Which is the name of c5h12?
n-heptane
n-butane
all of these
n-pentane
n-hexane

Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2