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yan [13]
4 years ago
13

find the density of a material given when a 5.03 g sample is place in 47.54 mL of water the water level rises to 50.78 mL

Chemistry
1 answer:
alina1380 [7]4 years ago
5 0

Answer:

The density of a material given is <u>1.55 g/mL</u>

Explanation:

Density = Mass per unit volume of the substance .

Density=\frac{mass}{Volume}

Initial Volume of water = 47.54 mL

Total volume = Volume of water + material = 50.78 mL

Volume of material = Total volume - volume of water

Volume of material = 50.78 - 47.54 = 3.24 mL

Volume of material = 3.24 mL

Mass of the material = 5.03 g

Density=\frac{mass}{Volume}

Density=\frac{5.03}{3.24}

Density = 1.55g/mL

The density of a material given is <u>1.55 g/mL</u>

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Answer:

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Explanation:

First you have to calculate the molar mass of carbon dioxide ⇒ 44 grs/mol. Then,

44 grs ------------- 1 mol CO2

165 grs ------------ x = 3.75 moles of CO2.

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1 mol CO2 ---------------- 6.022 x 10^23 molecules CO2

3.75 moles CO2-------- x = 2.258 x 10^24 molecules CO2.

There are 2.258 x 10^24 molecules CO2 in 165 grams of CO2.

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