Convert 5.0 x 1027 r. p. of copper to moles of copper.

How many moles of air are there in a human lung with a volume of 2.4 L at STP? Explain your answer

What is electron configuration of sulfer?

What is sodium bicarbonate an example of? a buffer an acid a liquid a base

Write the following measurement out of scientific notation. 1.80 x 10^11 cm.

If 980kJ of energy as heat are transferred to 6.2L of water at 291 K what will the final temperature be? The specific heat of water is 4.18 J/g•K. Assume that 1.0 mL of water equals 1.0 g of water.

In the reaction Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq), how many grams of hydrogen gas will be produced from 125.0 milliliters of a 6.0 M HCl in an excess of Mg

An element has an atomic number of 92 and a mass number of 234, how many neutrons are there?

What energy is a quarterback's arm before throwing a pass

Which atom can accommodate an octet of electrons but doesn't necessarily have to?

Heat is an exchange of internal energy from one system to another due to A. a temperature difference between the systems. B. one system being gas and the other being solid. C. the systems having the same temperature. D.