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3 years ago

Are these right? Please help

Chemistry

1 answer:

kotegsom [21]3 years ago

4 0

Explanation:

Question - 14

Answer - A vapour is gas state of matter.

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Question - 13

Answer - Heat is not an example of matter.

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Question - 12

Answer - Compound

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Question - 11

Answer - Chemical Reaction

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Question - 10

Answer - Element

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Question - 6

Answer - Reactant

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Question - 5

Answer - Product

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To prepare an acetic acid/acetate buffer, a technician mixes 30.6 mL of 0.0880 acetic acid and 21.6 mL of 0.110 sodium acetate i

enyata [817]

Answer: There are 0.00269 moles of acetic acid in buffer.

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution in ml}}$ .....(1)

Molarity of acetic acid solution = 0.0880 M

Volume of solution = 30.6 mL

Putting values in equation 1, we get:

$0.0880M=\frac{\text{Moles of acetic acid}\times 1000}{30.6ml}\\\\\text{Moles of acetic acid}=\frac{0.0880\times 30.6}{1000}=0.00269mol$

Thus there are 0.00269 moles of acetic acid in buffer.

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3 years ago

Determine the correct name for the compound, Mg3N2. A) Manganese nitride B) Magnesium nitride Eliminate C) Magnesium (II) nitrid

kotegsom [21]

Magnesium Nitride, :)

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3 years ago

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Caleb is an inventor who has designed a new kind of fishing net. He is looking for a strong, flexible material that can be used

UkoKoshka [18]

Answer:

Its B Nylon

Explanation:

i just took the quiz and got it right.

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3 years ago

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20 ML of a gas at 200 K is heated until the new volume is 55ML what is the final temperature of the gas

MrRa [10]

Answer:

T2 = 550K

Explanation:

From Charles law;

V1/T1 = V2/T2

Where;

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V1 = 20 mL

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3 years ago

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Answer:

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3 years ago