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harina [27]
3 years ago
15

MULTIPLE CHOICE

Chemistry
1 answer:
Flauer [41]3 years ago
6 0

Answer:

its very simple ans we have 2 just multiply256

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Calculate the number of moles of C2H6 in 6.29×1023 molecules of C2H6.
Kipish [7]

1.05moles

Explanation:

Given parameters:

Number of molecules of C₂H₆ = 6.29 x 10²³molecules

Unknown:

Number of moles = ?

Solution:

The mole is the amount of substances that contains Avogadro's number of particles i.e 6.02 x 10²³

 To find the number of moles:

  number of moles = \frac{number of particles}{Avogadro's number}

  number of moles = \frac{6.29 x 10^{23} }{6.02 x 10^{23} }

  number of moles = 1.05moles

Learn more:

moles brainly.com/question/1841136

#learnwithBrainly

7 0
3 years ago
NEED HELP ASAP
katrin [286]
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7 0
3 years ago
What is the theoretical yield of SO3 produced by 8.96 g of S?
Virty [35]

Answer: Theoretical yield of SO_3 produced by 8.96 g of S is 33.6 g

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

\text{Moles of} S=\frac{8.96g}{32g/mol}=0.28moles

The balanced chemical equation is:  

2S+3O_2\rightarrow 2SO_3  

According to stoichiometry :

2 moles of S produce =  3 moles of SO_3

Thus 0.28 moles of S will produce=\frac{3}{2}\times 0.28=0.42moles  of SO_3  

Mass of SO_3=moles\times {\text {Molar mass}}=0.42moles\times 80g/mol=33.6g

Thus theoretical yield of SO_3 produced by 8.96 g of S is 33.6 g

7 0
2 years ago
. The speed of a sound in air is 343 m/s. The sound wave has a frequency of 436 HZ and its period is 0.0023 s. What is the wavel
Taya2010 [7]

Answer: 0.79

Explanation:

6 0
3 years ago
Can anyone explain enzymes in a simple way?
Sedaia [141]
Enzymes are biological catalysts which means they accelerate chemical reactions.
Hope this helps :)
4 0
2 years ago
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