Whether or not they are within the same group (vertical columns) within the periodic table, determines similarity of chemical properties.
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Answer:
Half life = 1 / k[Ao]
Explanation:
From:
1/ [A] = kt + 1/ [Ao]
Isolating t on its own, we have:
kt = 1 / [A] - 1 / [Ao]
t = 1 / [Ao] / k
Re-arranging we have:
t = 1 / k [Ao]
The t represents the t=half life of the second order reaction and the formula can be re-written as:
t1/2 = 1 / k [Ao]
This is so because second order reaction decreases at a much faster rate than zero and first order reactions and there slopes decreases to zero at a much faster rate.
Answer:

Explanation:
The Law of Conservation of Mass states that mass cannot be created or destroyed.
In terms of a chemical reaction, the mass of the reactants has to equal the mass of the products.
The reactants are A and B. The mass of A is 19 grams and the mass of B is 24 grams. Add the masses.
This is the mass of the reactants.
The products and C and D. The mass of C is 15 grams. The mass of the products has to equal the mass of the reactants, which is 43 grams. Subtract 15 from 43 to find D's mass.
<u>28 grams</u> of D will be produced.