Question

what is the total charge of all protons in 1.0kg of carbon?

Answer 1

$N/N_A=m/M\to N=mN_A/M=1\cdot6.02\cdot 10^{23}/(12\cdot10^{-3})=502\cdot10^{23}$

$q_{total}=6\cdot502\cdot10^{23}\cdot1.6\cdot10^{-19}=$

$=48.2\cdot10^{6}(C)$