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Softa [21]
3 years ago
12

Why are there groups, in the periodic table?

Chemistry
2 answers:
Rasek [7]3 years ago
7 0
Groups help organize the elements. Elements of the same group have similar chemical qualities. So looking at an element’s group on the periodic table can help you identify some of it’s characteristics such it’s as reactivity with other elements or of it’s a good conductor.
zepelin [54]3 years ago
6 0
To classify the elements and make them easier to understand
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Ammonia, nh3, for fertilizer is made by causing hydrogen and nitrogen to react at high temperature and pressure. How many moles
charle [14.2K]

Answer:

0.30molNH_3

Explanation:

Hello there!

In this case, since the reaction for the formation of ammonia is:

3H_2+N_2\rightarrow 2NH_3

We can evidence the 1:2 mole ratio of nitrogen gas to ammonia; therefore, the appropriate stoichiometric setup for the calculation of the moles of the latter turns out to be:

0.15molN_2*\frac{2molNH_3}{1molN_2}

And the result is:

0.30molNH_3

Best regards!

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Crazy boy [7]

We have a solution of NaOH and H₂CO₃

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If there were to be another NaOH molecule, a similar substitution will take place, substituting the second hydrogen from H₂CO₃ as well to form Na₂CO₃

6 0
2 years ago
How ph relate with poh
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