Question

What is the mass of a titanium alloy that has a heat of fusion of 422.5 joules/gram and requires 2,960 joules of energy to melt completely

Use the formula Q = mHf

Answer 1

The mass of the titanium alloy is 7.005 g.

Step-by-step explanation:

Heat of fusion of titanium =
`\Delta H_f=422.5 Joules/gram`

Amount of heat required to melt the titanium alloy of mass m:

Q = 2,960 Joules

`Q=m\Delta H_f`

`m=(Q)/(\Delta H_f)=(2,960 Joules)/(422.5 Joules/gram)`

m = 7.005 mg

The mass of the titanium alloy is 7.005 g.

Answer 2

The mass of titanium alloy is 7.01 g

calculation

Q=mHF

where

Q(heat)= 2960 j

M(mass) = ?

Hf( heat of fusion) = 422.5 j/g

make M the subject of the formula by diving both side of equation by Hf

M=Q/Hf

M= 2960 j/422.5 j/g = 7.01 g