The metric system is based on powers of 10 so it is much easier to convert units, often just by moving the decimal point.
<span>The mass of one mole of sodium bicarbonate (aka NaHCO3) is equal to 1 * 22.99g/mol + 1 * 1.00g/mol + 1 * 12.01g/mol + 3 * 16.00g/mol = 83.91g/mol. From this, we can convert 4.2g of NaHCO3 to moles by dividing by 83.91g/mol, to get 0.050 moles of sodium bicarbonate.</span>
The answer should be false. Elements contain only one atom.
0.843 moles would be the answer
K + S = K2S
Potassium reacts with sulfur to produce potassium sulfide
