Question

A sample of monochloro pentaborane (9), B5H8Cl, has a mass of 20.7 g. What amount, in moles, does this mass represent?

Step 1

Chemical formula of monochloro pentaborane = B_{5}H_{8}Cl.

Above compound contains B, H and Cl atom.

Step 2

Molar mass of B-atom = 10.8 g/mol

Molar mass of H-atom = 1 g/mol

Molar mass of Cl-atom = 35.5 g/mol

Therefore,

Step 3

Relation between mass and ...

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