Answer:
A
Explanation:
Surface water percolates downwards to join the aquifer or the water table ultimately forming ground water
Sulfur atom= number of moles of the compound * number of sulfur atoms * Avogadro’s numbers
So it’s
4.6*1*6.022*10^23
Answer:
Explanation:
The equation tells you that for every mol of H2 you need 2 mols of Na to get it.
1 H2 / 4 mols H2 = 2 mols Na / x Cross multiply
1*x = 4 * 2
x = 8 mol Na