The answer to the problem: 3.542 - 2.1 = , written to the correct number of significant digits is:

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

At element makes up all organic compounds?