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
Butoxors [25]
3 years ago
10

HELPP

Chemistry
1 answer:
slamgirl [31]3 years ago
7 0

Answer:

In the previous section, we discussed the relationship between the bulk mass of a substance and the number of atoms or molecules it contains (moles). Given the chemical formula of the substance, we were able to determine the amount of the substance (moles) from its mass, and vice versa. But what if the chemical formula of a substance is unknown? In this section, we will explore how to apply these very same principles in order to derive the chemical formulas of unknown substances from experimental mass measurements.

Explanation:

tally. The results of these measurements permit the calculation of the compound’s percent composition, defined as the percentage by mass of each element in the compound. For example, consider a gaseous compound composed solely of carbon and hydrogen. The percent composition of this compound could be represented as follows:

\displaystyle \%\text{H}=\frac{\text{mass H}}{\text{mass compound}}\times 100\%%H=

mass compound

mass H

×100%

\displaystyle \%\text{C}=\frac{\text{mass C}}{\text{mass compound}}\times 100\%%C=

mass compound

mass C

×100%

If analysis of a 10.0-g sample of this gas showed it to contain 2.5 g H and 7.5 g C, the percent composition would be calculated to be 25% H and 75% C:

\displaystyle \%\text{H}=\frac{2.5\text{g H}}{10.0\text{g compound}}\times 100\%=25\%%H=

10.0g compound

2.5g H

×100%=25%

\displaystyle \%\text{C}=\frac{7.5\text{g C}}{10.0\text{g compound}}\times 100\%=75\%%C=

10.0g compound

7.5g C

×100%=75%

You might be interested in
Gas bubbles form when baking soda and vinegar react
user100 [1]
Yes! Becuz baking soda is strong and if you mix it with any liqued  it makes BUBBLES
6 0
3 years ago
How would you abbreviate you as an element?​
qaws [65]

Answer:

i am unique and have a specific number in the periodic table

5 0
3 years ago
Are my answers correct?
olga_2 [115]

Answer: yes

Explanation: its common sense

6 0
2 years ago
12. Organelles allow eukaryotic cells to carry out more functions than prokaryotic cells.
deff fn [24]

Answer:

True po

Explaination :

I hope it helps

4 0
3 years ago
Read 2 more answers
Which determines the frequency of a sound wave? A the intensity of the sound waves B the rate at which the sound source is vibra
andreyandreev [35.5K]

Answer:

b

Explanation:

The number of vibrations per second is known as the frequency

7 0
3 years ago
Read 2 more answers
Other questions:
  • The embryo refers to an undeveloped animal or plant.<br><br><br> True or false
    9·2 answers
  • How many kJ of heat are required to melt 35.0 g of ice?
    15·1 answer
  • Which object has the lowest density <br><br>beach ball<br><br>water<br><br>sand​
    9·1 answer
  • A(n) ____________ is a variety of an element with the same number of protons and electrons as the other types of the element but
    5·1 answer
  • What kind of signals does nerve tissue use to convey information?
    11·1 answer
  • How is hydrogen in heavy water different from hydrogen in normal water?
    5·2 answers
  • The system of electrons surrounding the nucleus of an atom
    13·1 answer
  • The diagram is a model of one way that materials move into a cell.
    7·2 answers
  • Look up and compare the ionic radii of In3+, Mn3+, and Y3+ for a specific coordination number. Why do you think Mn3+ forms a sol
    10·1 answer
  • What is the name of this molecule?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!