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STALIN [3.7K]
2 years ago
7

Brainiest and 10 Points

Chemistry
2 answers:
Soloha48 [4]2 years ago
8 0

I believe the answer for this is:

C. Visible Light Rays

I hope this helps! :D

Nezavi [6.7K]2 years ago
4 0

Answer:

C, visible light rays :)

Explanation:

Hope i could help

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How many oxygen atoms are in 2(NO3)
torisob [31]

6 Oxygen atoms

Explanation:

In the molecule 2(NO₃):

An atom is the smallest indivisible particle of any substance. They chemically combine to give compounds and molecules. Some of them are able to exist on their own.

An element is a substance that has a unique atom.

      NO₃ has two elements: N   and O

      Number of atoms:

    N = 1

    O = 3

but we have two moles of NO₃

 O = 3 x 2 = 6

 N = 1 x 2 = 2

learn more:

Number of atoms brainly.com/question/10419836

#learnwithBrainly

5 0
2 years ago
What two things lead to genetic variation
vredina [299]

Answer:

Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. Another source is gene flow, or the movement of genes between different groups of organisms. Finally, genetic variation can be a result of sexual reproduction, which leads to the creation of new combinations of genes.

6 0
2 years ago
How much work (in JJ) is required to expand the volume of a pump from 0.0 LL to 2.5 LL against an external pressure of 1.1 atmat
stira [4]

Answer:

- 278.85 J  

Explanation:

Given that:

Pressure = 1.1 atm

The initial volume V₁ = 0.0 L

The final volume V₂ = 2.5 L

The work that takes place in a reaction at constant pressure can be expressed by using the equation:

W = P(V₂ - V₁ )

Since the volume of the gas is expanded from 0 to 2.5 L when 1.1 atm pressure is applied. Then, the work can be given by the expression:

W = - P(V₂ - V₁ )

W = -1.1 atm ( 2.5 - 0.0) L

W = -1.1 atm (2.5 L)

W = -2.75 atm L

Recall that:

1 atm L = 101.4 J

Therefore;

-2.75 atm L = ( -2.75 × 101.4 )J

= -278.85 J  

Thus, the work required at the chemical reaction when the pressure applied is 1.1 atm  = - 278.85 J  

8 0
3 years ago
An element had five valence electrons for bonding. This element is most likely which of the following?
hichkok12 [17]
Atoms in the nitrogen family.
or phosphorus arsenic antimony and bismuth


Have a great day young scientist
3 0
3 years ago
What happens to Earth’s axis of rotation as Earth orbits the Sun?
Margarita [4]

Answer:As the Earth orbits the Sun, the tilt of Earth's axis stays lined up with the North Star. The North Pole is tilted towards the Sun and the Sun's rays strike the Northern Hemisphere more directly in summer. ... The tilt of Earth's axis points away from the Sun.

6 0
3 years ago
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