In order to make observations, an observer must always use what? Sciene is the subject

Chemistry

1 answer:

Alekssandra [29.7K]3 years ago

3 0

Answer:

In order for a scientist to make observations. They must uses their senses.

Explanation:

The senses include:

Sight

Touch

Smell

Taste

Hearing

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Answer:

C. atomic mass

Explanation:

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4 years ago

How many moles is in 2.52*10^24 molecules of water?

nataly862011 [7]

Hi friend
--------------
Your answer
-------------------

Water = H2O

Number of molecules in one mole of water = 6.022 × 10²³ [Avogadro's constant]

Given number of molecules = 2.52 × 10²³

So,
------

Number of moles =
$\frac{2.52 \times 10 {}^{24} }{6.022 \times 10 {}^{23} } \\ \\ = 4.184 \: (approximately)$

HOPE IT HELPS

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3 years ago