69.3k views
1 vote
How to find the change in temperature using q=mcΔT when you don't have q?

a. Use experimental data to calculate q
b. Estimate q based on similar reactions
c. Cannot find ΔT without q
d. All of the above

User Racso
by
8.7k points

1 Answer

4 votes

Final answer:

The change in temperature can be determined without directly knowing q by using experimental data, estimating q from similar reactions, or acknowledging that it cannot be found without q, making the answer 'All of the above'.Option D is the correct answer.

Step-by-step explanation:

To find the change in temperature using the equation q = mcΔT, where q is the amount of heat energy, m is the mass, c is the specific heat, and ΔT is the change in temperature, you require the value of q. However, if you do not have q, you can still find ΔT using different methods:

  1. Use experimental data to calculate q by measuring the temperature change and knowing the mass and specific heat.
  2. Estimate q based on similar reactions which have been previously studied.
  3. Consider that it cannot be determined without q, unless you can use one of the other methods mentioned.

Thus, the answer to the question on how to find the change in temperature without q is: d. All of the above.

Note that if the other three quantities (mass, specific heat, and temperature change) are known or can be inferred, you can determine q and subsequently use it to solve for ΔT.

User Debasmita Sarkar
by
8.3k points