Answer:

Explanation:
Given that,
Mass of the sample, m = 275 g
It required 10.75 kJ of heat to change its temperature from 21.2 °C to its melting temperature, 327.5 °C.
We need to find the specific heat of the metal. The heat required by a metal sample is given by :

c is specific heat of the metal

So, the specific heat of metal is
.
The best answer choice you could go for is B pure substance, a pure substance is a compound that is made of one element, like a diamond.
Mass × velocity = momentum
74 x 15 = momentum
The answer is C, good luck mate