In general, if the temperature of a chemical reaction is increased, the reaction rate increases as well. The correct answer is A.
Different between potential energy and mechanical energy
Cu(OH)2<span> + </span>2<span> H3Po4 = Cu3(Po4)</span>2<span> + 6 H</span>2<span>O Reaction type: double replacement. Reaction stoichiometry, Limiting reagent. Compound, </span>Coefficient<span>, Molar Mass, Moles, Weight ... Please tell about this free chemistry software to your friends! ... Examples of </span>complete chemical equations<span> to balance: Fe + Cl2 ...</span>
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Answer:</h3>
20 g
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Explanation:</h3>
We are given;
Original mass of K-40 before decay = 80 g
Half life of Potassium-40 = 1.25 billion years
Time taken by the decay = 2.5 billion years
We are required to calculate the mass of K-10 that will remain after 2.5 billion years.
Using the formula;
Remaining mass = Original mass × (1/2)^n
where n is the number of half lives
Number of half lives, n = Time taken ÷ half-life
= 2.5 billion years ÷ 1.25 billion years
= 2
Remaining mass = 80 g × (0.5)^2
= 80 g × 0.25
= 20 g
Therefore, the mass of K-40 isotope that will remain after 2.5 billion years is 20 g.