Answer:
+5
Explanation:
You use the rules for oxidation numbers to calculate that the oxidation number of N is +5.
A word equation is a written description of a chemical reaction.
All word equations start with the reactants.
Then, what comes next is the word "react to form."
Finally, the products of the equation are mentioned.
An example is,
Zinc and Hypochondriac acid react to form hydrogen gas and zinc chloride.
Answer:
1.3 s
Explanation:
A first-order reaction can be represented through the following expression.
ln [A] = ln [A]₀ - k.t
where,
[A] is the concentration of the reactant A at a certain time t
k is the rate constant
When the concentration decreases to half its value ([A] = 0.5 [A]₀), the time elapsed is known as half-life t(1/2).
ln (0.5 [A]₀) = ln [A]₀ - k.t(1/2)
ln 0.5 = -k.t(1/2)
t(1/2) = -ln 0.5 / k = - ln 0.5 / (0.54 s⁻¹) = 1.3 s
Answer:
for a i think it is choice 2
for b i think it is the first choice
Explanation:
Answer:
the pressure would be 0.9 atmospheres
Explanation:
you just gotta add the presures for each of the gases that are added