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
nordsb [41]
3 years ago
13

Which of these provides evidence that a chemical reaction occurs?

Chemistry
1 answer:
harkovskaia [24]3 years ago
7 0

Answer:

Color change, Temprature change, Odor change, Effervescence (Bubbles)

Explanation:

You might be interested in
How do you write a balanced equation for the combustion<br> ofbenzene?
forsale [732]

Answer: The balanced chemical equation for the combustion of benzene is:

2C_6H_6+15O_2\rightarrow 12CO_2+6H_2O

Explanation:

Combustion reactions : It is defined as the reactions in which a hydrocarbon reacts with oxygen gas to produce carbon dioxide and water as a product.

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

The balanced chemical equation for the combustion of benzene will be:

2C_6H_6+15O_2\rightarrow 12CO_2+6H_2O

By Stoichiometry of the reaction we can say that,

2 mole of benzene reacts with 15 moles of oxygen gas to produce 12 moles of carbon dioxide and 6 moles of water molecule.

4 0
3 years ago
Which process is a chemical change
hichkok12 [17]
The process of a chemical change is when it occur when a substance called chemical synthesis or alternatively chemical decomposition into two or more different substances
5 0
3 years ago
Read 2 more answers
What happens as a liquid freezes?
marishachu [46]

Answer:

A

Explanation:

When molecules speed up, they become excited and create friction that is transformed into heat, do when an abject cools, the molecules slow down and thus for have less friction.

3 0
3 years ago
What is a hypothesis?
raketka [301]
An explanation or answer based on the facts or evidence you have.
5 0
3 years ago
Read 2 more answers
According to the diagram below, a bacterial cell does not contain
Pavlova-9 [17]

Answer:

nucleus

Explanation:

3 0
2 years ago
Other questions:
  • When 100 mL of 1.0 M Na3PO4 is mixed with 100 mL of 1.0 M AgNO3, a yellow precipitate forms and [Ag ] becomes negligibly small.
    11·1 answer
  • Bacteria and fungi break down organisms into nutrients. They are known as
    10·1 answer
  • Which substance is most likely to break easily into many smaller pieces ?
    6·2 answers
  • How many moles of oxygen would it takie to produce 8 moles of carbon dioxide?​
    14·2 answers
  • A sample of water with a mass of 587.00 kg is heated with 87 kJ of energy to a temperature of 518.4 K. The specific heat of wate
    8·1 answer
  • What is the percent composition of tungsten​
    14·2 answers
  • Significant figures ​
    12·1 answer
  • What are examples of covalent substances?
    8·1 answer
  • 21 III
    12·2 answers
  • Why did the mass of the apple<br> change (based on the chemical<br> reaction and data table)?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!