Question

gequal masses of water of 20 degrees c and 80 degrees c are mixed. what is the final temperature of the mixture (assuming no loss of energy from the system)? question 6 options: 40 degrees c 50 degrees c 60 degrees c 70 degrees c

Answer 1

The final temperature of the mixture will be 30⁰C

Since it is given that 50 gms of water at 20 ⁰ C and 50 gms of water at 40⁰ C are mixed.  Since the masses of the liquid at different temperatures are the same, the answer is very easy and simple:  average of 20⁰C and 40⁰C.  that is 30⁰C.

the final temperature of the mixture =

    = [ m1 * T1 + m2 * T2 ] / (m1 + m2)

    = [ 50 gms * 20⁰ C + 50 gms * 40⁰C ]  / (50+50)

    = 3,000 / 100 = 30⁰C

In chemistry, we define the temperature of a substance as the average kinetic power of all of the atoms or molecules of that substance. No longer do all of the debris of a substance have identical kinetic strength. At any given time, the kinetic energy of the debris may be represented by means of a distribution.

Temperature performs a vital function in-hospital treatment (both humans and animals), food, beverages, and agriculture. Our average fitness is regularly reliant upon the temperature in lots of methods as nicely.

The SI unit of temperature as consistent with the global system of devices is Kelvin.

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