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poizon [28]
3 years ago
13

5. Can you determine the number of neutrons in the nucleus of an atom by looking at the element's average atomic mass and the at

omic number? Why or why not?
Chemistry
1 answer:
Shkiper50 [21]3 years ago
7 0

Answer:

No you can't

Explanation:

The atomic number is the amount of protons in element's nucleus, that's one reason why. The second reason is that the atomic mass is protons and neutrons combined, their estimated value, which doesn't show how much neutrons are in an element. It does show combined, but not specifically neutrons

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Which of these steps is most likely to be part of an investigation about friction?
Serggg [28]

Answer:

I want to say option C: Testing which surfa e is easier to slide a wooden block across.

Explanation:

I'm not 100 % sure though with my answer. I'm truly so very sorry if my answer is wrong. I tried my best.

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Question 4 of 10 Which phrase describes a scientific law? A. A claim that the volume and temperature of a gas are unrelated B. A
Serjik [45]

Answer:it’s C

Explanation:

I just got it wrong and it showed the the right answer

8 0
3 years ago
2. What is the difference between an organ and an organ system
aleksandrvk [35]
The difference between an organ and a tissue is that basically tissues are a group of similar cells that works together. Then a group of tissue that works together would make up an organ. Groups of organ working together later makes up an organ system. This is the main difference between an organ and a tissue.
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3 years ago
Read 2 more answers
The statement "electrons have a negative charge" is true. Select the correct evidence scientist have that proves this statement
Kryger [21]

The question is incomplete but i will try to offer as much help as i can.

Answer:

See explanation

Explanation:

The electron was discovered by J.J Thompson. His model of the atom was called the plum-pudding model of the atom.

He discovered that cathode rays being negatively charged particles were deflected by a magnet in just the same way as moving, negative electrically charged particles.

Similarly, in an electric field, they are deflected towards the positive plate of the electrostatic field which shows that they are negatively charged.

3 0
3 years ago
If the lungs of a child hold 0.11 mol of air in a volume of 2.8 L, then the lungs of an average female adult, with a volume is 4
Aleks [24]

Answer:

Explanation:

A childs lung can hold .11mols/ per 2.8 L so that gives us a molarity of .039M

A adults lungs can hold .18 mols /per 4.6 so that gives us .039M aswell meaining that the lung capacity between the two is not different.

4 0
3 years ago
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