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Citrus2011 [14]
3 years ago
12

What is the mass of a cube measuring 3cm on each side that had a density of 8.1g/cm3?

Chemistry
1 answer:
Hunter-Best [27]3 years ago
6 0

Answer:

48.6 g

Explanation:

Given data:

Length of one side = 3 cm

Density of cube = 8.1 g/cm³

Mass of cube = ?

Solution:

First of all we will calculate the volume of cube.

V = length × height × width

V = 3 cm × 3cm× 3cm

V = 27cm³

Now we will determine the mass by using density formula.

d = m/v

d = density

m = mass

v = volume

8.1 g/cm³ = m/ 27 cm³

m = 8.1 g/cm³ ×27 cm³

m = 48.6 g

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how many molecule of carbon dioxide are needed to react with excess iron oxide to produce 11.6 g of iron
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Answer:

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Explanation:

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? moles of C - 0.208 moles of Fe

= \frac{3 *0.208}{4} = 0.16 moles of carbon.

I hope this explanation was clear and useful.

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