Answer:
+5
Explanation:
The oxidation number of phosphorus can be obtained as follows:
H4P2O7 = 0
4(+1) + 2P + 7(—2) = 0
4 + 2P —14 = 0
Collect like terms
2P = 14 — 4
2P = 10
Divide both side by 2
P = 10/2
P = +5
The oxidation number of phosphorus is +5
Answer:
Water
Explanation
there is a hard way and an easy way to do this either you fill it up with cold water and it takes longer to disolve or you use hot/room temp water and it disolves faster because the sault particles slowly break of from one another and then disolve with in the water
Answer:
a) is the answer as water directly changes its state
Answer:
Explanation:
We can use the formula for momentum to calculate the mass.
