1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
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

You might be interested in
4. Which of the following statements is correct?
Leni [432]

A, four way switches have the word" on" engravedon their hand<em><u>l</u></em><em><u>e</u></em><em><u>s</u></em>

6 0
3 years ago
Read 2 more answers
Crop yield is the ratio of the number of bushels harvested to the number of acres used for the harvest. This year, the harvest a
ivanzaharov [21]

Based on the information given the number of acres that was harvested is  553 acres.

Using this formula

Number of acres=Number of bushels of grain harvested/Bushels per acre

Where:

Number of bushels of grain harvested=94,010 bushels

Bushels per acre=170

Let plug in the formula

Number of acres=94,010/170

Number of acres=553 acres

Inconclusion the number of acres that was harvested is  553 acres.

Learn more about acres here:brainly.com/question/16650739

6 0
2 years ago
McDonalds reports that 15% of their workers are under 18 years old. The best shifts for those under 18 is from
soldi70 [24.7K]

Answer:

iddidij j ju8 u77 u u 7 u 7 h 7 u u u u uuu u 8

6 0
2 years ago
Look at the graph below, which shows the population of the United States from 1790 to 1910. A graph titled U S Population Growth
Mnenie [13.5K]

Answer:

The population of the colonies that later became the United States increased steadily in the decades prior to , and including, the American revolution. The first decennial census took place in 1790 . Since that time, the natural increase, i.e, the excess of births over deaths, has been  a constant contributor to popular growth. The other factor, immigration, has ranged for negligible to large at various points in the nation's history.

After 1830, immigration began to grow again. Although the birth rate showed a decline , the net population growth rate remained high until after the Civil War. In the decade ending 1870,  population growth dropped below 30% for the first time in the nation's history. Substantial immigration kept the population rising at 20% or more for each decade until 1920, when the effect of Word War I reduced it to 14.9% .

5 0
3 years ago
How so lenses of a light microscope make on object look larger?
Dmitry_Shevchenko [17]
<span> Because the lenses are convex or double convex, they bend the light rays, causing them diverge (spread apart). This makes the image bigger..</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • For the equation 2u+v=4, express variable v in terms of u and variable u in terms of v.
    7·2 answers
  • Which sentence does NOT demonstrate a flaw in logic?
    5·2 answers
  • How old is donal trump?​
    8·2 answers
  • Read the information. Pick 5 of the most important ideas/facts from the information and bullet point them.
    5·1 answer
  • How much money does carrie underwood make for sunday night football.
    5·1 answer
  • Sami needs money to pay his tuition fees; as his best friends, we _____________ help him immediately. *.
    11·1 answer
  • Which of the following is a similarity between goods and services.
    6·1 answer
  • You have 2 coins that equal 30 cents one of them is not a quarter
    12·1 answer
  • fill in the blank with the spanish word that best completes the following sentence. pablo es ______________ en el hospital. un p
    8·1 answer
  • The rate constant in an elementary reaction's rate equation can be modeled by the Arrhenius equation: . a. The coefficient A is
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!