Question

Which has the highest mass among the given option:

• A. 50 g of ion
• B. 5 moles of $N_2$
• C. $0.1$ mol atom of Ag
• D. ${10}^{2}3$ atom of carbon

Answer 1

The correct option is B 5 moles of $N_2$

We convert all values to grams

Iron=$50g$ (Given)

$N_2=5$ moles=$5\times 28=140g$

$0.1$ mol of $Ag=0.1\times 107.87=10.787g$

${10}^{23}\text{atoms of C}$=

$12g⟶6.023\times {10}^{23}\text{atoms of C}$

$?⟶{10}^{23}$

$\therefore =\frac{12\times {10}^{23}}{6.023\times {10}^{23}}\simeq 2g$

So, $5$ moles of $N_2$ has the highest mass.