Answer:
4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l)
Explanation:
This is an oxidation-reduction (redox) reaction:
4 N-III - 20 e- → 4 NII
(oxidation)
10 O0 + 20 e- → 10 O-II
(reduction)
NH3 is a reducing agent, O2 is an oxidizing agent.
Answer:
A one-point pH change indicates the strength of the acid or base has increased or decreased tenfold; a 2-point change indicates a 100-fold change in acidity or alkalinity, and a 3-point change in pH indicates a 1000-fold change. Examples: • An increase in pH from 7.0 to 8.0 means the water is 10 times more basic.
Explanation:
Volume is mass times density
so v=m*d
v=125g*8.6g/ml
1075 ml because grams cancels out
Answer: use the ideal gas equation, PV = nRT
Explanation:
The ideal gas equation permits you to determine one variable, P, V, n or T, when you know the other two variables.
In this case, your are told you know P, V and T, so you can solve for n:
n = PV / (RT)
Remember this:
R is the universal constant of gases, and you must use the adequate units.
T is the temperature in absolute scales, i.e Kelvin.
