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
expeople1 [14]
2 years ago
12

Which of the following statements is true about what happens during a chemical reaction?

Chemistry
2 answers:
Alika [10]2 years ago
6 0

The correct answer is A. Bonds of the reactants are broken, and bonds of the products are formed.

tiny-mole [99]2 years ago
5 0

Answer: The correct option is A.

Explanation: In a chemical reaction, reactants react to form a number of products.

For the formation of products, the bonds of the individual reactants must be broken and the bonds of the products must be formed.

For example: Formation of water from hydrogen gas and oxygen gas. Reaction follows:

2H_2(g)+O_2(g)\rightarrow 2H_2O(l)

The Bonds of hydrogen and oxygen molecule are broken and new bonds between hydrogen and oxygen atoms are formed to give water molecule.

You might be interested in
Can somebody in 8thgarde help me with Examining Molecules and compounds ?
MakcuM [25]
I might be able to. I am in 8th grade science.

5 0
3 years ago
You have just isolated a new radioactive element. If you can determine its half-life, you will win the Nobel Prize in physics. Y
lbvjy [14]

Answer: 2.58 days

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = ?

t = age of sample  = 6 days

a = initial amount of the reactant  =  1 g

a - x = amount left after decay process   = 0.2 g

a) to find the rate constant

6=\frac{2.303}{k}\log\frac{1.0}{0.2}

k=\frac{2.303}{6}\log\frac{1.0}{0.2}

k=0.268days^{-1}

b) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

t_{\frac{1}{2}}=\frac{0.693}{0.268}=2.58days

The half life is 2.58 days

3 0
3 years ago
What things typically are counted in multiples or fractions of moles
ololo11 [35]

Answer:

Individually well, defined identical chemically units such as molecules, ions, atoms, or electrons

Explanation:

The mole is used as the unit of measurement for substance such as molecules, ions, atoms, or electrons. One mole of a substance is equivalent to 6.02×10²³ particles of the substance. The number, 6.02 × 10²³ is known as Avogadro's number.

The particles quantified as moles are individually well, defined identical chemically units such that the mole can be used to describe a part of a substance or the whole substance consisting of several moles of the substance combined.

7 0
3 years ago
What happens when an electron in its lowest energy level or ground state when it is by absorbs energy?
tester [92]

Explanation:

atom changes from a ground state to an excited state by taking on energy from its surroundings in a process called absorption. The electron absorbs the energy and jumps to a higher energy level. In the reverse process, emission, the electron returns to the ground state by releasing the extra energy it absorbed

8 0
3 years ago
Mrs. Sikora purchases chlorpheniramine over-the-counter for her allergies. Which side effect would Mrs. Sikora likely experience
galina1969 [7]

Answer:

drowsiness

Explanation:

4 0
2 years ago
Other questions:
  • DEFINE THESE WORDS FOR A TON OF POINTS!!!!!!!
    13·1 answer
  • How are rechargeable batteries recharged? a. Adding new reactants c. Passing electric charge through the reactants b. Changing t
    13·1 answer
  • Miranda gets a small cut on her thumb after she breaks a beaker, and she begins to look around for the lab first aid kit. What i
    11·2 answers
  • What is stratosphere
    13·1 answer
  • Which of the isomeric alcohols having the molecular formula c5h12o are chiral which are achiral?
    11·2 answers
  • Is this true or false ?
    12·2 answers
  • Why is an atom regarded as electrically unstable​
    10·1 answer
  • Why can iron filings be used to visualize a magnetic field?
    7·1 answer
  • What classifies a substance as an element?
    11·1 answer
  • Which of the following is a strong acid?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!