Particles are arranged in a crystal structure in a sample of

(1) H2 (g) (3) Ar (g)

(2) Br2 (l) (4) Ag (s)

List the number of each type of atom on the left side of the equation C5H12 (g) + 8O2 (g) →5CO2 (g) + 6H2O (g)

Which best explains why blood and the cytoplasm of cells are mainly composed of liquid water? a. Water is a common substance and is readily available. b. Water is an important transport and reaction medium. c.

Butter has a specific gravity of 0.86. What is the mass of 2.15 L of butter?

All atoms of isotopes of a particular element have the same number of protons, but different numbers of neutrons in their nuclei. True False

Which fact results from the presence of both polar and nonpolar side chains in a protein?

What is the mass in grams of 5.00moles of CH4? How many moles of oxygen gas O2, are present in a 38g sample of O2

25 In general, for a gas at a constant pressure, A the temperature of the gas is inversely proportional to its volume B. the temperature of the gas is inversely proportional to its pressure C.

The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. Calculate the vapor pressure of the solution at 25 °C when 8.054 grams of saccharin, C7H5NO3S (183.

What do microscopic producers supply the atmosphere with?

A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum of this radiation?