<span>c. remains the same
</span>----------------------------------------------------
As electrical energy is converted into heat energy, the total amount in the system remains the same
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according to law of conservation of energy
1:1
Fe has a charge of 2+ while O has a charge of 2-.
Formula: FeO
M1Xv1=M2XN2
.0MX.02L=M2X.02L
M2=.002/.01
M2 =0.2
The correct answer is Three. Solving the given expression we get,
2.524 g (5.1 × 106 g) ÷ (6.85 × 103 g) = 1364.47÷ (6.85 × 103 g) = 1364.47÷ 705.55 = 1.93
Here, the number of significant figures is three. Thus, the result should have three <span>significant figures.</span>
