The subscripts tell the ratio of one element to another in a
compound. In this case, there are 4 P atoms per 10 O atoms. This could also be
interpreted as 4 mol P per 10 mol O. Therefore:
Mol P = (38.5 mol P4O10)/(4 mol P/ 1 mol P4O10) = 154 mol P
Your answer is the element of S I think.
Answer:
C₃H₆ propene
Explanation:
Find the chemical formula by adding all the carbon and then all the hydrogen together.
Maybe like a diamond or something
Answer:
pH = 4.57
Explanation:
pH = pKa + log ([OAc⁺]/[HOAc])
Ka(HOAc) 1.8 x 10⁻⁵ => pKa = -log(1.8 x 10⁻⁵) = 4.74
[OAc⁻] = 0.20M
[HOAc] = 0.30M
pH = 4.74 + log([0.20]/[0.30]) = 4.47 + (-0.17) = 4.57