Question

how many grams of mg(oh)2 are in 7.5 x 1023 formula units (f.un.) mg(oh)2? which part of the conversion factor goes in the green box? 7.5 x 1023 f.un. 1 mole 6.02 x 1023 f.un. 1 mole 6.02 x 1023 f.un. 58.32 g

Explanation:

Step1: Determine the molar mass of \(Mg(OH)_2\)

The molar mass of \(Mg(OH)_2\) is \(58.32\ g/mol\). This is calculated as \(M = 24.31\ (Mg)+2\times(16 + 1.01)\ (OH)\).

Step2: Analyze the conversion factor

We are converting from formula units to moles (using \(6.02\times10^{23}\ f.un./1\ mole\)) and then to grams. The missing conversion factor in the green box is the molar mass of \(Mg(OH)_2\) which is \(58.32\ g\) per \(1\ mole\).

Answer:

\(58.32\ g\)