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hichkok12 [17]
3 years ago
10

If 13.8 moles of carbon (c), with a density of 2.26 g/ml, are needed for a chemical reaction, how many milliliters of carbon are

needed? 73.3 ml c 16.5 ml c 6.11 ml c 2.60 ml c
Chemistry
2 answers:
charle [14.2K]3 years ago
8 0

13.8 moles of carbon = 12 g/mol*13.8 or 165.6 grams

165.6 grams/ 2.26 g/mL = 73.27434 or 73.3 mL


I hope this helps!!!!


Aleks [24]3 years ago
5 0

Answer:

73.3 ml of carbon are needed

Explanation:

To determine the volume of carbon needed, the formula for density can be used. The formula for density is

Density = mass ÷ volume

Although the density (2.26 g/ml) was provided in the question, but the mass was not provided.

The mass can be derived from the formula for number of moles shown below.

number of moles = mass ÷ molar mass

number of moles of carbon (provided in the question) is 13.8 moles and the molar mass of carbon is 12 g/mol hence

13.8 = mass ÷ 12

mass = 13.8 × 12

mass = 165.6g

If the mass of the carbon needed for the reaction is 165.6g and the density is 2.26 g/ml, the volume needed will be

Density = mass ÷ volume

2.26 = 165.6 ÷ volume

volume = 165.6 ÷ 2.26

volume = 73.3 ml

73.3 ml of carbon are needed

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max2010maxim [7]

There are 11 Carbon atoms in the compound.

<u>Solution:</u>

Carbon atom count is the ratio of the M peak to the M+1 peak.

\text{ Number of Carbon atoms }=\frac{\text { Relative intensity of } M+1 \text { peak }}{0.011 \times \text { Relative tntensity of } M \text { peak }}

Here M peak is 57.10% and M+1 peak is 6.83%. On applying the values in the formula we get,

\frac{0.0683}{0.011\times0.571g} = 10.87\approx11

Therefore, the number of Carbon atoms in the compound are 11.

Refer the image attached below for a better understanding of M peak and M+1 peak.

The heaviest ion that has the greatest m/z value is said to be the molecular ion peak in mass spectrum.

6 0
3 years ago
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Answer:

a converging plates

Explanation:

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2 years ago
Can I get help with this, please!!
kondor19780726 [428]

Pressure in the submarine when the temperature is changed to 293 K is 108.9 K Pa

Explanation:

Pressure in the submarine = 108.9 kPa

Volume, V = 2.4 * 10^5 L

Pressure, P = 116k Pa

Temperature, T = 312 K

Ideal gas law: PV = nRT  or  n = PV / RT

So, moles of gas, n =116 KPa * 2.4 * 10 ^5L / 8.314 LK Pa K^-1 *312 K

= 1.073 *10^4 mol

when temperature is changed to 293K,

PV = nRT  or P = nRT / V

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Calculate the time it takes for an object moving with a speed of 13m/s to travel 50 m
kykrilka [37]

Answer:

<h3>The answer is 3.85 s</h3>

Explanation:

The time taken can be found by using the formula

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From the question we have

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We have the final answer as

<h3>3.85 s</h3>

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