How does the mass of the reactants compare to the mass of products

what pressure in N/m2 would be exerted if a 65 kg person were sitting on a stool with a seat diameter of 12 inches?

The energy required to ionize a mole of potassium ions is 419 kJ/mol. What is the longest wavelength of light capable of this ionization?

Which of the following statements is not true of the phases of a given substance? A. The particles of gases have more kinetic energy than the particles of liquids or solids. B. The particles of a solid vibrate. C.

Minerals with the silicon-oxygen structure shown in Figure 2-1 are classified into what group? A. Sulfates B. oxides C. carbonates D. silicates

If 35.7 kPa of Bromine gas takes up 41.3 L, how much volume will the gas take up at 13.8 kPa

Enter a balanced chemical equation for the combustion of gaseous methanol.

Being able to identify good source of scientific information and apply the knowledge to problems in your life is a part of having A Scientific hypothesis B Scientific inquiry C Scientific literacy D Scientific laws

Hexane and heptane are miscible with each other in all proportions. In making a solution of them, is the entropy of the system increased, decreased, or close to zero, compared to the separate pure liquids? a. The entropy of the system is increased.

Determine the hydronium ion concentration in a solution that is 0.00014 M HCl. Answer in units of M.

Which element in period 2 has the most mass