Fill in the coefficients that will balance the following reaction:
2 answers:
Answer:
Explanation: The coefficients of ,
,
, and
are 2, 1, 1 and 1 respectively.
According to the law of conservation of mass, the mass of the products must be same as the mass of the reactants in every chemical equation.
In order to do so , the number of atoms of every element must be same on both sides of the equation and thus the chemical equation is balanced.
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Answer:
3
Explanation:
Applying,
= R/R'............... Equation 1
Where n' = number of halflives that have passed, R = Original atom of the substance, R' = atom of the substance left after decay.
From the question,
Given: R = 40 atoms, R' = 5 atoms
Substitute these values into equation 1
= 40/5
= 8
= 2³
Equation the base,
n' = 3