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Rainbow [258]
3 years ago
8

How is ethanol different from carbon dioxide?

Chemistry
2 answers:
ira [324]3 years ago
6 0

Answer:

B

Explanation:

Ethanol is C2H6O. Carbon diozidex is CO2. Ethanol has hydgrogen, where carbon dioxide does not.

Kazeer [188]3 years ago
5 0
Answer: C

Explanation: cardio dioxide consists of one carbon atom and one oxygen atom
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Which of the following terms refers to the area immediately around the eye
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the eye socket

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As stars get older, before they collapse, they throw off dust, heavy atoms and other materials an form a new
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B or D

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Both of the silicon-chlorine single bonds in sicl4 are polar. in which direction should the polarity arrows point?
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3 years ago
Urea, (NH2)2CO, is a product of metabolism of proteins. An aqueous solution is 37.2% urea by mass and has a density of 1.032 g/m
Feliz [49]

Answer:

The molarity of urea in this solution is 6.39 M.

Explanation:

Molarity (M) is <em>the number of moles of solute in 1 L of solution</em>;  that is

molarity = moles of solute ÷ liters of solution

To calculate the molality, we need to know the number of moles of urea and the volume of solution in liters. We assume 100 grams of solution.

Our first step is to calculate the moles of urea in 100 grams of the solution,

using the molar mass a conversion factor. The total moles of 100g of a 37.2 percent by mass solution is

60.06 g/mol ÷ 37.2 g = 0.619 mol

Now we need to calculate the volume of 100 grams of solution, and we use density as a conversion factor.

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This solution contains 0.619 moles of urea in 96.9 mL of solution. To express it in molarity, we need to calculate the moles present in 1000 mL (1 L) of the solution.

0.619 mol/96.9 mL × 1000 mL= 6.39 M

Therefore, the molarity of the solution is 6.39 M.

4 0
3 years ago
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