Answer:
1) As the temperature increased what happened to the N2O4 concentration, it decreased
2) Formation of products, products are the right hand side of the equation.
3) Right to left is exothermic
4) Change in enthalpy N2O4 ⇔2NO2, HR = -14 kcal
As it's an exothermic reaction, the enthalpy of the reactants is higher than the products and the sign of the HR will be negative.
Explanation:
N2O4 ⇔2NO2
(colorless) (reddish-brown)
1) As the temperature increased what happened to the N2O4 concentration, it decreased
2) Formation of products, products are the right hand side of the equation.
3) Right to left is exothermic
4) Change in enthalpy N2O4 ⇔2NO2, HR = -14 kcal
As it's an exothermic reaction, the enthalpy of the reactants is higher than the products and the sign of the HR will be negative.
Answer:
True
Explanation:
Significant digits include non-zero digits (unless the zero is between two non-zero numbers)
In 12,785.000, there are 5 non-zero digits:
1 2 7 8 5
The answer is 4.0 moles of magnesium
because...
..
...4.0mol Makmol O2 =3.0mol O2
This is an incomplete question, here is a complete question.
Consider the second-order decomposition of nitroysl chloride:
At 450 K the rate constant is 15.4 atm⁻¹s⁻¹. How much time (in s) is needed for NOCl originally at a partial pressure of 53 torr to decay to 10.6 torr?
Answer : The time needed for NOCl is, 2.52 seconds.
Explanation : Given,
Rate constant =
Initial partial pressure of NOCl = 56 torr = 0.0737 atm
final partial pressure of NOCl = 14.5 torr = 0.0191 atm
The expression used for second order kinetics is:
where,
k = rate constant
t = time
= concentration at time 't'
= initial concentration
As we know that,
Thus, the expression of second order kinetics will be:
As,
So, ............(1)
Now put all the given values in the above expression 1, we get:
Therefore, the time needed for NOCl is, 2.52 seconds.