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
Cerrena [4.2K]
3 years ago
9

What do the coefficients located before certain molecules in each chemical equation represent?

Chemistry
1 answer:
olga55 [171]3 years ago
6 0
It represents the number of moles required of that molecule to balance the chemical equation, which means to have the reaction chemically happen and goes to completion.

For example:
CH4 + O2 --> H2O + CO2     that is not balanced

with the coefficients located
CH4 + 2O2 --> 2H2O + CO2    now with the coefficients the number of oxygen and hydrogen on each side are equal
You might be interested in
What is the name of GaF3?
Ksivusya [100]

Answer:

Gallium III fluoride (pretty sure)

Explanation:

3 0
3 years ago
What is the sum of 2.7 g and 2.47g expressed in the correct number of significant digits
NeTakaya
In order to get the sum of 2.7 and 2.47, we will add both numbers. So, 2.7 plus 2.47 would be 5.17. And the correct number of significant digits in this number is still the same, 5.17, so we have three significant numbers. Why? There are three rules in identifying the significant figures: 1. Non zeros are always significant (which this applies in our sum above). 2. Any zeros in between significant numbers are always significant. 3. <span> The final zero or zeros in the decimal portion only are significant.</span>
5 0
2 years ago
Read 2 more answers
Define velocity and state what it is meant by uniform acceleration
Arlecino [84]

Velocity- It is basically the speed of an object but with a particular direction.

Uniform Acceleration- It is a type of motion in which the velocity of a object changes by an equal amount in every equal period of time.

7 0
3 years ago
The label shown above contains information about some harmful effects of acetone.A group of students plans to use acetone to rin
Fed [463]

Answer:

<u>Heating water with an open flame</u>

<u>Explanation:</u>

Remember, we are told in the label that Acetone is a "flammable liquid and vapor." <em>Being flammable means the substance can easily be set on fire</em>, and we would expect an open flame from heating water to trigger an explosion (a disaster) in which the Acetone is set on fire causing life-threatening dangers to the second group of students.

8 0
3 years ago
The molar heat of vaporization of hydrogen fluoride (HF) is 31.18 kJ/mol. How much heat is released when 100.0 g HF condenses at
mash [69]

the answer is -155.8


8 0
3 years ago
Read 2 more answers
Other questions:
  • How many oxygen molecules are in 22.4 liters of oxygen gas at 273 K and 101.3 kPa
    9·2 answers
  • Which of the following is a possible set of quantum numbers for an electron
    12·1 answer
  • Is this statement true or false? Ammonia is a base. A. True B. False
    11·2 answers
  • As a result of the transfer of an electron from a less electronegative atom to a more electronegative atom,
    11·1 answer
  • I'll give the first person with all the correct answers brainliest
    8·2 answers
  • How much percent of energy presents at one level is available to the next trophic level
    12·1 answer
  • Help!
    9·1 answer
  • Juan created a chart to help him study for a test.
    7·2 answers
  • How were scientists able to study the center of the Earth
    9·1 answer
  • Check all reasons why a book was used.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!