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scZoUnD [109]
3 years ago
8

When viewing cells list the following in order of size : cell,atoms ,cell membranes, molecules please help me

Biology
1 answer:
Mnenie [13.5K]3 years ago
7 0

Atoms, molecules, cell membranes, then cell (in order from smallest to biggest).

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Gas chromatography (GC) is a method of separating mixed compounds. The separation will depend on each compound's retention time. Compounds with higher molecular weights will elute out slower than those with lower molecular weight. This is due to their difference in boiling points. The larger the structure, the higher the boiling point.

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Answer:

1) CO₂

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Explanation:

The balanced reactions are:

CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

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2) Calculate mass of CaCO₃:

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Convert to moles:

(0.2215 g CaCO₃) (1 mol / 100.1 g) = 0.002213 mol CaCO₃

Find moles of CaCO₃:

(0.002213 mol CaCO₃) (1 mol CO₂ / mol CaCO₃) = 0.002213 mol CO₂

Convert to mass:

(0.002213 mol CO₂) (44.01 g / mol) = 0.09738 g CO₂

Calculate mass of MgCO₃:

(0.5236 g) (0.5770) = 0.3021 g MgCO₃

Convert to moles:

(0.3021 g MgCO₃) (1 mol / 84.31 g) = 0.003583 mol MgCO₃

Find moles of MgCO₃:

(0.003583 mol MgCO₃) (1 mol CO₂ / mol MgCO₃) = 0.003583 mol CO₂

Convert to mass:

(0.003583 mol CO₂) (44.01 g / mol) = 0.1577 g CO₂

Total mass of CO₂:

0.09738 g CO₂ + 0.1577 g CO₂ = 0.2551 g CO₂

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