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Yakvenalex [24]
3 years ago
12

Need help with these questions ​

Chemistry
1 answer:
melomori [17]3 years ago
8 0

Answer:

I don't know the answer sorry

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If you had a bottle that contained 5.69x1024 molecules of water, how many
Valentin [98]
Yeah what the other person said ^
6 0
3 years ago
How do test with crash dummies, seat belts, and air bags illustrate newton's first law of motion??
Liono4ka [1.6K]

Answer:

Newton’s law of inertia is illustrated in tests with crash dummies, seat belts, and airbags, wherein the object stays in motion unless there is an unbalanced force applied to it.

Inertia is the main reason why there are seatbelts and airbags in the car. In this case, when the seatbelt is trapped to the passenger, the passenger experiences the same state of motion as the car. If the car accelerates/decelerates, the passenger experiences it too. When the car experiences collision, an unbalance force is acted upon it. This causes the car to stop abruptly, and the passenger shares the same state of motion because of the seatbelt and the airbags that apply the unbalanced force to stop the passenger to go forward.

8 0
3 years ago
The ""size"" of an atom is sometimes defined by the radius of a sphere that contains 90% of the charge density of the electrons.
vfiekz [6]

Answer:

3/2a

Explanation:

The complete step by step answer is found in the attachment

8 0
4 years ago
How does a phase change from solid to liquid occur in a substance?
Alex

Answer:

see below

Explanation:

1. Heat energy is added to the substance, weakening the electrical attraction between molecules.

2. Both the melting point and boiling point are lower.

3. dipole

4. Water and ethanol have different molecular structures.

5. The lone pairs of electrons in the oxygen atom causes the molecule to be bent; the oxygen atom has a partial negative charge, while the hydrogen atoms have partial positive charges.

[quizlet: captncrun]

4 0
3 years ago
What is the charge of an electron<br> A. -1<br> B. 0<br> C. +1<br> D. +2
Gelneren [198K]

Answer:

A

Explanation:

I believe it is negative 1.

6 0
3 years ago
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