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Ainat [17]
2 years ago
8

What has more heat energy, a bucket of water at 21 degrees Celsius or a swimming pool at the same temperature?

Chemistry
1 answer:
Leya [2.2K]2 years ago
6 0

Answer:

<em>The heat capacity of an object depends both on its mass and its chemical composition. Because of its much larger mass, the swimming pool of water has a larger heat capacity than the bucket of water.</em>

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How many atoms are in 5 grams of H2O?
mojhsa [17]

Hello!

We know that by the Law of Avogrado, for each mole of substance we have 6.02 * 10²³ atoms, if:

The molar mass of water (H2O)

H = 2 * (1u) = 2u

O = 1 * (16u) = 16u

---------------------------

The molar mass of H2O = 2 + 16 = 18 g / mol

If:

1 mol we have 6.02 * 10²³ atoms

1 mole of H2O we have 18 g

Then we have:

18 g ------------- 6.02 * 10²³ atoms

5 g -------------- x

\dfrac{18}{5} = \dfrac{6.02*10^{23}}{x}

18*x = 5*6.02*10^{23}

18\:x = 3.01*10^{24}

x = \dfrac{3.01*10^{24}}{18}

\boxed{\boxed{x \approx 1.672*10^{23}\:atoms}}\end{array}}\qquad\checkmark

I Hope this helps, greetings ... DexteR! =)

6 0
3 years ago
Read 2 more answers
According to Maslow's hierarchy of needs, the basic needs are what we call physiological or biological needs. The survival of th
Volgvan

Answer:

<u>True</u>

Explanation:

|ndeed,  Psychologist Abraham Maslow's sought to describe hierarchy in which the average (or most) humans place their needs. In other words, he believes we as humans have basic needs which we long to satisfy.

On the ranking or hierarchy, according to Maslow the need humans satisfy first is their physiological need. Here's the full hierarchy:

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3 0
3 years ago
Hydrochloric acid reacts with sodium hydroxide to form water and sodium chloride. Hydrochloric acid is an extremely acidic, clea
Brut [27]

The answer is C.

You're welcome!

7 0
3 years ago
Sound and light are made up of matter.
k0ka [10]
That statement is false
4 0
3 years ago
Help me please!!!!!!!!!!!!!!!!!!!!!!!!!!!
Vsevolod [243]
After the first 2 min the 20 g  are only 10g,  (1 half-life)
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7 0
3 years ago
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