The heat transfer (Q) is given by mass, specific heat, and the change in the temperature. The heat absorbed in both trials is the same as Q is the same for both. Thus, option a is accurate.
<h3>What is heat transfer?</h3>Heat transfer is the gain and loss of heat by the system. It is given as the product of the mass, specific heat, and the change in the temperature. Heat transfer is shown as,
Q for trial 1 is calculated as:
Q = 30 * 4.18 * 40
= 5016 J
Q for trial 2 is calculated as:
Q = 40 * 4.18 * 30
= 5016 J
Therefore, the heat absorbed is the same for both as the heat transfer (Q) is the same in both trials.
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Answer: 1.4 moles
Explanation:
I can only assume you are looking for the amount of moles in 0.4M. the capital M means Molarity.
Molarity=moles of solute/liters of solution
Since we know the molarity is 0.4, we can plug this into our equation
moles= 1.4