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
defon
2 years ago
6

Balancing chemical equations

Chemistry
1 answer:
kolbaska11 [484]2 years ago
7 0

Answer:

2B2 + 3O2 → 2B2O3

Explanation:

Balance The Equation: B2 + O2 = B2O3

1. Label Each Compound With a Variable

  aB2 + bO2 = cB2O3

2. Create a System of Equations, One Per Element

  B: 2a + 0b = 2c

  O: 0a + 2b = 3c

3. Solve For All Variables (using substitution, gauss elimination, or a calculator)

  a = 2

  b = 3

  c = 2

4. Substitute Coefficients and Verify Result

  2B2 + 3O2 = 2B2O3

      L R

  B: 4 4 ✔️

  O: 6 6 ✔️

hope this helps!

You might be interested in
Explain how chemical change differs from a physical change
Grace [21]
A chemical change affects on the molecular level of matter, which makes it irreversible. Combustion is a pretty good exmple. Physical changes are reversible and dont alter the formula. Hope this helped!
8 0
3 years ago
Read 2 more answers
If I added 50 mL of a 1.0 M HCIO2 solution to 50 mL of a 1.0 M NaOH
kozerog [31]

Answer:

pH=7

Explanation:

0.05 L*1.0M= 0.05 mol HClO2  and 0.05 mol NaOH      

HClO2 +     NaOH ---> NaClO2 + H2O

0.05 mol     0.05 mol

As we can see acid and base  react completely,  solution will be neutral, so pH =7

3 0
3 years ago
1.00 L of a gas at STP is compressed to 473mL. What is the new pressure of gas?
Ratling [72]

Hello!

1.00 L of a gas at STP is compressed to 473 mL. What is the new pressure of gas?

  • <u><em>We have the following data:</em></u>

Vo (initial volume) = 1.00 L  

V (final volume) = 473 mL → 0.473 L  

Po (initial pressure) = 1 atm (pressure exerted by the atmosphere - in STP)  

P (final pressure) = ? (in atm)

  • <u><em>We have an isothermal transformation, that is, its temperature remains constant, if the volume of the gas in the container decreases, so its pressure increases. Applying the data to the equation Boyle-Mariotte, we have:</em></u>

P_0*V_0 = P*V

1*1 = P*0.473

1 = 0.473\:P

0.473\:P = 1

P = \dfrac{1}{0.473}

\boxed{\boxed{P \approx 2.11\:atm}}\:\:\:\:\:\:\bf\green{\checkmark}

<u><em>Answer:  </em></u>

<u><em>The new pressure of the gas is 2.11 atm  </em></u>

___________________________________

\bf\blue{I\:Hope\:this\:helps,\:greetings ...\:Dexteright02!}\:\:\ddot{\smile}

3 0
3 years ago
Which stroke is this describing?
iren2701 [21]

Answer:

C. Compression

Explanation:

"...are compressed."

8 0
3 years ago
Read 2 more answers
B. 10% is the correct answer
GarryVolchara [31]
No the right answer is c
5 0
3 years ago
Read 2 more answers
Other questions:
  • The following initial rate data are for the reaction of tertiary butyl bromide with hydroxide ion at 55 oC:
    9·1 answer
  • Which is not a sign of a physical change? *
    10·1 answer
  • if a geologist found two fossils of different species buried next to each other in a rock layer, he or she might hypothezise tha
    8·1 answer
  • Density of Unknown Substance
    12·1 answer
  • Draw the best lewis structure for cl3-. what is the formal charge on the central cl atom?
    15·1 answer
  • Which element in each of the following sets would you expect to have the lowest IE₃?
    12·2 answers
  • Help ASAP!<br> Answer the question and be made the Brainliest
    7·1 answer
  • Which of the following reactions Shows a chemical change producing a gas? APEX
    14·2 answers
  • An aqueous solution of sodium hydroxide is standardized by titration with a 0.170 M solution of perchloric acid. If 28.5 mL of b
    12·1 answer
  • What could be the cause for the large temperature difference in Atlanta and St. Louis? A. A cold front moving southeast
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!