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2 years ago

HELP! Ethanol has a density of 0.8 g/cm3. a. What is the mass of 225 cm3 of ethanol? b. What is the volume of 75.0 g of ethanol?

Chemistry

1 answer:

IRINA_888 [86]2 years ago

5 0

Answer:

The correct answers are:

a) 180 g

b) 93.7 cm³

Explanation:

The density of a substance is the mass of the substance per unit of volume. So, it is calculated as follows:

density= mass/volume

From the data provided in the problem:

density = 0.8 g/cm³

a) Given: volume= 225 cm³

mass= density x volume = 0.8 g/cm³ x 225 cm³ = 180 g

b) Given: mass= 75.0 g

volume = mass/density = 75.0 g/(0.8 g/cm³)= 93.75 cm³≅ 93.7 cm³

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Answer:

The answer to your question is 7160 cm

Explanation:

Data

diameter = 1 mm

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Process

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substitution

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Answer:

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What volume in<br><br> L<br><br> of a 0.724 M Nal solution contains 0.405 mol of Nal ?

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Answer:

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2 years ago

Consider the reaction: 2 Al + 3Br2 → 2 AlBr3 Suppose a reaction vessel initially contains 5.0 mole Al and 6.0 mole Br2. What is

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Answer:

4 moles of $AlBr_3$ and 1 mole of $Al$ will be present in the reaction vessel

Explanation:

The reaction given in the question is

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Since 3 moles of $Br_2$ requires 2 moles of $Al$

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