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
mojhsa [17]
2 years ago
9

18.Which shows chemical weathering?

Chemistry
2 answers:
lakkis [162]2 years ago
8 0

Answer:

18:A

19:C

20:D NOT SURE

22:A

24:B

saveliy_v [14]2 years ago
4 0

Explanation:

18 A

19 C

20 C

22 A

24 B

hope this helps you.

You might be interested in
If you stirred some sugar in water the sugar would disappear but the water would taste sweet. This is because __________ change
olganol [36]

a hopefully this is helpful

7 0
2 years ago
Why did you get that wrong?
victus00 [196]

Answer:

Got what wrong? A question?

5 0
2 years ago
How many formula units are in 239.2g of <br> Br2<br> MgCl2<br> H2O<br> Fe
Oksana_A [137]

The formula units in the substances are as follows:

  • Br2 = 8.99 × 10^23 formula units
  • MgCl2 = 1.51 × 10^24 formula units
  • H2O = 2.57 × 10^24 formula units
  • Fe = 2.57 × 10^24 formula units

<h3>How many moles are in 239.2 g of the given substances?</h3>

The moles of the substances are determined from their molar mass.

Molar mass of the substances is given as follows:

  • Br2 = 160 g/mol
  • MgCl2 = 95 g/mol
  • H2O = 18 g/mol
  • Fe = 56 g/mol

Formula units = mass/molar mass × 6.02 × 10^23

The formula units in the substances are as follows:

  • Br2 = 239.2/160 × 6.02 × 10^23 = 8.99 × 10^23 formula units
  • MgCl2 = 239.2/95 × 6.02 × 10^23 = 1.51 × 10^24 formula units
  • H2O = 239.2/18 × 6.02 × 10^23 = 2.57 × 10^24 formula units
  • Fe = 239.2/56 × 6.02 × 10^23 = 2.57 × 10^24 formula units

In conclusion, the number of formula units is derived from the moles and Avogadro number.

Learn more about formula units at: brainly.com/question/24529075

#SPJ1

6 0
2 years ago
Which expressions are equal to 675? 700 – 25 O 700 – 75 O 600 + 75 O 634 + 31 500 275​
ser-zykov [4K]

Answer:

30

Explanation:

6 0
2 years ago
Read 2 more answers
A structural model of retinol is shown below. How many hydrogen atoms are
Nikitich [7]

Answer:

A. 30

Explanation:

Retinol is the chemical form of Vitamin A. It has a chemical formula of C20H30O.

It is processed when retinyl palmitate is broken down in the small intestine. Retinol helps in the proper regulation of eye cells hence a vital component in ensuring good eye sight.

It also helps in the neutralization of free radicals in the body and acts as an antioxidant which prevents cells of the body from ageing.

7 0
2 years ago
Other questions:
  • Propose a structure for the first intermediates in the reaction of 1,3-bisphosphoglycerate with a thiol group on the enzyme to f
    10·1 answer
  • What is a compound in chemistry
    11·1 answer
  • The distance between Earth and its moon is 384000000 meters. Express this distance in kilometers.
    6·1 answer
  • Which of the following is not an indication of a chemical reaction?
    5·2 answers
  • A triple covalent bond involves two atoms sharing three pairs of electrons. True or False
    9·1 answer
  • Magnesium +Hydrogen Phospahate
    12·2 answers
  • The transfer of energy that occurs when a force is applied over a distance is
    15·1 answer
  • The growth of the plants that the animal used for food could not keep up with the needs of the population. There was so little f
    11·2 answers
  • Oxidation of methane
    15·1 answer
  • When 50 cm³ of hydrocarbon Y is burnt, it reacts with exactly 300 cm³ of oxygen to form 200 cm³ of carbon dioxide. Water is also
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!