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snow_lady [41]
3 years ago
9

The force of gravity pulls all objects downwards." which of these statements is correct about the law of science?

Chemistry
1 answer:
Masteriza [31]3 years ago
6 0
The answer is D. This is because you can observe that gravity pulls things downward, it is not contradicted by data and we are always continuing to experiment with the laws of science. 
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a book with a mass of 1 kg is dropped from a height of 3 m. what is the potential energy of the book when it reaches the floor?
mafiozo [28]
Well, first of all, the formula for finding potential energy is;
PE=mgh
  Where; m is the mass
               g is the gravitational force or acceleration due to gravity
                h is the height. 
   Anyway, according to the question, the mass is 1kg, the acceleration due to gravity has a constant value of 10ms² . And the height is 3m. Now you just have to use all these in the formula. So;
mgh= 1 x 10 x 3. That will be 30. And the unit of potential energy is Joule. So the answer is 30 joules. Hope i helped. Have a nice day.     
5 0
3 years ago
Which is not a physical property?
ahrayia [7]

Boiling point is the only answer that doesn’t have to do with their physical property

6 0
3 years ago
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What is the formula for sulfur hexa fluoride?
vlabodo [156]
S2F6, is the correct answer I believe!
6 0
3 years ago
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Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is _______ , and the chem
Kisachek [45]

Answer:

Hello my Friend! The answer is: Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is +3 , and the chemical formula of the compound is Mn2O3.

Explanation:

Manganese can have two oxidation states: +2 and +3, but in this case, the "(III)"  indicates that in this compound, the state of oxidation is +3.

7 0
3 years ago
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Is carbon a metal or a nonmetal? How many valence electrons does a carbon atom have?
marshall27 [118]

Answer:

Carbon is a solid non-metal element. Carbon has eight valence electrons.

Explanation:

hope this helps!

7 0
3 years ago
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