What temperature units
should be used when
performing calculations using
Charles's Law?

Explanation:

Kelvin is preferred for solving problems related to Charles' Law because , it is the Absolute temperature scale.

To convert Celsius to  Kelvin scale, you add 273 to the temperature in the centigrade/Celsius scale.

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.