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OlgaM077 [116]
2 years ago
9

Which of the following tables correctly identifies each change as chemical or physical?

Chemistry
1 answer:
Anna [14]2 years ago
5 0

Answer:

A is the answer

Explanation:

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How many grams of ethylene glycol (c2h6o2 must be added to 1.25 kg of water to produce a solution that freezes at -5.88 ∘c?
e-lub [12.9K]
The freezing point depression is calculated through the equation,
                                    ΔT = (kf)  x m 
where ΔT is the difference in temperature, kf is the freezing point depression constant (1.86°C/m), and m is the molality. Substituting the known values,
                                   5.88 = (1.86)(m)
m is equal to 3.16m

Recall that molality is calculated through the equation,
                                  molality = number of mols / kg of solvent
                                       number of mols = (3.16)(1.25) = 3.95 moles
Then, we multiply the calculated amount in moles with the molar mass of ethylene glycol and the answer would be 244.9 g.

6 0
2 years ago
Helpppp!!!
OlgaM077 [116]

Answer:

your answer would be E

Explanation:

I took that class

3 0
2 years ago
Read 2 more answers
As of right now, which of the following forms of nuclear power is the most feasible for human use?
nikitadnepr [17]

As of now, the nuclear fission is the most feasible energy source for human use. All the nuclear power plants are based on the controlled nuclear fission reaction, where the unstable nucleus is bombarded with high speed neutrons, thus, splitting the nucleus into stable ones and releasing huge amount of energy. The nuclear fusion requires very high temperature, the temperature equal's to that of the sun. Hence, it is not feasible right now. As the technology advances, we will see advancement in other form of energies.

6 0
3 years ago
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Is kelp a living or non-living thing?
Fed [463]

Answer:

non living

Explanation:

they trying to trick you

3 0
3 years ago
Why doesn't gravity pull water all the way to the center of the Earth?
ElenaW [278]
It has to do with force
6 0
3 years ago
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