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adell [148]
3 years ago
13

If 50 mL of pure acetone is mixed with 450 mL of water, what is the percent by volume of acetone?

Chemistry
1 answer:
slega [8]3 years ago
4 0

Answer:

10%

Explanation:

The percent by volume of acetone is given by the following formula:

% v/v = Volume of acetone / Total Volume * 100%

Now we <u>calculate the total volume of the solution</u>:

Total Volume = Volume of Acetone + Volume of Water

Total Volume = 50 mL + 450 mL = 500 mL

Then we <u>calculate the percent by volume:</u>

% v/v = 50 mL / 500 mL * 100 % = 10%

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PH = -log [H3O+]
4.15 = -log [H3O+]
[H3O+] = 10^(-4.15)
[H3O+]= 7.08 × 10^-5
8 0
3 years ago
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What are duplet and octet elements ?Differentiate.​
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Octet means presence of a total of 8 electrons in its valence shell while in case of duplet only 2 electrons are present in valence shell.
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What is the relationship between KMT and Sea Level Rise?<br> CER format<br> 3-4 sentences
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4 0
1 year ago
A student was asked to determine the densities of the four metals listed. The student was asked to determine the density of an u
Iteru [2.4K]

Answer:

D is correct

Explanation:

because

we know that

density of lead is 11.36 g/cm3

and

density of tin is 7.31 g/cm3

so..

density of alloy by mixing 50/50

=(11.36+7.31)/2 g/cm3

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5 0
3 years ago
4.81*10^24 atoms of lithium
enyata [817]

Answer:

Mass = 55.52 g

Explanation:

Given data:

Number of atoms of Li = 4.81×10²⁴ atom

Number of grams = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

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8 moles

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Mass = 55.52 g

4 0
3 years ago
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