Given that cao(s) + h2o(l) → ca(oh)2(s), δh°rxn = –64.8 kj/mol, how many grams of cao must react in order to liberate 525 kj of
1 answer:
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Answer:
Rate =
Explanation:
- Two reactants are present in this reaction which are
- We know overall order of a reaction is summation of individual order with respect to reactants present in rate law equation.
- Here, overall order of reaction is 2 including first order with respect to
- So, rate of reaction should also be first order with respect to another reactant i.e. first order with respect to
- So, rate law: rate =
Answer:- 0.134 seconds
Solution:- The speed is given as and the circumference is 24900 miles which is same as the distance light have to covered. It asks to calculate the time required to cover this distance by the light.
We need to do unit conversion from miles to meter as the speed is given in meter per second.
1 mile = 1609.34 meter
So,
= 40072566 meters
Know that,
It's rearranged to time as,
Let's plug in the values in it:
= 0.134 seconds
So, the light would take 0.134 seconds to travel the mentioned speed. The answer without the unit is 0.134.