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melisa1 [442]
3 years ago
11

What makes hydrogen peroxide a polar molecule?

Chemistry
2 answers:
Katen [24]3 years ago
8 0

Answer:

c

Explanation:

kupik [55]3 years ago
7 0
  <span>C. polar bonds and asymmetrical structure 
If the molecule contains polar bonds but it has a symmetrical structure, the polar bonds will cancel each other out so the overall molecule will be non-polar. 
On the other hand, if the molecule contains polar bonds but has an asymmetrical structure, then the polar bonds won't cancel each other out, so the overall molecule ends up being polar. 
</span>
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An electron in a hydrogen atom drops from energy level e3 to e2. what's the frequency of the emitted photon
castortr0y [4]
For this problem we can use 2 equations.
(1) - E = mC²
          E = Energy of photon (J)
          m = Mass of photon (kg) (1.67x10⁻²⁷ kg)
          C = speed of light (3 x 10⁸ m/s)

(2) - E = hf
        E = Energy of photon (J)
        h = plank's constant (6.63 × 10⁻³⁴<span>J s)
        f  = frequency of the photon (Hz)

(1) = (2)
hence, </span>mC² = fh                
                
by rearranging, 
                f =  mC² / h 
                f  =  1.67x10⁻²⁷ kg * (3 x 10⁸ m/s)² / (6.63 × 10⁻³⁴J s)
              f    = 2.27 x 10²³ Hz            
3 0
3 years ago
The reaction below shows a system in equilibrium.
Marrrta [24]

The given question is incomplete, here is a complete question.

The reaction below shows a system in equilibrium.

H_2(g)+I_2(g)+Heat\rightarrow 2HI(g)

How would a decrease in temperature affect this reaction?

A. The rate of formation of the gases would increase.

B. The equilibrium of the reaction would shift to the left.

C. The equilibrium would shift to cause the gases to sublime into solids.

D. The chemicals on the left would quickly form the chemical on the right.

Answer : The correct option is, (B) The equilibrium of the reaction would shift to the left.

Explanation :

The given reaction is endothermic reaction.

For an endothermic reaction, heat is getting absorbed during a chemical reaction and is written on the reactant side.

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle. This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

As, heat is getting absorbed during a chemical reaction. This means that temperature is getting increased on the reactant side.

If the temperature in the equilibrium is decreased, the equilibrium will shift in the direction where, temperature is getting increased. Thus, the reaction will shift in left direction that is towards the reactants.

Hence, the correct option is, (B) The equilibrium of the reaction would shift to the left.

4 0
3 years ago
15. An electrically neutral atom consists of 15 neutrons, 13 electrons, and a number of protons. What is its mass number?​
Korvikt [17]

Answer:

28

Explanation:

it states that the atom is neutral, meaning the number of electrons and protons are the same. so if there are 13 electrons, there are 13 protons. And the mass number is neutrons plus protons. So 13+15 is 28

4 0
3 years ago
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5 0
4 years ago
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