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Over [174]
3 years ago
12

1. What kind of evidence did Sir Isaac Newton find that demonstrated the effects of gravity?

Chemistry
2 answers:
Furkat [3]3 years ago
8 0

Answer:

The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest.

krek1111 [17]3 years ago
3 0
One thing he discovered was gravity
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Why is earth often referd as a blue planet ?
astra-53 [7]
The earth is often referred as a blue planet because the hydrosphere looks blue and it covers 3/4 of the earths surface. So the answer is D
3 0
3 years ago
1.Complete and balance each of the acid base neutralizations below. Identify the spectator ions.
Natalka [10]

Answer:

can you give me some hint

4 0
2 years ago
How many positively charged nucleons are in an atom of ^50 24Cr?
lorasvet [3.4K]

Answer:

positively charged nucleons are 24

Explanation:

Given element:

           ₂₄⁵⁰ Cr

The superscript before the symbol of the atoms is mass number

The subscript before the symbol is the atomic number

  Cr is the symbol of the atom

Now,

Atomic number is the number of protons in an atom.

The protons are the positively charged particles in an atom.

For this specie, the positively charged nucleons are 24

5 0
3 years ago
Round off 00907506 to four significant figures.
KIM [24]
The answer of the question is 9075
6 0
3 years ago
Calcium nitrate reacts with sodium phosphate to form sodium nitrate and calcium phosphate. Given 96.1 grams of calcium nitrate w
Bingel [31]
Equation is:

Ca(NO3)2 + Na3PO4 —> NaNO3 + Ca3(PO4)2

Balance it out

3Ca(NO3)2 + 2Na3PO4 —> 6NaNO3 + Ca3(PO4)2

You have 96.1g of Calcium Nitrate

Moles = Mass/Molar Mass

Molar mass of Calcium Nitrate is 164.088 g/mol

96.1g / 164.088 g/mol =0.586 moles

Mole ratio is 3:1

Therefore 0.586/3 moles of calcium phosphate

Moles x molar mass = mass

0.586/3 x 310.18 g/mol = 60.6~g roughly as theoretical yield
5 0
4 years ago
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