Answer:
6.25% of the original amount
Explanation:
half-life means that half is gone for every certain period of time. Because the half life is 1 month, only half of the 'radionulide' is left every month.
after 1 month= 50%
after 2 months= 25%
after 3 months= 12.5%
after 4 months= 6.25%
The balance is A Go check other answer I posted
Single Replacement & Decomposition
<h3>Further explanation</h3>
Given
Two chemical reactions
1. Cl2 + 2NaBr ⇒2NaCl + Br2
2. 2NaCl ⇒2Na + Cl2
Required
Type of reaction
Solution
Equation 1 : A single replacement reaction is a chemical reaction in which one element replaces the other elements of a compound to produce new elements and compounds
General formula :
A + BC ⇒ AC + B
Equation 2 : the decomposition reaction of a compound into its constituent elements or compounds
General formula :
AB ⇒ A + B
The answer in this question is just easy and simple, since there are lots of <span>different enzymes being secreted in the stomach (the enzymes are made of protein and can be denatured by alternation of pH, each of these enzymes required to have a specific optimal pH. </span>
