Approximately how many atoms make up 2.3 moles of gallium?

a. 1.6 * 1021 atoms

b. 3.8 * 1022 atoms

c. 2.3 * 1023 atoms

d. 1.4 * 1024 atoms

A sample of a certain binary compound contains 6.93 g of silicon and 7.89 g of oxygen. What is the percent composition of the compound?

A substance with a different number of neutrons and the same number of protons is called

Write the balanced net ionic equation for a solution formed from CaCl2 (aq) and Na2SO4 (aq)

For heavy elements what is the ratio of neutrons to protons that predicts a stable nucleus?

A relativistic proton has a momentum of 1.0 * 10-19 kg · m/s and a rest energy of 0.15 nJ. What is the kinetic energy of this proton? (c = 3.00 * 108 m/s, mproton = 1.67 * 10-27 kg)

What family is the mineral lead in?

What is a greenhouse gas?

What symbol of xenon would be a part of the noble gas notation for the element?

Why do you think the process to create a protected area takes so long?

Calculate the molarity of a solution prepared using 127 grams of KCI with a volume of 552 mL