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2 years ago

Convert 4.50 e23 atoms of CO to grams.

Chemistry

1 answer:

hichkok12 [17]2 years ago

7 0

Answer:

10.4664 grams of CO

Explanation:

Remark

There's a couple of things you must look out for in this question.

1. The use of the term atoms. There are 2 atoms in each mol of CO

2. You need to divide by 2 to find the number of molecules which will lead to moles.

Divide the number of atoms by 2

4.50 e^23 / 2 atoms = 2.25 * 10^23 molecules.

Find the number of moles of CO

1 mol of anything is 6.02 * 10^23 molecules in this case

x = 2.25 * 10^23 molecules

1/x = 6.02 * 10^23/2.25 * 10 ^23 Cross multiply

1 * 2.25 * 10^23 = 6.02*10^23 * x Divide by 6.02 * 10^23

2.25 * 10 ^ 23 / 6.02 * 10^23 = x

x = .3738 moles of CO

<u>Step Three</u>

Find the gram molecular mass of CO

C = 12

O = 16

1 mole = 12 + 16 = 28 grams.

Find the number of gram in 0.3738 mols

1 mol = 28 grams

0.3738 mol = x Cross multiply

x = 28 * 0.3738

x = 10.4664 grams

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2 years ago

Calculate the molarity of the solution formed when 0.72 moles of CaBr2 is dissolved in 1.50 L water.

xxTIMURxx [149]

Answer:

The molarity of the formed CaBr2 solution is 0.48 M

Explanation:

Step 1: Data given

Number of moles CaBr2 = 0.72 moles

Volume of water = 1.50 L

Step 2: Calculate the molarity of the solution

Molarity of CaBr2 solution = moles CaBr2 / volume water

Molarity of CaBr2 solution = 0.72 moles / 1.50 L

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3 years ago

For a species with a diploid number of 26, indicate how many chromosomes will be present in the somatic nuclei of individuals th

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Answer:

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Tetraploid - 52

Trisomic - 27

Monosomic - 25

Explanation:

A haploid organism has half the chromosome number of a diploid version, hence 26/2 = 13

A triploid organism has 3 sets of a haploid chromosomes, hence 13 x 3 = 39

A tetraploid is double of a diploid, 26 x 2 = 52

Trisomic organisms have one extra chromosome in addition to the normal diploid. Hence 26 + 1 = 27

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3 years ago

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Answer:

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Explanation:

Do the final volume of water divided by the inital

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Then to the equation m/v

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3 years ago