please help lol- brainlist to whomever- P. S---> Do it all please, and don't get any wrong. Then you get brainiist.

What describes the particles in a liquid

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning