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3 years ago

Which of these would be easily soluble in water? a. salt b. oil c. aluminum foil

Chemistry

2 answers:

disa [49]3 years ago

8 0

Answer:

salt

Explanation:

because is logic sense lol

mote1985 [20]3 years ago

5 0

A) Salt, because salt can easily dissolve in water. Oil would not dissolve or evaporate in water (think of an oil spill - does that oil dissappear?). Aluminum foil would definitely not dissolve in water, so it is not soluble.

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Rzqust [24]

The correct answer is number 1

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Rzqust [24]

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explanation :

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3 years ago

How much heat is released as the temperature of 25.2 grams of iron is decreased from 72.1°C to 9.8°C? The specific heat of iron

prisoha [69]

Answer:

$Q=-697.06\ J$

Negative sign says that release of heat.

Explanation:

The expression for the calculation of the heat released or absorbed of a process is shown below as:-

$Q=m\times C\times \Delta T$

Where,

$\Delta H$ is the heat released or absorbed

m is the mass

C is the specific heat capacity

$\Delta T$ is the temperature change

Thus, given that:-

Mass = 25.2 g

Specific heat = 0.444 J/g°C

$\Delta T=9.8-72.1\ ^0C=-62.3\ ^0C$

So,

$Q=25.2\times 0.444\times -62.3\ J=-697.06\ J$

Negative sign says that release of heat.

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fee for a Law and rule book

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tangare [24]

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Read 2 more answers