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nydimaria [60]
3 years ago
5

A solid object has a mass of 30 grams and a volume of 10 cm3.

Chemistry
2 answers:
german3 years ago
7 0
To find the density of an object, you need to use the equation: D = M/V. This is density equals mass over volume.

Mass: 30 g
Volume: 10 cm3

30/10 = 3 

Density: 3 g/cm3


tresset_1 [31]3 years ago
6 0

<u>Answer:</u> The density of the object is equal to 3g/cm^3

<u>Explanation:</u>

Density of an object is defined as the ratio of its mass and volume. The chemical equation representing density of an object is:

\text{Density of an object}=\frac{\text{Mass of an object}}{\text{Volume of an object}}

We are given:

Mass of an object = 30 grams

Volume of an object = 10cm^3

Putting values in above equation, we get:

\text{Density of an object}=\frac{30g}{10cm^3}=3g/cm^3

Hence, the density of the object is equal to 3g/cm^3

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Explanation:

<em>Assuming the mass of sodium nitrate dissolved was 2.552g</em>

<em />

Molar concentration is an unit of concentration widely used in chemsitry defined as the moles of solute (In this case NaNO3) in 1L of solution.

To find this question we must find the moles of NaNO3 in 2.552g. With this mass and the volume (250mL = 0.250L) we can find molar concentration as follows:

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<em>Molar concentration:</em>

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