The temperature of a sample of water changes from 10°c to 20°c when the sample absorbs 418 joules of heat. what is the mass of the sample

0.00995Kg or 9.95g

Explanation:

Mass of the water (m)= ???

Heat capacity of water= 4200JKg-1

Temperature change= 20°C-10°C= 10°C

Heat absorbed =418 J

H=mcø

m= H/cø

m= 418/4200×10

m= 0.00995Kg or 9.95g

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.