What is the molar mass of $Sr(NO_2)_2$ ?

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Answer 1 · 2017-01-28T09:38:14

Well, the atomic mass of $Sr$ is $87.6*g*mol^-1$ ....

That of nitrogen is $14.01*g*mol^-1$ ; and that of oxygen is $15.999*g*mol^-1$ .

Do you suppose you could do the sum: $(87.6+2xx14.01+4xx15.999)*g*mol^-1$ ?

Why did I mulitply the atomic mass of oxygen by four? Would you have to remember these atomic weights in an exam?

What is the molar mass of Sr(NO_2)_2Sr(NO_2)_2?