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puteri [66]
3 years ago
6

Use the periodic table to write the electron configuration of selenium (Se).

Chemistry
2 answers:
kolbaska11 [484]3 years ago
5 0

Answer:

1s^22s^22p^63s^23p^64s^23d^104p^4

Fantom [35]3 years ago
4 0

Answer:

1s2 2s2 2p6 3s2 3p6 4s2 3d10  p4

Explanation:

PLATO correct

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Sodium chloride reacts with 0.10 moles of aluminum nitrate in water soultion. How many grams of sodium chloride are required?
Vladimir79 [104]

Answer:

The answer to your question is 0.3 moles of NaCl

Explanation:

Data

NaCl = ?

Al(NO₃)₃ = 0.1 moles

Balanced reaction

                         Al(NO₃)₃  + 3NaCl    ⇒   3NaNO₃   +   AlCl₃

Now, use proportions to solve the problem

                       1 mol of Al(NO₃)₃  ------------ 3 moles of NaCl

                     0.1 moles of Al(NO₃)₃  --------  x

                          x = (0.1 x 3) / 1

                          x = 0.3 moles of NaCl

6 0
3 years ago
(vii). Give two uses of chlorine gas.​
Strike441 [17]

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Explanation: hope this helps u! HAppy Holidays!  

7 0
3 years ago
A strong acid can also be described as a very weak .
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I guess is weak alkaline. when the substance is more acidic, there will be less alkalinity
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Difference between emprical and molecular formula
Musya8 [376]

Answer:

The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atom whereas a molecular formula gives the exact number of each atom in a molecule.

3 0
2 years ago
A ___ such as h20 is a symbol that shows the elements in a compound and the ratio of atoms
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