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
Anna11 [10]
3 years ago
15

What is the percent by mass of oxygen in ca(oh)2? [formula mass = 74.1]

Chemistry
2 answers:
andre [41]3 years ago
8 0
16(2)/74.1=.431

.431x100= 43.1%
finlep [7]3 years ago
8 0

Answer:

43.18%

Explanation:

To calculate the percentage by mass of oxygen in the compound, multiply the atomic mass of oxygen by two. This is done because the compound contains two moles of oxygen.

16*2=32

32 divided by the formula mass as given in the question multiplied by 100 gives 43.18%

You might be interested in
PLEASE HELP ASAPP!!!!! WILL MARK BRAINLIEST
Aloiza [94]

Answer:

400°C

Explanation:

22,000 cal / (0.11 cal/g°C x 500 g) = 400°C

3 0
2 years ago
Read 2 more answers
Which of the following units is best when measuring the length of an object?
podryga [215]

Answer:metres

Explanation:It would be best to measure the length of an object in metric system such as millimeter, centimeter, mere etc..

8 0
3 years ago
Read 2 more answers
5-Etil-4-4- isobutil -7,7-Dimet nonano
Mazyrski [523]

Answer:

I have no clue what the question is

5 0
2 years ago
What is one advantage of using a computer over a graphing calculator?
gayaneshka [121]
Among the given choices, the right statement is that computers are advantageous because it holds a larger amount of data over graphing calculators. Calculators are easier to transport and has lower power consumption. Answer here is D. 
6 0
2 years ago
Read 2 more answers
I've been waiting for like 10 mins. Please answer this.
Degger [83]

The answer is B. 6CO2+H2O yields C6H12O6+ 6H20.

3 0
2 years ago
Read 2 more answers
Other questions:
  • List at least three properties of matter.
    13·2 answers
  • What is the mass of 0.5 moles of carbon tetrafluoride, CF4?
    12·2 answers
  • The ionic equations represent the reactions between four metals, P, Q, R and S, and solutions of the salts of the same metals
    6·1 answer
  • In the spectrophotometric analysis of benzene, the calibration curve has a slope of 195 AU/M and an intercept of 0.079 AU. If an
    10·1 answer
  • As a medication, Chang's doctor prescribed him a drug with serious restrictions. However, Chang started overdosing on it. This a
    7·1 answer
  • Which chemical change ? A.boiling B.freezing C.burning D.melting
    5·2 answers
  • How many grams of oxygen, O 2 , is consumed when 41.9 g of propane, C 3 H 8 , burns?
    8·1 answer
  • 10. Which of the following consists of two or more pure substances?
    7·1 answer
  • HELP PLEASE!!!!! <br> show work
    11·1 answer
  • A grade 8 students burnt white phosphorus in the air contained in a bell jar. what will be the volume of the renaming air in the
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!