In acidic solutions you have H+ but in basic solutions you have OH-.
You need know that for to balance the reaction.
P₄O₁₀ + 6H₂O → 4H₃PO₄
The equation shows us that the molar ratio of
P₄O₁₀ : 6H₂O = 1:6
We also know that one mole of a substance contains 6.02 x 10²³ particles. We can use this to calculate the moles of water.
moles(H₂O) = (5.51 x 10²³) / (6.02 x 10²³)
= 0.92 mole
That means moles of P₄O₁₀ = 0.92 / 6
= 0.15
Each mole of P₄O₁₀ contains 4 moles of P.
moles(P) = 4 x 0.15 = 0.6 mol
Mr of P = 207 grams per mol
Mass of P = 207 x 0.6
= 124.2 grams
Answer:8
in the respiratory system
a.
Explanation:
1. 8
2. It's a Noble gas
3. No because it doesn't need any more electrons
4. Physical - odorless yellow inflammable and conductive when it's a plasma
Chemical - unstable
Pick me as brainliest pl0x XD
Answer:
Explanation:
Mass percent is defined as the mass of an element divided by the sum of masses of all the elements multiplied by 100. It is generally used to define the concentration. It does not depend on concentration.
It is given as;
Mass percent = (mass of an element / Total mass of the compound ) × 100
Mass of compound (alloy) = 78.2 g copper + 103.5 g zinc +2.8 g lead = 184.5 g
(a) Cu
Mass of Cu = 78.2
Mass percent = (78.2 / 184.5) * 100 = 42.38%
(a) Zn
Mass of Zn = 103.5
Mass percent = (103.5 / 184.5) * 100 = 56.10%
(c) Pb
Mass of Pb = 2.8
Mass percent = (2.8 / 184.5) * 100 = 1.52%
