4 years ago

Is nac1 (table salt) dissolve with water a chemical or physical change quizet?

1 answer:

8 0

Physical. When you simply desolve something with water, to don't actually change it. This action can be undone.
An example of a chemical reaction is when the cells within completely change. You you burn wood, you can't go back in time and un-burn it. Does that make sense?

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3 years ago

What is the difference between a period and a group in the periodic table?

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Calculate the pressure, in atmospheres, required to compress a sample of helium gas from 27.3 L (at 1.00 atm) to 3.36 L at const

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Answer:

8.125 atm

Explanation:

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Boyle's law states that at constant temperature:

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