Match each temperature.

When methane is burned with oxygen, the products are carbon dioxide and water. If 9 grams of water and 11 grams of carbon dioxide are produced from 16 grams of oxygen, determine how many grams of methane were needed for the reaction.

When methane is burned with oxygen, the products are carbon dioxide and water. If 18 grams of water are produced from 8 grams of methane and 32 grams of oxygen, determine how many grams of carbon dioxide were produced in the reaction.

How many significant digits should be reported in the answer to the following calculation? (4.3 – 3.7) × 12.3 =

Which of these sets of elements are all in the same group?

Which of the following statements about soda pop is FALSE?

The correct multiplier for the prefix femto is:

A popular science demonstration is to take several liquids that will not mix together and “stack” these liquids in a tall glass cylinder. Suppose the following three liquids were placed in the same tall, narrow glass cylinder:  SUBSTANCE DENSITY g/mL vinegar 1.01 motor oil 0.87 corn syrup 1.36 These liquids would stack in which order?

How many grams are in 1.48 × 107 μg?

How much heat (kJ) is needed to raise the temperature of 100.0 grams of water from 25.0°C to 50.0°C?