eating and absorbing autotrophs

A 1.00 L flask containing gas A at 5.00 atm is connected to a 4.00 L flask containing gas B at 1.00 atm. When the two gases are allowed to mix at constant temperature, what is the final pressure in the two-flask assemblage?

What is the correct formula of 1,1 dibromoethane

Agar is used to culture bacteria and as a medium in electrophoresis. The agar used in this Petri dish is a by-product of an unlikely organism. Agar is extracted from a (n)

All organic molecules contain carbon and hydrogen. what parts of an organic molecule may contain oxygen, nitrogen, or phosphorus?

Based on Reference Table J. which two reactants react spontaneously? (I) Mg (s) + ZnCl2 (aq) (2) Cu (s) + FeSO4 (aq) (3) Pb (s) + ZnCl2 (aq) (4) Co (s) + NaCl (aq)

Explain the difference between valance electrons and the other electrons

Describe the development of the modern periodic table

How do you tell how many electrons an element wants to gain or lose?