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mamaluj [8]
3 years ago
8

What is the mass of 5.130 moles of Table salt, sodium chloride (NaCl)

Chemistry
1 answer:
mina [271]3 years ago
5 0

<em>The answer is 58.44277</em>

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Which statement about covalent bonds and electrons is true?
Illusion [34]
<span>D) Eectrons in covalent bonds are not always shared equally.</span>
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How many molecules of CO2 at standard temperature and pressure in 5.4 moles of CO2
olganol [36]

Answer:

3.25×10²⁴ molecules.

Explanation:

From the question given above, the following data were obtained:

Number of mole of CO₂ = 5.4 moles

Number of molecules of CO₂ =?

The number of molecules of CO₂ in 5.4 moles can be obtained as follow:

From Avogadro's hypothesis,

1 mole of CO₂ = 6.02×10²³ molecules

Therefore,

5.4 moles of CO₂ = 5.4 × 6.02×10²³

5.4 moles of CO₂ = 3.25×10²⁴ molecules

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8 0
3 years ago
The number 875000 written in scientific notation would be
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Answer:

8.75 x 10^5

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Calculate the standard entropy of vaporization of ethanol at its boiling point 285 K. The standard molar enthalpy of vaporizatio
Ivanshal [37]

Answer:

standard entropy of vaporization of ethanol = 142.105 J/K-mol

Explanation:

given data

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to find out

standard entropy of vaporization of ethanol

solution

we get here standard entropy of vaporization of ethanol that is expess as

standard entropy of vaporization of ethanol ΔS = \frac{\Delta H}{T} .............1

here ΔH is enthalpy of vaporization of ethanol and  T is temperature

put value in equation 1

standard entropy of vaporization of ethanol ΔS =  \frac{40.5*10^3}{285}

standard entropy of vaporization of ethanol = 142.105 J/K-mol

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