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labwork [276]
3 years ago
8

Which of these actions is the BEST evidence that waves can cause objects to move?

Chemistry
2 answers:
Thepotemich [5.8K]3 years ago
8 0
The answer is C: A surfer rides back to the beach on his surf board.

All the others are examples of people doing stuff to the water, C is an example of the water moving something, in this case the water is moving a surfer and his surf board.
S_A_V [24]3 years ago
7 0

Answer:

The correct answer is C) A surfer rides back to the beach on his surfboard.

Explanation:

This is the best answer because the other choices involve people moving things or moving themselves in a lake or the ocean. So if we want evidence that waves can cause objects to move, the wave must be the active part. Option C is correct because the surfer is passive. He or she is riding the surfboard but the waves are moving him or her.

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Based on the information that is given, which atom is the table ?
andriy [413]

Answer:

The one with the greatest mass would be the one that has the most things in the nucleus, protons and nutrons

Explanation:

3 0
3 years ago
Its chemistry: isotopes, elements, due Wednesday thanks
bulgar [2K]

Answer:

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Explanation:

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3 years ago
What mass of F2 is needed to produce 180 g of PF3 if the reaction has a 78.1% yield?
nexus9112 [7]

Answer:

91.26 g

Explanation:

Given data:

Mass of PF₃ = 180 g

Mass of F₂ required = ?

Solution:

Chemical equation:

P₄ + 6F₂   → 4PF₃

Moles of PF₃:

Number of moles = mass/ molar mass

Number of moles = 180 g/ 88 g/mol

Number of moles = 2.05 mol

Now we will compare the moles of PF₃ with F₂.

                        PF₃            :           F₂

                          4               :           6

                          2.05         :           6/4×2.05 = 3.075

Mass of  F₂:

Mass of F₂ = moles × molar mass

Mass of F₂ = 3.075 mol × 38 g/mol

Mass of F₂ =  116.85 g

If reaction yield is 78.1%:

116.85 /100 ×78.1 = 91.26 g

6 0
3 years ago
What are the indicators for determining acids?
yulyashka [42]

Answer:

Acid-base indicators are chemicals used to determine whether an aqueous solution is acidic, neutral, or alkaline. Because acidity and alkalinity relate to pH, they may also be known as pH indicators. Examples of acid-base indicators include litmus paper, phenolphthalein, and red cabbage juice.

Explanation:

4 0
3 years ago
Which sound frequency with a human ear be able to detect? Select ALL correct answers.
Allisa [31]

Answer:

100 HZ 1,000 HZ 10,000 HZ there you go :)

5 0
3 years ago
Read 2 more answers
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