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Platinum metal is used in jewelry; it is also used in automobile catalytic converters. What is the mass of a cube of platinum 4.40 cm on an edge? The density of platinum is 21.4 g/cm^3?

Answer 1

Mateo Aguilar

Volume of this cube is 85.184 cm^3 and mass=1822.94 grams

Volume of this cube #V= a^3#

#V=4.4^3#

#V=85.184 cm^3#

Since density (d) is 21.4 g per cubic centimeter

Mass will be #M=d*V#

#M=21.4*85.184 = 1822.94 grams = 1.82 kg#

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Answer 2

Owen Ambrose

The mass of a cube of platinum with an edge length of 4.40 cm is approximately 4071.36 grams.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.