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photoshop1234 [79]
2 years ago
13

A chemist will use a sample of 30 g of ethanol (ch3ch2oh) in an experiment. in one to two sentences, make and justify a claim ab

out the number of moles of ethanol the chemist will use.
SAT
1 answer:
pav-90 [236]2 years ago
7 0

The number of mole of ethanol, CH₃CH₂OH the chemist will use in the experiment is 0.65 mole

<h3>Description of mole </h3>

The mole of a substance is related to it's mass and molar mass according to the following equation:

Mole = mass / molar mass

<h3>How to determine the mole of CH₃CH₂OH</h3>

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

  • Mass of CH₃CH₂OH = 30 g
  • Molar mass of CH₃CH₂OH = 12 + (1×3) + 12 + (1×2) + 16 + 1 = 46 g/mol
  • Mole of CH₃CH₂OH =?

Mole = mass / molar mass

Mole of CH₃CH₂OH = 30 / 46

Mole of CH₃CH₂OH = 0.65 mole

Learn more about mole:

brainly.com/question/13314627

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2 years ago
A company has the goal of doubling their revenue from 32million dollars to 64 million dollars over the next 2 years. If the comp
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Answer: the company has to increase its revenue in 33.33%

Explanation:

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Adam can clean a room in 3 hours. If his sister Maria helps, they can clean it in 2 2/5 hours. How long will it take Maria to do
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Adam can clean a room in 3 hours. If his sister Maria helps, they can clean it in 225 hours. How long will it take Maria to do the job alone?
2 2 = 12 Together time, 2 2 , needs to be converted to fraction 555
Adan:3,Maria:x,Total: 5 Clearlystatetimesforeachandtotal,usingxforMaria 12
1+1= 5 Usingreciprocals,addtheindividualtimesgivestotal 3 x 12
1

1(12x) + 1(12x) = 5(12x) 3 x 12
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Multiply each term by LCD of 12x
Reduce each fraction
Move variables to one side, subtracting 4x Our solution for x



Answer is - 12 hours
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