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3 years ago

Weight of one mole of carbon = 12.01 g

Chemistry

2 answers:

dimulka [17.4K]3 years ago

5 0

28.01 g/mol is the answer for carbon monoxide (CO)

Otrada [13]3 years ago

3 0

Answer : The molecular weight of $CO$ is, 28.01 g/mole

Explanation : Given,

Weight of one mole of carbon = 12.01 g

or, Atomic weight of carbon = 12.01 g/mole

Weight of one mole of oxygen = 16.00 g

or, Atomic weight of oxygen = 16.00 g/mole

Molecular weight : It is defined as the sum of the atomic weight of the element present in the molecule.

The molecular weight of CO = Atomic weight of carbon + Atomic weight of oxygen

The molecular weight of CO = 12.01 g/mole + 16.00 g/mole

The molecular weight of CO = 28.01 g/mole

Therefore, the molecular weight of $CO$ is, 28.01 g/mole

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What is the osmolarity of .00001 grams (0.1 mg%) of ethanol (does not dissociate) in one liter?

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Explanation:

As it is known that non-electrolytes do not dissociate. Therefore, molarity of such a solution is equal to the osmolarity of solution.

As, molar mass of ethanol = 46.07 g/mol

Therefore, no. of moles of ethanol will be calculated as follows.

No. of moles = $\frac{mass}{\text{molar mass}}$

= $\frac{0.00001 g}{46.07 g/mol}$

= $2.17 \times 10^{-7}$ mol

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Molarity = $\frac{\text{no. of moles}}{volume}$

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= $2.17 \times 10^{-7}$ mol/L

Since, for the given solution Molarity = osmolarity

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