Question

A newly discovered metalloprotein, which contains three atoms of cd per molecule of protein, is found to be 0.782% cd by mass. calculate the molar mass of the metalloprotein.

Answer 1

Answer: 42966.7 g/mol

Step-by-step explanation: As 1 molecule of protein contains 3 atoms of Cd.

1 mole of protein contains=
`6.023* 10^(23)* 3 atoms`=3 moles of Cd.

1 mole of Cd weighs= 112 g

3 moles of Cd weigh=
`(112)/(1)* 3=336g`

Given: 0.782% of Cd is present by mass. Thus if x is the molar mass of protein,

`(0.782)/(100)* x=336g`

`x=42966.7g/mol`