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.

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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.

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Explanation: