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Juliette [100K]
2 years ago
13

Which of the following uses mechanical energy to function?

Chemistry
2 answers:
elena55 [62]2 years ago
5 0
C is the answer i believe
Tcecarenko [31]2 years ago
4 0
D the rest uses some sort of radiation
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sodium hydroxide, NaOH , is dissolved in water to make up a solution that is 1.58× 10 −5 M in NaOH . What is the pH
mars1129 [50]

Answer:

pH = 9.2

Explanation:

pH+pOH=14

But pOH= -log[OH]= -log[1.58×10^-5]= 4.8

We can now say

4.8+pH= 14

pH= 14-4.8= 9.2

8 0
3 years ago
Ill give brainlist if you get it righttt...Radiant energy travels in the form of electromagnetic waves. Which statement describe
erastovalidia [21]

Answer:

Both types of waves transfer energy

Explanation:

I think that's right

6 0
3 years ago
If you were preparing a defined, minimal medium for an aerobic, chemolithotrophic bacterium to grow on, which of the following c
Eddi Din [679]

Answer:

I believe it's D. FE2+ and MgCl2...

Explanation:

Hope this helps!!

7 0
3 years ago
How many polar bonds are found in this molecule
Law Incorporation [45]
A bond is non polar if it is between same atoms and polar if it is between different atoms.

Same atoms are like two dogs of same strength pulling a bone towards towards each other. But when it’s different atoms it’s like a big dog and small dog then the bone is more towards bigger dog. So it’s the same way in bonds.

Bonds are made up of electrons, when the more stronger pulling atom is present than other the electrons are more towards it and as a result we have polar bond. There is development of a kind of a negative pole and a positive pole.

The stronger atom has electrons towards itself so it has a little more negative charge while the other atom has positive charge. This makes bond polar.

So just look for bond between two different atoms, it would be polar.

Look at the pic below to see the answer.

Marked with green is bond between same atoms... one carbon and another carbon so it is not polar and test marked with blue are polar.

Well the answer should have been 10 but since the bonds at 3 and 8 are two of same type we count only one of them.


The answer is 8... well the answer should be 10 otherwise... discuss it with ur teacher

6 0
3 years ago
If you have a chemical reaction and there are 36 grams of reactant. How much product are you going to have to have?
kolezko [41]

Answer:

36

Explanation:

products and reactants have to be equal

7 0
3 years ago
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