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Temka [501]
3 years ago
13

Good answers to the topic ‘Solids’

Chemistry
1 answer:
Svetach [21]3 years ago
4 0

Is this a question  or are you saying thx for the answers

if so np

Im not sure if i answered or not

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Lavoisier's discovery that air was not a substance but rather a mixture of nitrogen and oxygen is described as history-making. w
Taya2010 [7]
Antoine Lavoisier was part of a wealthy family in Paris. He pursued to study science upon realizing that chemistry or the study of the elements was not a well-studied field. His discovery of that air was a mixture of nitrogen and oxygen gave rise to the concept of COMBUSTION after repeating the experiments made by Priestly using mercury and other metal oxides. 

The event was such a history-making because it disproved that concept that air was a pure substance along with 3 others: earth, fire, and water. 
6 0
3 years ago
How do the circulatory, respiratory, or digestive systems work together?
Alexandra [31]

Answer:

by pumping blood throughout the body.

Explanation:

7 0
3 years ago
BrainlieSTTTTTT A gas is originally stored at a pressure of 25 atm with a volume of 3 L. If the pressure were increased to 75 at
Crazy boy [7]

Explanation:

Apply Boyle's Law :-

P1V1 = P2V2

  • Where P1 is 25 atm
  • V1 is 3L
  • P2 is 75 atm
  • V2 is what we need to find out.

25 × 3 = 75 × V2

\tt{V_2 = \dfrac{ 25 \times 3}{75}}

\tt{V_2 = \dfrac{75}{75}}

<u>So, the answer is d) Part, 1L .</u>

Hope it helps :)

3 0
3 years ago
Gold forms a substitutional solid solution with silver. Calculate the number of gold atoms per cubic centimeter (in atoms/cm3) f
Leokris [45]

Answer:

Gold: 1.1 x 10²² atoms/cm³

Silver: 4.8 x 10²² atoms/cm³

Explanation:

100 g of the alloy will have 29 g of Au and 71 g of Ag.

19.32 g Au ____ 1 cm³

29 g Au ______  x

x = 1.5 cm³

10.49 g Ag ____ 1 cm³

71 g Ag _______   y

y = 6.8 cm³

The total volume of 100g of the alloy is x+y = 8.3 cm³.

Gold:

196.97 g Au____ 6.022 x 10²³ atoms Au

29 g Au _______ w

w = 8.9 x 10²² atoms Au

8.9 x 10²² atoms Au ____ 8.3 cm³

           A                    ____ 1 cm³

A = 1.1 x 10²² atoms Au

Silver:

107.87 g Ag____ 6.022 x 10²³ atoms Ag

71 g Ag _______ w

w = 4.0 x 10²³ atoms Ag

4.0 x 10²³ atoms Ag ____ 8.3 cm³

          B                    ____ 1 cm³

B = 4.8 x 10²² atoms Ag

6 0
3 years ago
Which conclusion was a direct result of the gold foil experiment?
kari74 [83]
They determined that (1) An atom is mostly empty space with a sense, positively charged nucleus, because most particles passed straight through the gold foil, but occasionally they would deflect, sometimes by a very large margin
3 0
3 years ago
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