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Luden [163]
3 years ago
11

What interacted directly with the photographic plates to cause images in Becquerel’s experiment?

Chemistry
2 answers:
alexandr1967 [171]3 years ago
8 0
The answer would be uranium salt
Tasya [4]3 years ago
6 0

Answer is: uranium salt.

Antoine Henri Becquerel (1852 – 1908) was a French physicist and the first person to discover evidence of radioactivity.

Becquerel wrapped fluorescing crystal (uranium salt potassium uranyl sulfate) in a cloth, along with the photographic plate and a copper Maltese cross.

Several days later, he discovered that a image of the cross appeared on the plate.

The uranium salt was emitting radiation.

Because of this discovery, Becquerel won a Nobel Prize for Physics in 1903, which he shared with Marie Curie and Pierre Curie.

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When a certain powder is mixed into a solution of silver nitrate, a white precipitate forms. When the powder is added to a solut
atroni [7]

Answer:

Ammonium chloride

Explanation:

The powder is:- Ammonium chloride

When mixed with silver nitrate, white prescipitate of silver chloride is formed as:-

NH_4Cl+AgNO_3\rightarrow NH_4NO_3+AgCl

When mixed with sodium hydroxide, ammonia gas is formed which has noxious order.

NH_4Cl +NaOH\rightarrow NH_3 + H_2O + NaCl

Ammonia gas on reaction with nickel (II) hydroxide forms deep blue colored complex as shown below:-

Ni(OH)_2(s) + 6NH_3(aq)\rightarrow [Ni(NH_3)_6]^{2+}(aq) + 2OH^{-}(aq)

5 0
3 years ago
At STP, what is the volume of 5.13 mol of nitrogen gas? Answer in units of L.
Gre4nikov [31]

Answer: 114.91L

Explanation:

You need to know the conversion factor first in order to solve this. Any gas occupies 22.4L per mol.

5.13mol(\frac{22.4L}{1mol})= 114.91L of nitrogen gas.

7 0
3 years ago
List two reasons why atmospheric pressure changes ​
Dahasolnce [82]
This change in pressure is caused by changes in air density, and air density is related to temperature. Warm air is less dense than cooler air because the gas molecules in warm air have a greater velocity and are farther apart than in cooler air.
5 0
3 years ago
If a 2 kg object produces a 16 N force, what is its acceleration?
dolphi86 [110]

Answer:

acceleration (a)=8 m/s square.

7 0
3 years ago
A spinner is divided into sections of equal size, of which some are red, some are blue, and the remaining are green. The probabi
Mariana [72]
There's a total of 3 colors, the percent will add up to 100%

100%-50%(red)= 50%
50%-10%(blue)=40%

There is a 40% chance it will land on green
7 0
3 years ago
Read 2 more answers
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