Why does the sky change colors at sunset?

1 because the sun changes colors

2 because the atmosphere reflects colors

3 because long wavelengths are scattered the least

4 because short wavelengths are scattered the least

What collects blood from other heart chambers

Which one of the following statements about absolute zero is correct? (a) At absolute zero, the volume of an ideal gas is zero. (b) At absolute zero, ideal gases freeze to give solids. (c) At absolute zero, solid and liquid water are at equilibrium.

What is the name given for the abbreviation of an ATOM? Select one: The Symbol Atoms An Isotope The Chemical Formula A Molecule

At 488 mm Hg, a sample of nitrogen gas occupies 609 mL. What volume does the gas occupy if the temperature remains constant and the pressure increases to 757.8 mm Hg? Select one: a. 392 b. 607 c. 0.00529 d. 1000

Which one is poisonous gas a. Oxygen b. Carbon monoxide C. Nitrogen

Cobalt fluoride crystallizes in a closest packed array of fluoride ions, with the cobalt ions filling one-half of the octahedral holes. What is the formula of this compound?

When you get into a parked car in the summer time, the metal clip is hot and the seat belt fabric is not. What has a higher specific heat, the metal clip or the seat belt fabric? Think about the definition of specific heat.

A laboratory procedure calls for making 600.0mL of a 1.1M KNO3 solution. How much KNO3 in grams is needed?

How do you make good grades?

What will happen to the pressure inside a rigid container of gas if some of the gas is allowed to escape? (Assuming no change in temperature)