A chemist pumps hydrogen gas (H2) from a tank into a reaction vessel containing 0.734 mol O2.
The gases react to form water. If all of the
available O2 reacts, how many moles of H2 are
used?
0 0.367 mol H2
0.734 mol H2
1.47 mol H2

answer: at room temperature (roughly 20 degrees c), you can dissolve 203.9 grams (or 200 grams) of sugar in 100 ml of water. as water temperature increases, the amount of sugar that will dissolve increases, up to about 500 grams of sugar in 100 ml water at 100 degrees c.

explanation:

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fe 55.85 g/mol and h2o 18.02 g/mol.