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Mariana [72]
2 years ago
9

Deduce the molecular formula of hydrogen 18.2%, carbon 81.8%, relative molecular mass is 44​

Chemistry
1 answer:
ivanzaharov [21]2 years ago
7 0

Answer:

let number of carbon is an

Explanation:

hence 12 and + 2n is equal to 126

14 and is equal to 126

n is equal to 9

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Zinc is a pure substance. How could you make a mixture from a 1.0-g zinc disc?
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Answer:

D)Coat the disc with another pure substance, such as copper.

Explanation:

To make a mixture of the zinc, simply coat it with another pure substance such as copper. This will result in a mixture.

What then is a mixture?

  • They are impure substances with indefinite composition.
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We can see that coating the copper on the zinc does not alter the physical properties of the metal.

Most times, the copper will wear off and leave behind the zinc.

The metal coated can easily be removed and this signifies just a physical mix.

8 0
3 years ago
Name one Importance of solar power
spayn [35]
Because the sun is a sustainable source of energy that can be used to power homes and businesses globally. 

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4 years ago
What is the concentration of a solution in which 10.0 g of AgNO3 is dissolved in 500 mL of solution?
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molar concentration of AgNO₃ solution = 0.118 mole/L

Explanation:

Because we have the volume of the solution and there is no information about the density of the solution I will asume that you ask for the molar concentration.

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number of moles of AgNO₃ = 10 / 170 = 0.0588

molar concentration = number of moles / volume (L)

molar concentration of AgNO₃ solution = 0.0588 / 0.5

molar concentration of AgNO₃ solution = 0.118 mole/L

Learn more about:

molar concentration

brainly.com/question/1286583

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6 0
3 years ago
You perform an experiment to measure the speed of a car over time. The
Aliun [14]

Answer:

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Sodium ion is smaller than potassium.

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