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BabaBlast [244]
3 years ago
8

Which statements describes Newton's law of universal gravitation ?

Chemistry
2 answers:
IrinaK [193]3 years ago
8 0

Your answer is D. You're Welcome

Pepsi [2]3 years ago
5 0

Answer:

D. Every object in the universe attracts every other object

Explanation:

Newton's law of universal gravitation tells us that the pull that bodies have is inversely proportional to the distance of separation and directly proportional to the product of their masses. This attraction exists between every body in the universe.

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A flat metal surface in an electric cell is its _________ terminal
jarptica [38.1K]

Answer:

negative

Explanation:

3 0
2 years ago
How many millimeters of 12 M HCI will be needed to create a 250-ML solution of 2 HCI?
Anestetic [448]
Call what you have to find is x
nHCl/V=12M 
nHCl=2.0,25=0,5 
->x=0,5.12=6 (600 ml)
6 0
3 years ago
How many moles of zinc are needed to react with 45.60 moles of nitric acid?
uranmaximum [27]

Answer:

11.4 moles

Explanation:

Your chemical equation for the reaction of zinc and nitric acid will be

Zn  +  4 HNO₃  -->  Zn(NO₃)₂  +  2 NO₂  +  2 H₂O

To solve the problem, you need to use stoichiometry.  For every 1 mole of zinc, you will need 4 moles of nitric acid.  Divide 45.60 by 4.  Your answer should be 11.4 moles.

3 0
3 years ago
Which element is an example of a metalloid? A) gold B) helium C) iron D) silicon
Ulleksa [173]

D) Silicon is an example of a metalloid.

It has some of the properties of metals and some of the properties of nonmetals.

In the Periodic Table, metalloids sit on either side of a zig-zag line separating metals from nonmetals.

In the diagram below, Fe and Au are metals, while He is a nonmetal.

5 0
3 years ago
Read 2 more answers
A 5.5 g sample of a substance contains only carbon and oxygen. Carbon makes up 35% of the mass of the substance. The rest is mad
Mamont248 [21]

Answer:

The correct answer is option (1).

Explanation:

Mass of the sample = 5.5 g

Percentage of carbon in sample = 35 %

Percentage of oxygen in sample = 100% - 35%

\%=\frac{\text{Mass of the element in the sample}}{\text{Mass of sample}}\times 100

Mass of carbon in a sample: (35%) of 5.5 g

\frac{35}{100}\times 5.5 g=1.925 g

Mass of oxygen in a sample: (100%-35%) of 5.5 g

\frac{100-35}{100}\times 5.5 g=3.575 g

6 0
3 years ago
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