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pickupchik [31]
3 years ago
6

Answer 14 and 18 please

Chemistry
1 answer:
Allushta [10]3 years ago
4 0
14 is C but I cannot see the other one
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Which of the following statements correctly relates mutations and survival rates of plants?
Tasya [4]
Answer is: <span>Mutations sometimes improve the chances of survival for a plant.
</span>Mutations are very important because they change <span>variability in populations and in that way enable evolutionary change.
</span>There are three types of mutations:
1) good or advantageous mutations - <span> improve the chances of survival for a plant.
2) </span>bad or deleterious - decrease the chances of survival for a plant.
3) neutral -  not affect he chances of survival for a plant.
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4 years ago
Check out this app! It's millions of students helping each other get through their schoolwork. https://brainly.app.link/qpzV02Ma
marishachu [46]

Answer:

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Explanation:

8 0
3 years ago
Charlie the Chemist heats a 62.51 g piece of copper from 22.9°C to 345.0°C. Calculate the amount
Ivanshal [37]
  • Mass=m=62.51g
  • Initial temperature=T_i=22.9°C
  • Final temperature=T_f=345.0°C
  • Specific heat of copper=0.0920cal/g°C
  • ∆T=T_f-T_i=345-22.9=322.1°C

\\ \tt\hookrightarrow Q=mc\Delta T

\\ \tt\hookrightarrow Q=62.1(0.0920)(322.1)

\\ \tt\hookrightarrow Q=1840.22172cal

\\ \tt\hookrightarrow Q=1840.222cal

\\ \tt\hookrightarrow Q=1840.2cal

6 0
3 years ago
A mole is equal to 6.02 x 10²³, just like a dozen is equal to 12. So if you have a mole of carbon atoms, you have 6.02 x 10²³ ca
Lyrx [107]
You must perform stoichiometry! always divide by what you already have (this will make since in a moment)

5.2g Carbon | 1 mole/12.01g/mole | 6.02 x 10^23 atoms/1 mole | = atoms in Carbon

above is the basic stoichiometry set up but your calculation should be (5.2g/12.01g) x (6.02 x 10^23) = 2.61 x 10^23 atoms
6 0
4 years ago
Which chemical equation demonstrates the law of conservation of mass!
zlopas [31]

Answer:

F. 2NO + 02 —> 2NO

H. 4NH3 + 502 —> 4NO + 6H20

Explanation:

The law of conservation of mass states that matter can neither be created nor destroyed during a chemical reaction but can be convert from one form to another.

2NO + 02 —> 2NO

From the above, the total number of N on the left balance the total number on the right i.e 2 atoms of N on both side of the equation.

The total number of O on the left balance the total number on the right i.e 2 atoms of O on both side of the equation. This is certified by the law of conservation of mass.

4NH3 + 502 —> 4NO + 6H20

From the above, the total number of N on the left balance the total number on the right i.e 4 atoms of N on both side of the equation.

The total number of O on the left balance the total number on the right i.e 10 atoms of O on both side of the equation.

The total number of H on the left balance the total number on the right i.e 12 atoms of O on both side of the equation.

This is certified by the law of conservation of mass.

The rest equation did not conform to the law of conservation of mass as the atoms on the left side did not balance those on the right side

5 0
3 years ago
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