[ahawk1]

[Astrokel]

It looks correct to me perhaps they want it in the form of 4 sf and expoential form?

[ahawk1]

It looks correct to me perhaps they want it in the form of 4 sf and expoential form?

thanks i used two sig figs and it gave the answer to me! =]

[ARGOS++]

Dear ahawk1;

I got first another MW for decaborane, and second really another left over.

You may try the Diagram with your corrected data and you will easily get the correct answer:

"Stoichiometry Problem (#23'025)"

Therein is also an Example Diagram:  How to do a "Stoichiometry Problem".

Good Luck!
                    ARGOS⁺⁺