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
gregori [183]
3 years ago
7

Which is an example of a chemical change?

Chemistry
2 answers:
asambeis [7]3 years ago
4 0

Answer:

Example: Burning wood

Souring milk

Mixing acid and base

Baking a cake

Explanation:

Chemical changes occur when a substance combines with another to form a new substance.

Example: Burning wood

Souring milk

Mixing acid and base

Baking a cake

FromTheMoon [43]3 years ago
3 0
Burning wood
dissolving salt in water
<span>mixing acid and base</span>
You might be interested in
Which increases the rate of a chemical reaction?
Anastasy [175]
A catalyst

A catalyst can be in many forms
3 0
3 years ago
How many moles of oxygen are produce dif 11.0 mol of al are produced
ycow [4]

Answer:

8.25 moles

Explanation:

Given parameters:

Number of moles of Al produced = 11 moles

Unknown:

Number of moles of oxygen produced = ?

Solution:

To solve this problem, we need to understand the problem.

The decomposition of an aluminium oxide must has produced oxygen and aluminium,

              2Al₂O₃   →  4Al  + 3O₂

now since the known is the oxygen gas; we can find the unknown aluminium:

                3 mole of O₂ was produced with 4 mole of Al

               x mole of O₂ will be produced with 11 moles of Al

 x  = \frac{3 x 11}{4}  = 8.25 moles

7 0
3 years ago
Objects that vibrate make energy. Which
kap26 [50]

Answer:

A sound

Explanation:

7 0
3 years ago
Read 2 more answers
What is the percent yield for a chemical reaction if the actual yield is 36 g and the theorical yield is 45 g.
SpyIntel [72]

Answer:

⇒ Percent yield = 80 %

Explanation:

Given:

Actual yield = 36 g

Theoretical yield = 45 g

Find:

Percent yield

Computation:

⇒ Percent yield = [Actual yield / Theoretical yield] 100%

⇒ Percent yield = [36 / 45] 100%

⇒ Percent yield =[0.8] 100%

⇒ Percent yield = 80 %

4 0
3 years ago
Determine whether each description represents a genotype or a phenotype.
ANEK [815]

Answer:

phenotype,phenotype,genotype,genotype,

genotype

Explanation:

phenotype is physical appearance and genotype is just like

yy Tt

8 0
4 years ago
Read 2 more answers
Other questions:
  • What would be the mass of 1.98×10^28 molecules of H2O
    9·2 answers
  • Which activity is an example of poor personal hygiene
    12·2 answers
  • For the reaction MgSO3(s) → MgO(s) + SO2(g), which is spontaneous only at high temperatures, one would predict thata. ΔH˚ is neg
    12·1 answer
  • The _______ is the total number of organisms that an ecosystem can support.
    10·2 answers
  • There is a gas at 780 mm of Hg, in a volume of 5 liters and a temperature of 37 ​ C, the volume is changed to 5.5 liters and the
    7·1 answer
  • Draw the Lewis structure of AlF₄⁻
    15·1 answer
  • What coefficient for O2 demonstrates the law of conservation of mass?
    14·1 answer
  • What is the difference between the solid line and the dotted line?
    6·1 answer
  • G= 10N/Kg
    9·1 answer
  • Can someone help? <br><br> Name the compound:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!