Answer:
I think its the first one
Explanation:
The balance equation is :
<span>SO2 + CaO → CaSO3
</span>
1.
<span>(2100 tons) x (0.025 S) / (32.0655 g S/mol) x (1 mol SO2 / 1 mol S) x </span>
<span>(1 mol CaO / 1 mol SO2) x (56.0778 g CaO/mol)
= 91.81 tons CaO
</span>
2. <span>(2100 tons) x (0.025 S) x (907185 g/ton) / (32.0655 g S/mol) x (1 mol SO2 / 1 mol S) x </span><span>(1 mol CaSO3 / 1 mol SO2) x (120.1422 g CaSO3/mol)
= 1.784 x 10^8 g CaSO3</span>
An organism that breathes with its lungs, lays eggs and has feathers is a bird!
Answer:
Atoms are neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion.
Explanation:
This reaction can be written as
H2 + O2 => H2O.
Then, balanced, as
2H2 + O2 = 2H2O
There we see that we need 2 times more mol of H2 than O2. So mol of O2 is 1/2 mol of H2. That is 27.4 mol / 2 = 13.7 mol.