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torisob [31]
3 years ago
9

Explain how carbon moves in and out of the ocean.

Chemistry
1 answer:
Marta_Voda [28]3 years ago
8 0

Answer:

Living things in the ocean are able to move carbon from the atmosphere into surface waters.

Explanation:

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Which statement explains the similarity between momentum and kinetic energy of an object?
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Momentum and Kinetic Energy...They both are directly proportional to the Mass and Velocity of the object and they are the only factors which determine them.

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What is the si unit for heat
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Use this picture to explain that an electrically charged object can attract an uncharged object without any contact. Your answer
taurus [48]

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Explanation:

7 0
3 years ago
How many grams of oxygen (O) are present in 0.0207 moles of Ca(HCO 3) 2
Zolol [24]

Answer:

1.99grams

Explanation:

- First, we need to calculate the molar mass of the compound: Ca(HCO3)2

Ca = 40g/mol, H = 1g/mol, C = 12g/mol, O = 16g/mol

Hence, Ca(HCO3)2

= 40 + {1 + 12 + 16(3)}2

= 40 + {13 + 48}2

= 40 + {61}2

= 40 + 122

= 162g/mol

Molar mass of Ca(HCO3)2 = 162g/mol

- Next, we calculate the mass of oxygen in one mole of the compound, Ca(HCO3)2.

Oxygen = {16(3)}2

= 48 × 2

= 96g of Oxygen

- Next, we calculate the percentage composition of oxygen by mass by dividing the mass of oxygen in the compound by the molar mass of the compound i.e.

% composition of O = 96/162 × 100

= 0.5926 × 100

= 59.26%.

- The number of moles of the compound, Ca(HCO3)2, must be converted to mass by using the formula; mole = mass/molar mass

0.0207 = mass/162

Mass = 162 × 0.0207

Mass = 3.353grams

However, in every gram of Ca(HCO3)2, there is 0.5926 g of oxygen

Hence, in 3.353grams of Ca(HCO3)2, there will be;

0.5926 × 3.353

= 1.986

= 1.99grams.

Therefore, there is 1.99grams of Oxygen in 0.0207 moles (3.353g) of Ca(HCO3)2.

5 0
3 years ago
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