Answered

A student is trying to identify the composition of a pure metal block by determining its density. The student records the mass of the sample to be 25.00 g. The rectangular block is 2.0 cm x 3.0 cm x 1.4 cm.
Which equation is necessary to determine the density sample.



Answer :

25/(2x3x1.4) AKA 25/8.4 which would equal about 2.98.
Parrain

The necessary equation to determine the density of the block is "d = 25 g / 8.4 cm"

First find the volume of the block:

= Length * Width * Height

= 2 x 3 x 1.4

= 8.4 cm

Now that you have the volume and the mass, you can insert it into the formula for density which is:

= Mass / Volume

Assuming density is denoted as b, the formula would therefore be:

d = 25 g / 8.4 cm

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