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
IrinaK [193]
3 years ago
13

Need help with cemester​

Chemistry
1 answer:
sladkih [1.3K]3 years ago
6 0

Answer:

See explanation

Explanation:

20 = B

21 = C

22 = D

23 = B

24 = B

25 = C

You might be interested in
39. Consider the following molecules:
sweet [91]
I) cc14
ii) h20
iii) i’m not sure

not fully sure but hope this helps!
5 0
3 years ago
chegg write a net ionic equation describing the oxidation of no2 2 to no3 2 by o2 in a basic solution.
Marina86 [1]

When the same species undergoes both oxidation and reduction in a single redox reaction, this is referred to as a disproportionation. Therefore, divide it into two equal reactions.

NO2→NO^−3

NO2→NO

and do the usual changes

First, balance the two half reactions:

3. NO2 +H2O →NO^−3 + 2 H^+ + e−

4. NO2 +2 H^+ + 2e− → NO + H2O

Now multiply one or both half-reactions to ensure that each has the same number of electrons. Here, Eqn (3) x 2 results in each half-reaction having two electrons:

5. 2 NO2 + 2 H2O → 2 NO^−3 + 4H^+ + 2e−

Now add Eqn 4 and 5 (the electrons now cancel each other):

3NO2 + 2H^+ + 2H2O → NO + 2 NO−3 + H2O + 4H+

and cancel terms that’s common to both sides:

3NO2 + H2O → NO + 2NO^−3 + 2H+

This is the net ionic equation describing the oxidation of NO2 to NO3 in basic solution.

Learn more about balancing equation here:

brainly.com/question/26227625

#SPJ4

7 0
1 year ago
200.0 mL of water is added to 300.0 mL of 3.78 M LiClO3, what is the concentration of the resulting solution?
Kamila [148]
Molarity = number of moles/Volume (L). Solve for the number of moles in the initial solution (3.78M = n/0.3 L) and then use that amount of moles and the new volume (0.5 L) to solve for the new Molarity.
4 0
3 years ago
Water in the atmosphere is a gas. When the air cools, water may condense into clouds. Then it may become a liquid or a solid and
Maksim231197 [3]

Answer:

A precipitation is answer

4 0
2 years ago
Michael has a substance that he puts in Container 1. The substance has a volume of 5 cubic meters He then puts
xxMikexx [17]

Answer:

gas is the correct answer.

Explanation:

8 0
2 years ago
Other questions:
  • If Plank's constant is 6.6 x 10(-34) J/Hz, then what is the approximate frequency of a photon having an energy of 3 x 10(-19) Jo
    11·1 answer
  • What information is required to calculate the average atomic mass of an element?
    10·1 answer
  • What atom has 5 neutrons 4 protons and 2 electrons
    8·1 answer
  • I need an answer ASAP
    8·1 answer
  • 10. If 3.5 kJ of energy are added to a 28.2 g sample of iron at 20°C, what
    9·1 answer
  • In which of the following is the number of neutrons correctly represented
    14·1 answer
  • Who knows any four object in which all three States of matter co-exist​
    15·2 answers
  • A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a galvanic cell constructed with a
    14·1 answer
  • Look at the dots around each symbol and the energy levels from the resources above;
    15·1 answer
  • In a person's body, sulfur oxides combine with water vapor in the BLANK to form sulfuric acid.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!