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Vinvika [58]
2 years ago
5

Hi! could you help with this (Brainlist + 50 points)

Chemistry
1 answer:
Kazeer [188]2 years ago
3 0

1. 44 grams

2. KCIO3

3. the third one

hope this helps :)

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Two perfumes are released at the same time. If one is standing 7.5 m from the point of release. Perfume A (molar mass 275 g/mol)
natta225 [31]
According to Graham's Law of Diffusion," Diffusion of Gas is inversely proportional to square root of its Molecular Mass or Density".

                          rᵇ/rᵃ  =  \sqrt{da/db}
Or,
                          rᵇ/rᵃ  =  \sqrt{Ma/Mb}     ----- (1)
As, 
                          Ma  =  275 g/mol

                          Mb  =  205 g/mol

Putting Values in eq.1,

                          rᵇ/rᵃ  =  \sqrt{275/205}

                          rᵇ/rᵃ  =  1.15

Result:
          Perfume B will diffuse 1.15 times faster than Perfume A. Hence, Perfume B will be first smelled by the person.
6 0
2 years ago
This equation shows the combustion of methanol.
sveticcg [70]

Answer: 44.8 L

Explination:

7 0
3 years ago
Give the formulas for all of the elements that exist as diatomic molecules under normal conditions. See if you can do this witho
GenaCL600 [577]

Answer:

They are:

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Note: whether the element At molecule is monoatomic or diatomic is incredibly arguable. While some say it exists as diatomic because it is a halogen like bromine, iodine etc, At is in fact extremely unstable and no one has ever really studied the molecules on it, so, when others say it is monoatomic, this is also based on calculations. But the other 7 elements listen above is for sure diatomic.

4 0
3 years ago
In which circumstance is displacement the same as distance traveled?
Ede4ka [16]
Distance travelled will be equal to displacement when the line drawn is completely straight. 

Hopefully, this helps.
8 0
3 years ago
Read 2 more answers
How many branches of chemistry are there .​
faltersainse [42]

Answer:

5

Explanation:

Analytical chemistry

Organic chemistry

Inorganic chemistry

physical chemistry

Biochemistry

6 0
2 years ago
Read 2 more answers
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