Which symbol represents an atom in the ground state with the most stable valence electron configuration?

1 answer:

5 0

A stable electron configuration has 8 valence electrons and a full octet, meaning that their would be a "happy" atom and it would be non reactive.

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Select the correct comparison of meteors and meteorites. Meteorites are meteors that have struck the earth’s surface. Meteors ar

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38.0 mL of a 0.026 M solution of HCl is needed to react completely with a 0.032 M NaOH solution. Calculate the number of moles o

svet-max [94.6K]

Answer:

The number of moles of HCl actually present is 0.000988

Explanation:

The balanced chemical equation of the given reaction is 

$HCl+NaOH \rightarrow NaCl+H_2 O$

Here one mole of HCl reacts with one mole of NaOH to form one mole of NaCl and one mole of water. Here the molarity of HCl is given as 0.026M.

molarity of NaOH is 0.032M 

molarity is the number of moles per unit volume of solution.

we have to calculate the number of moles in 36 mL of HCl.

38 mL=36/1000=0.038L 

the number of moles in 38 mL of HCl is given by 

no of moles = $0.026 \times 0.038=0.000988$ 

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Chemical reactions cannot involve different states of matter. True False

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Answer:

False

Explanation:

I really have a strong hunch about my answer ,try that out....

HOPE IT HELPS YOU PO !!!!

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