A 248.7 mL sample of gas exerts 633.7 mm Hg pressure at 20.1 ºC. What pressure does it exert at 54.4 ºC if the volume expands to 504.4 mL? a.
349

b.
846

c.
184

d.
1190

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d