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3 years ago

some students using Apple to represent the Earth what is the best reason to use an Apple for this comparison?

Chemistry

1 answer:

AleksAgata [21]3 years ago

3 0

Answer:

The skin of the apple is very thin, and the crust of the Earth is very thin.

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What is the mass in grams of 9.76 × 1012 atoms of naturally occurring beryllium?

Ksivusya [100]

The atomic mass of beryllium (Be) is 9 g/mole

Now, 1 mole of any substance contains avogadro's number of that substance. Therefore:

1 mole of Be contains 6.023 10^23 atoms of Be

In other words:

9 grams of Be contains 6.023*10^23 atoms of Be

Therefore, the mass corresponding to 9.76 * 10^12 atoms of Be is:

= 9 g * 9.76 10^12 atoms/6.023*10^23 atoms

= 1.458 * 10^-10 g (or) 1.46 * 10^-10 g

8 0

3 years ago

Read 2 more answers

PLEASE ANSWER.

QveST [7]

Yet and 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

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4 years ago

A student heats a sample of hydrate once, and the mass of the sample and the evaporating dish is 16.428 g. After a second heatin

jolli1 [7]

Answer:

12.371 g

Explanation:

Given :

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{evaporating\ dish}+m_{First\ heated\ sample}=16.428\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

Mass of salt hydrate:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{Hydrate\ sample}=25.637-m_{evaporating\ dish}\ g=25.637-1.135\ g=24.502\ g$

Mass of salt anhydrous:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

$m_{Second\ heated\ sample}=m_{salt\ anhydrous}=13.266-m_{evaporating\ dish}\ g=13.266-1.135\ g=12.131\ g$

Mass of water:

$m_{water}=m_{Hydrate\ sample}-m_{salt\ anhydrous}=24.502-12.131\ g=12.371\ g$

$m_{water}=12.371\ g$

4 0

4 years ago

Points

ExtremeBDS [4]

The answer is D. A compound

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3 years ago

The appearance of the surface of a mineral when it reflects light is known as

Nuetrik [128]

Answer:

Explanation:

The appearance of the surface of a mineral when it reflects light is known as

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3 years ago

some students using Apple to represent the Earth what is the best reason to use an Apple for this comparison?​

some students using Apple to represent the Earth what is the best reason to use an Apple for this comparison?