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rodikova [14]
3 years ago
10

ASAP MULTIPLE CHOICE

Chemistry
1 answer:
OleMash [197]3 years ago
7 0
The mass of electrons , i just did the same test and got it right
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A sample of benzene was vaporized at 25◦C. When 37.5 kJ of heat was supplied, 95.0 g of the liquid benzene vaporized. What is th
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Answer:

Enthalpy of vaporization = 30.8 kj/mol

Explanation:

Given data:

Mass of benzene = 95.0 g

Heat evolved = 37.5 KJ

Enthalpy of vaporization = ?

Solution:

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Number of moles = mass/ molar mass

Number of moles = 95 g/ 78 g/mol

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Enthalpy of vaporization =  37.5 KJ/1.218 mol

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Akimi4 [234]
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3 years ago
Perform the following operation and express the answer in scientific notation. 7.0x10^3x1.1x10^7
dimulka [17.4K]

Answer:

The answer is: 7.7\times10^{10}

Explanation:

Scientific notation is of the kind: a.bc\times10^{x}

The given calculation:

7.0\times10^{3}\times1.1\times10^{7}=(7\times1.1)\times10^{(3+7)}

=7.7\times10^{10}

Therefore, the answer in scientific notation is: 7.7\times10^{10}

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Answer:

low weight and great area

Explanation:

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