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
givi [52]
2 years ago
9

2.1 x 10^-3 x 2 x 10^2 =

Chemistry
1 answer:
Bumek [7]2 years ago
4 0

Answer:

I believe it is B

Explanation:

hope it helps. please let me know if it's wrong

You might be interested in
Answer asap? please​
loris [4]

Ok heres what i know, one of the reasons why visible light will pass through glass but not through other materials is because the molecules in glass require more energy than average to push electrons from one level to another. Photons in visible light simply do not have enough energy. Only photons of light with shorter wavelengths, such as those that make up ultraviolet light, have the ability to change the electrons in glass. This is why ultraviolet light is unable to pass through glass. Lol im in 6th grade this is all i know ! :)

8 0
3 years ago
What is the main difference between a generator and an electric motor? _______
garri49 [273]

Answer:

A generator produces electricity and an electric motor consumes electricity

4 0
2 years ago
Read 2 more answers
Which of the following is a combustion reaction?
Rina8888 [55]
The answer is b it is a combustion reaction
7 0
3 years ago
CaCO3 For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with pH. If the
Slav-nsk [51]

Answer:

Hello attached below is the data found in Aleks Data tab

answer :

i) N0

ii) N0

iii) YES ,  pH of highest solubility = 5

Explanation:

i) For CuBr

solubility does not change with pH  hence answer = NO

ii) For MgCl2

solubility does not change with pH hence the answer = NO

iii) For Ba(OH) 2

Solubility does change with pH hence the answer = YES

and the pH at which the highest solubility will occur is = 5

attached below is the reason for the answers given

4 0
3 years ago
Compare the type of change that occurs when an iron bar rusts and when a substance freezes.
Ivanshal [37]

Explanation:

when an iron bar rust is an example of a chemical change in which a new substance is formed and the change is not easily reversible.for iron to rust moisture and air must be present.while when a substance freezes,it can be easily reversed through melting and no new substance is formed.this change is termed a physical change.

5 0
2 years ago
Other questions:
  • Ozone _____.
    8·2 answers
  • The electronegativity of nitrogen (N) is 3.0, while the electronegativity of hydrogen (H) is 2.1. Knowing this, consider how the
    12·1 answer
  • What is the molar mass of a compound if 25.0 g of the compound dissolved in 750. Ml gives a molarity of 0.290 m?
    13·1 answer
  • Which element has the HIGHEST ionization energy? (Hint: it's hardest to remove an electron from this element)
    15·2 answers
  • A Transverse Wave is what
    10·1 answer
  • Reaction of hypochlorous acid and ammonia is product-favored system at equilibrium. Answer A: Reaction of hypochlorous acid and
    15·1 answer
  • If gold is selling presently for $1000.00/oz how much would 1 cubic inch of gold be worth?
    8·1 answer
  • Explain why caesium is more reactive than sodium.<br> You should answer in terms of electrons.
    6·1 answer
  • Pls help me with my chemistry finals test.
    9·1 answer
  • During action potential, positively charged ________ ions move inside the cell.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!