Just asked in Science & MathematicsChemistry · 1 month ago

# The density of a metal is calculated as follows. ?

The weight of 57.4 grams is divided by the volume 6.2 cm3. Using the approximate rule for significant figures in this calculation, the value of the density, in g/cm3, should be reported as:

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• Dr W
Lv 7
1 month ago

Over the past several months, this question has been asked by Justoo, Justyn, Jaylee, Jaylen, etc (all are the same troll) and now Just.. (remarkable coincidence).  And it's been answered countless times here on YA.

• 1 month ago

I agree with pisgahchemist apart from his mistake. It is 6.2 cm3, not 6.3 cm3 so the answer is 9.258 g/cm3 or 9.3 g/cm3 if working to two significant figures.

• 1 month ago

Density calculation .....

D = m / V = 57.4 g / 6.3 cm³ =  9.1 g/cm³

The answer is expressed to only two significant digits, based on the notion that the answer can be no more precise than the least precise factor (for multiplication and division), and 6.3 has only two significant digits.