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Lisa [10]
3 years ago
7

Seasonal variation on earth is due to the

Chemistry
1 answer:
Iteru [2.4K]3 years ago
7 0

The tilt of the Earth on its axis is what causes the seasons.

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Determine the number of Au atoms found in 5.18 grams of gold.
Agata [3.3K]

Answer:

1.58× 10²² atoms of Au

Explanation:

Given data:

Mass of gold = 5.18 g

Number of atoms of gold = ?

Solution:

First of all we will calculate the number of moles of gold.

Number of moles = mass/molar mass

Number of moles = 5.18 g/196.96 g/mol

Number of moles = 0.0263 mol

Number of atoms:

Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms of Au

0.0263 mol × 6.022 × 10²³ atoms of Au / 1mol

0.158× 10²³ atoms of Au

1.58× 10²² atoms of Au

3 0
3 years ago
A solution is formed by dissolving 83.2 grams of copper II chloride (CuCl2) in 2.5 liters of water. The molar mass of CuCl2 is 1
alexandr1967 [171]

Explanation:

the answer is in the above image

6 0
3 years ago
Read the Casestudy Conservation Planning and summarize it - 5 sentence minimum.
Fittoniya [83]

Answer:

Developing Conservation Case Studies for Decision-making ... titled “Producer Experiences” or “Case Studies” for use in future planning efforts and ... convince a producer of the benefits of conservation, or at least help them understand the ... Easy to read, especially for those that are not comfortable with economics or data​.

3 0
2 years ago
(03.03 MC)
Anit [1.1K]

Answer: C

Explanation: Picture attached.

7 0
3 years ago
It's almost time for bed but before you're ready to go to sleep you decide to make yourself a cup of hot chocolate and a tasty s
ehidna [41]

1. Milk.

2. What is in the bowl the popcorn, cereal, and pretzels.

3. Hot chocolate and hot milk.

4. Hot chocolate mix.

5. Hot milk.

6. No, because the hot chocolate powder was meant for hot liquids and with cold water it will take longer to dissolve.

You don't have to write exactly as me change it up if you need to hope this helps!!!

8 0
3 years ago
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