Which of the following is a valid unit for specific heat?
2 answers:
Answer: Option (d) is the correct answer.
Explanation:
When a substance is heated and the heat used to raise its temperature by a unit mass of the given amount is known as specific heat of the substance.
Mathematically,
where Q = heat added in calories or joules
m = mass of substance in grams or kg
C = specific heat
= change in temperature
Thus,
Hence, we can conclude that a valid unit for specific heat is ca.
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Answer:
The method is accurate in the calculation of the
Explanation:
As a first step we have to calculate the <u>average concentration </u>of find it by the method.
Then we have to find the<u> standard deviation:</u>
For the confidence interval we have to use the formula:
μ=Average±
Where:
t=t student constant with 95 % of confidence and 5 data=2.78
μ= ±
upper limit: 0.84
lower limit: 0.75
If we compare the limits of the value obtanied by the method (Figure 1 Red line) with the reference material (Figure 1 blue line) we can see that the values obtained by the method are within the values suggested by the reference material. So, it's method is accurate.
