Which of the following is an example of a physical change?:

Chemistry

1 answer:

frosja888 [35]3 years ago

4 0

Answer:

Explanation:

A characteristic of matter that allows it to change to something new is a chemical property.

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Calculate and round to the correct number of significant digits .

Marianna [84]

Answer:The solution is in the attached file

Explanation:

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3 years ago

QUICK WILL MARK BRAINIEST!!!! The general formula for an acid is (__n ___) where _____ stands for hydrogen, n stands for the ___

Olenka [21]

Answer:

The general formula for an acid is HnX where H stands for hydrogen, n stands for the number of hydrogen ions, and X stands for the monatomic or polyatomic ions ( since those are negative charged ions, they are called anions).

Explanation:

The general formula for an acid is HnX) where H stands for hydrogen, n stands for the number of hydrogen ions, and X stands for the monatomic or polyatomic ions ( since those are negative charged ions, they are called anions).

An example is H2SO4, also called sulfuric acid

It shows that H2SO4 has 2 hydrogen atoms, so in the formula HnX n=2

X fro H2SO4 is SO42-, it's a polyatomic ion. Since it has a negative charge of 2- it needs 2 hydrogen atoms to bind and form H2SO4

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Stephan claims that Earth has both a gravitational field and a magnetic field. Which statement best supports his claim?

Bess [88]

Answer:

Explanation:

Without gravity, any object wont go to the ground, and without a magnetic field, a compass cant be used for navigation.

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3 years ago