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Setler79 [48]
3 years ago
7

Indicate the SI base units or derived units that are appropriate for the following measurements:

Chemistry
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

The units of SI: meter, kilogram, second, Kelvin

Explanation:

(a) The length of a marathon race: meter (m)

(b) The mass of an automobile : kilogram (kg)

(c) The volume of a swimming pool : cubic meter (m^3)

(d) The speed of an airplane : (m/s)

(e) The density of gold : (kg/m^3)

(f) The area of a football field : square meter (m^2)

(g) The maximum temperature at the South Pole on April 1,1913: Kelvin (K)

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If you had 15 molecules of H2 and an unlimited supply of N2, how many
Masja [62]

Answer:

10 molecules of NH₃.

Explanation:

N₂ + 3H₂ --> 2NH₃

As the N₂ supply is unlimited, what we need to do to solve this problem is <u>convert molecules of H₂ into molecules of NH₃</u>. To do so we use the <em>stoichiometric coefficients</em> of the balanced reaction:

  • 15 molecules H₂ * \frac{2moleculesNH_3}{3moleculesH_2} = 10 molecules NH₃

10 NH₃ molecules could be prepared from 15 molecules of H₂ and unlimited N₂.  

8 0
3 years ago
Water is composed of one atom of oxygen and two atoms of
egoroff_w [7]

Answer:

<em>Hydrogen.</em>

Explanation:

You've probably seen "H_{2}0" which is the formula for water. It means that there's 2 hydrogen atoms, and one oxygen atom, in one molecule of water.

<em>Hope this helps! Feel free to mark me Brainliest if you feel this helped. :)</em>

3 0
3 years ago
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Which of the following is true regarding nuclear fission and nuclear fusion?
Zarrin [17]
<h2>Nuclear Fission and Nuclear Fusion - Option C</h2>

Nuclear fission and nuclear fusion both of these processes can provide energy. Nuclear fission is the process in which heavy nucleus splits into smaller parts. When they split into smaller particles then it releases energy.

On the other hand, nuclear fusion is the process in which small particles fuse together to form a heavy nucleus. With the formation of heavy nucleus, it also provides energy.

Therefore, both these processes release or provide energy.

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4 years ago
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3. Explain the relationship between power, energy and time.
likoan [24]
There is a very simple relationship between the three. First off, power is the amount of energy used over a certain amount of time. Energy is the capacity of carrying out that power. Lastly, time depends on how much energy you have to exert the work.

Hope this helps :)
7 0
3 years ago
If an atom has 15 protons, 13 neutrons, and 17 electrons, what is the atom's electrical charge?
GuDViN [60]
The charge of this atom would be  -2
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3 years ago
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