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adelina 88 [10]
3 years ago
6

PERIODIC TABLE What element is located at the period 3, group 13?

Chemistry
1 answer:
nexus9112 [7]3 years ago
5 0

Answer:

Aluminiun

Explanation:

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If 6 moles of a compound produce 84 J of energy, what is the a<br> Hreaction in J/mol?
Vikki [24]

Answer:

14 J of heat

Explanation:

Recall that the enthalpy of reaction is defined as the enthalpy change that occurs in a system when matter is transformed by a given chemical reaction, if all reactants and products are in their standard states. Here we have the heat of formation of six moles of the substance and we are expected to use it to obtain the the heat of formation of one mole of the compound and we can do that by simple proportion as shown below;

If 6 moles of the compound produces 84J of heat

1 mole of the substance will produce 1×84/6 = 14 J of heat

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What is wrong with the notation 1s22s22p63s23p63d104s24p2 for germanium (atomic number 32)?
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<span>The notation is not written in the correct order as the 4s subshell should appear before the 3d subshell.
</span>The correct order in an electron configuration would be: 
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3 0
3 years ago
Define relative atomic mass?​
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Answer:

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Explanation:

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