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siniylev [52]
3 years ago
15

What is the original source of most energy used on Earth?

Chemistry
2 answers:
Vlada [557]3 years ago
6 0

Answer:

the sun Solar energy

Explanation:

Energy from the sun. Solar energy is the original source of most energy on Earth. There are many ways we use energy from the Sun. btw hope this helps u out =)

ser-zykov [4K]3 years ago
3 0

Answer:

the sun Solar energy

Explanation:

Energy from the sun. Solar energy is the original source of most energy on Earth. There are many ways we use energy from the Sun.

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Plz help!!!!!!!!!!!!!!
Karo-lina-s [1.5K]
I think it’s d
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5 0
3 years ago
Read 2 more answers
If you have 2L of a solution with 6 moles of HCl in it, what is the molarity of it?
Vladimir [108]

Answer:

Molarity = 3 M

Explanation:

Given data:

Volume of solution = 2 L

Number of moles of HCl = 6 mol

Molarity = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

Molarity = 6 mol / 2 L

Molarity = 3 M     (M = mol/L)

7 0
3 years ago
If the pressure of the reactants increase, What happens to the product.
EastWind [94]

Increasing the pressure on a reaction involving reacting gases increases the rate of reaction. Changing the pressure on a reaction which involves only solids or liquids has no effect on the rate.

7 0
3 years ago
Which of the following item(s) explain the differences between the Ka values. Choose one or more: A. The negative charge is on t
AVprozaik [17]

Answer:

D. The electron-withdrawing fluorine atoms pull electron density from the oxygen in trifluoroacetate. The negative charge is more stabilized in trifluoroacetate by this effect.

Explanation:

The structures of trifluoroacetate and acetic acid are both shown in the image attached.

The trifluoroacetate anion (CF3CO2-), just like the acetate anion has in the middle, two oxygen atoms.

However, in the trifluoroacetate anion, there are also three electronegative fluorine atoms attached to the nearby carbon atom attached to the carbonyl, and these pull some electron density through the sigma bonding network away from the oxygen atoms, thereby spreading out the negative charge further. This effect, called the "inductive effect" stabilizes the anion formed,the trifouoroacetate anion is thus more stabilized than the acetate anion.

Hence, trifluoroacetic acid is a stronger acid than acetic acid, having a pKa of -0.18.

5 0
3 years ago
Explain how a water strider can float on the surface of water without sinking.
Rainbow [258]

Answer:

low weight and great area

Explanation:

8 0
3 years ago
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