At 7.0c the volume of a gas is 49 mL at the same pressure it's volume is 74Ml at what temperature

when evaporation occurs, only the amount of solvent decrease, the amount of solute stays the same. Does the solution become more concentrated or more dilute?

A particular sample of air is 2.5% water vapor express the concentration of water vapor in parts per million A. 0.0000025 ppm B. 250 ppm C. 25000 ppm D. 0.025 ppm

When multiplying numbers in scientific notation, what do you do with the exponents?

List two ways that the first ionization and second ionization of an atom are similar

Nano3 dinitrogen oxide, also known as laughing gas, is a sweet-tasting gas used in dentistry. when solid ammonium nitrate is heated, the products are gaseous water and gaseous dinitrogen oxide. write the balanced chemical equation for the reaction.

Genetic evidence supports which of the following explanations for the presence of 13 different finch species on the Galápagos Islands? A.

A living thing that cannot make its own food and must eat other living things for energy

Which best explains why astronauts appear weightless when they are in a space shuttle orbiting Earth? • They are falling toward Earth at the same rate as the space shuttle.

If increase the amplitude how does the velocity change? (No google)

What is the result of multiplying (2.5 * 1010) * (3.5 * 10-7) ? Use the correct number of significant digits.