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
iragen [17]
3 years ago
14

There is more energy after a chemical reaction than before the reaction. true or false

Chemistry
2 answers:
d1i1m1o1n [39]3 years ago
6 0

It stays the same because a Chemical reaction has nothing to do with energy so the answer would be. False

s2008m [1.1K]3 years ago
5 0
It depends on the kind of reaction.
In Endothermic reaction, energy is more before reaction than after reaction.

In Exothermic reaction, energy is less before reaction than after reaction.
You might be interested in
If two atoms have an electronegativity difference of 1.3, what type of bond would form between them?
Debora [2.8K]

Answer:

The correct answer is b polar covalent

Explanation:

When two atoms joined by covalent bond has difference in their electronegativities at that time polarity arise.

    When the electronegativity difference is low such as 1.3 then the polar bond formed by the two atoms are called polar covalent bond.For example H2O

 on the other hand polar bond formed by two atoms having high difference in their electronegativities is called ionic bond.For example NaCl.

5 0
3 years ago
Read 2 more answers
CLIOT
zhuklara [117]
The many electron diamonds around the central carbon are 1689
6 0
3 years ago
How many moles are equal to 3.0x10^23 atoms of germanium? PLS ANSWER WITH WORK!
horrorfan [7]
1 mole=6.02 x 10^23 atoms so how many moles are there in 3.0 x 10^23 we will cross multiply, 1 x 3.0 x 10^23 / 6.02 x 10 ^23. Which will give us 0.498 moles.
Hope this helped
6 0
2 years ago
Assume that coal can be represented by the chemical formula C135H96O9NS. If 4.0 tons of coal is burned, what mass of nitrogen is
Schach [20]

Answer:

0.02 tons of NO produced when 4 tons of coal is burned

Explanation:

From the given,

Chemical formula of coal =  C_{134}H_{96}O_{9}NS

Molecular mass of coal = (134\times12)+(9\times1)+(9\times16)+14+32\,=1906.1gm

Let’s calculate the mass of nitrogen in coal

Percentage\,weight\,of\,nitrogen=\frac{Mass\,of\,nitrogen}{Molecular\,mass\,of coal}

Percentage\,weight/,of/,nitrogen=\frac{14}{1906.1}=0.73%

Amount of coal burnt = 4tons

Amount of NO produced by burning 4tons = 4\,tons\,of\,coal\times \frac{0.73tons}{100\,tons\,of\,coal}=0.0292\,tons

This nitrogen is converted into NO by reacting with atmospheric oxygen.

8 0
3 years ago
Read 2 more answers
Deforestation affects which of the following?
finlep [7]

Answer:

water cycle and carbon cycle

5 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the mean of 2, 5 and 3. write your answer to 2 decimal places. please help me on this
    12·1 answer
  • Any suggestions or answers
    9·1 answer
  • Can someone help, like I need an answer now ಥ‿ಥ​
    14·1 answer
  • Rxn
    7·1 answer
  • What factors are included on a phase diagram?
    13·1 answer
  • A gas occupies a volume of 67.54 liters at 158°C and 4.87 atm pressure. Calculate the number of moles of this gas.
    12·1 answer
  • How much mass do 2.0 moles of uranium contain
    8·1 answer
  • Is cotton a synthetic material or a natural material? and why not​
    15·1 answer
  • Increase the pressure on the system
    5·1 answer
  • What is the percent of Heterozygous rabbits
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!