3 years ago

List three examples of a carbon reservoir.

Chemistry

1 answer:

romanna [79]3 years ago

8 0

Answer:

Oceans, Fossil fuels, atmosphere

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Placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 mL. The weight of the sample

Alenkinab [10]

Answer:

Density, $d=6.38\ g/cm^3$

Explanation:

It is given that, placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 mL.

It means that the volume of the sample is 12 mL

The weight of the sample is 76.6 g

We need to find the density of the sample.

12 mL = 12 cm³

The formula of density is given by :

$d=\dfrac{m}{V}\\\\d=\dfrac{76.6\ g}{12\ cm^3}\\\\d=6.38\ g/cm^3$

So, the density of the sample is $6.38\ g/cm^3$ .

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under what temperature will volume of gas at 0 degree celcius double itself if the pressire is kept constant ????

neonofarm [45]

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273.15° C

Explanation: Ideal gasses tend to double in volume when their temperature doubles. 0°C = 273.15K so double 273.15 gives 546.3K.

Converting back to Celcius

546.3-273.15 =273.15°C

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An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?

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0.725 moles

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Use the mole = mass/mr equation to find the moles.

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