400 ml of hydrogen are collected over water at 18 c and a total pressure of 740 mm of mercury. (vapor pressure of h2o at 18 c=15.5mm).

a) what is the partial pressure of h2o?

b) what is the partial pressure of h2?

The excretory system, need answers for all: )

Acandle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. the wick is usually surrounded by wax. which is the most important property of covalent compounds that makes them useful for making candle wax? a low boiling point a low melting point a high boiling point a high melting point

How is the way a mixture is combined different from how a compound is combined?