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1 year ago

How many grams of ethanol, C₂H,OH, can be boiled with 564.1 kJ of heat energy? The molar heat of vaporization of ethanol is

Chemistry

1 answer:

nydimaria [60]1 year ago

3 0

Answer: 672.2 grams

Explanation:

With 564.1 kJ of heat energy, $564.1/38.6=14.613989637306$ moles of ethanol can be combusted.

So, we need to find the formula mass of ethanol.

The atomic mass of carbon is 12 g/mol.
The atomic mass of oxygen is 16 g/mol.
The atomic mass of hydrogen is 1 g/mol.
So, the formula mass of ethanol is $2(12)+6(1)+16=46$ g/mol.

Therefore, the mass of ethanol is $(46)(14.613989637306)=672.2$ grams.

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Describe how you would prepare 350 ml of 0.100 m c12h22o11 starting with 3.00l of 1.50 m c12h22o11

Leona [35]

To prepare 350 mL of 0.100 M solution from a 1.50 M solution, we simply have to use the formula:

M1 V1 = M2 V2

So from the formula, we will know how much volume of the 1.50 M we actually need.

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So we need 23.33 mL of the 1.50 M solution. We dilute it with water to a volume of 350 mL. So water needed is:

350 mL – 23.33 mL = 326.67 mL water

Steps:

1. Take 23.33 mL of 1.50 M solution

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2 years ago

What is the mass, in pounds, of 389 mL of a gas that has a density of 1.29 g/L?

devlian [24]

Answer: Mass of gas is 0.001 pounds.

Explanation:

Density is defined as the mass contained per unit volume.

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Given : Mass of gas = ?

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Volume of gas = 389 ml = 0.389 L (1L=1000ml)

Putting in the values we get:

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3 years ago

A thermometer reads an outside air temperature of 35°c. What is the temperature in degrees Fahrenheit

Hoochie [10]

35°c is equal to 95°f

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35 x 1.8=63

Now add 32

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(The equation for to solve for c and f is c1.8+32=f

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3 years ago

The substance which does the dissolving in a solution is

oksano4ka [1.4K]

Answer:

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6 0

3 years ago