Balance the following reaction. a coefficient of "1" is understood. choose option "blank" for the correct answer if the coefficient is "1."

al + hcl → alcl3 + h2

The balanced equation is:

2Al + 6HCl -> 2AlCl3 + 3H2

There are 2 Al, 6H, and 6 Cl making the equation balanced and if you need the coefficients in order it is: 2,6,2,3

The mass has escaped into a gas which you can not see so the law stays true.

answer: mole of the gas

answer: mole of the gasexplanation:

answer: mole of the gasexplanation: this is because 1 mole of a gas is 22.4dm³, which is use in ideal gas