Question

select the correct answer. 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. a. 0.143 g b. 1.43 g c. 7.01 g d. 7.81 g

Explanation:

Step1: Rearrange the formula

Given $Q = mH_f$, we solve for $m$ to get $m=\frac{Q}{H_f}$.

Step2: Substitute values

$Q = 2.960$ J and $H_f=422.5$ J/g. So $m=\frac{2.960}{422.5}$.

Step3: Calculate the mass

$m = 0.143$ g.

Answer:

A. 0.143 g