Answer:
We typically represent covalent bonds with a dash ( - ) between the atoms. This indicates a single bond. Ex: Cl - Cl
Single bond, double bond, triple bond.
Explanation:
We call it a single covalent bond because the atoms are sharing a single pair of electrons.
The reaction between Na2S and CuSO4 will give us the balanced chemical reaction of,
Na2S + CUSO4 --> Na2SO4 + CuS
This means that for every 78g of Na2S, there needs to be 159.6 g of CuSO4. The ratio is equal to 0.4887 of Na2S: 1 of CuSO4. Thus, for every 12.1g of CuSO4, we need only 5.91 g of Na2S. Thus, there is an excess of 9.58 g of Na2S. The answer is letter C.
Its in vertical columns. I hope this helps and you get a 100 on your test!
Sulfur trioxide. hope this helps
Answer:
Explanation:
We know that , the reaction between NaOH and HCl is given as
Form the above reaction we can say that
Number of moles of HCl =Number of moles of NaOH
Therefore
Therefore the numbers of moles needed of HCl wil be 
