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Oduvanchick [21]
3 years ago
14

A sealed beaker of what you are told is aqueous nickel sulfide was given to you by the local chemist and you put it on the windo

w sill. Ater a tew days, you notice that the mixture is getting thick toward the bottom. What is the nature of the initial nickel sulfide mixture, assuming that the temperature on the sill remained approximately constant? a) It is a gas. b) It is a colloid. c) It is a solution.
Physics
1 answer:
Masteriza [31]3 years ago
7 0

Answer: D. It is a SUSPENSION

Explanation:

SUSPENSION

This is a combination of two or more single substances. The properties of the components involved are not however changed or lost as is the case with compounds.

For this reason this mixture can be separated due to sedimentation or filtering.

After a few days, this occurs in the aqueous nickel sulfide because the solid nickel sulfide is separating from the water.

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Rama09 [41]

Answer:

21 psi

Explanation:

The weight of the car is:

W = mg

W = 1000 kg * 9.8 m/s²

W = 9800 N

Divided by 4 tires, each tire supports:

F = W/4

F = 9800 N / 4

F = 2450 N

Pressure is force divided by area, so:

P = F / A

P = (2450 N) / (0.13 m × 0.13 m)

P ≈ 145,000 Pa

101,325 Pa is the same as 14.7 psi, so:

P ≈ 145,000 Pa × (14.7 psi / 101,325 Pa)

P ≈ 21 psi

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3 years ago
Two north poles will blank
soldier1979 [14.2K]

Answer:

Be pushed away from each other.

Explanation:

7 0
3 years ago
What is the force on a person’s hand, which is using a rope to accelerate a 5 kg block upward with an acceleration of 2.2 m/s 2
slavikrds [6]

Answer:

F = 11 N

Explanation:

Given,

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F = ma

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5 0
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Ow much charge flows from a 12.0 v battery when it is connected across a completely discharged 18.0 μf capacitor
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A spring in a pogo-stick is compressed 12 cm when a 40. kg girl stands on the stick. what is the force constant for the pogo-sti
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Explanation:

3 0
3 years ago
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