Convert 0.10 g Mg to mols.
Convert mols Mg to mols HCl.
Convert mols HCl to grams HCl.
This will give you grams HCl, however, not volume. The volume HCl can't be calculated unless there is some concentration of HCl given (at least if I read the problem correctly).
2HCl + Mg = H2 + MgCl2
We are given 0.10 grams of Mg
The concentration of Mg = 24g/mol
Using avogadro's law
(V=n/c; v-volume(L),
n-number of moles(mol), c-concentration(g/L))
we have to predict the amount of HCl needed. help !
4 answers
However, you CAN calculate the g HCl/mol given these data which is a concentration unit (in the same sense that 24 g/mol Mg is a concn unit) although I usually don't think of it that way.
how do i convert mols of Mg to HCl, if the grams of HCl aren't given?
p.s we're supposed to use the equation V=n/c (avogadro's law)
p.s we're supposed to use the equation V=n/c (avogadro's law)
You use the coefficients in the balanced chemical equation.
mols Mg x (2 mols HCl/1 mol Mg) = mols HCl.
Then to convert to grams, mols x molar mass.
(Avogadro's Law talks about equal volume of gases containing equal numbers of particles but there is nothing in yuor equation that leads me to believe we have gases present--except, of course for hydrogen).
mols Mg x (2 mols HCl/1 mol Mg) = mols HCl.
Then to convert to grams, mols x molar mass.
(Avogadro's Law talks about equal volume of gases containing equal numbers of particles but there is nothing in yuor equation that leads me to believe we have gases present--except, of course for hydrogen).