Question

24 g of sodium chloride at 25 °C are mixed with 272 g mercury at 50 °C. Find the

system's final temperature.

Answer 1

the correct ans

Step-by-step explanation:

The quantitative amount of energy that is necessary to provide to a substance whose temperature has to be increased is depicted as heat capacity. When the temperature is changed by one degree Celsius and the amount is fixed to one gram, then the heat capacity is depicted as specific heat capacity.

Answer 2

When 24 g of sodium chloride at 25 °C are mixed with 272 g mercury at 50 °C, the final temperature is approximately 51.0 °C.

Step-by-step explanation:

To find the final temperature of the sodium chloride crystal, we need to use the equation q = mcΔT

Where

q is the heat supplied

m is the mass of the crystal

c is the specific heat capacity

ΔT is the change in temperature.

First, we convert the given heat from calories to joules by using the conversion factor 1 cal = 4.184 J.

So, 147 cal is equal to 147 * 4.184 J = 613.098 J.

Next, we rearrange the equation to solve for ΔT: ΔT = q / (mc).

Plugging in the values, we get ΔT = 613.098 J / (10.7 g * 4.184 J/g°C) = 13.985 °C.

Therefore, the final temperature of the crystal is 37.0 °C + 13.985 °C = 50.985 °C, which can be rounded to 51.0 °C.