How many moles of helium are 8.84×1024 atoms of He?
1 answer:
Answer:
14.68 moles of He
Explanation:
To do this, just remember Avogadro's Constant or Avogadro's number. This constant tells us how many units ( in this case atoms) there are in a mole of ANY type of substance.
Avogadro's constant is 6.022140857 × 10²³ units per mole.
Now that we know how many atoms there are in 1 mole, we can use this as our conversion factor.
8.84 x 10²⁴ atoms of He → moles of He
So the answer would be:
14.68 moles of He
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are reacted.
Explanation:
To calculate the number of moles, we use the equation:
.....(1)
Putting values in equation 1, we get:
The chemical equation for the reaction is
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2 moles of produce = 1 mole of
So, 0.100 moles of produce=
of
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Answer:
a)
b)
c)
Explanation:
a)
when is added to LiOH, lithium chlorate and water is formed.
Balancing of above reaction,
It can be seen that all the atoms in both the sides are balanced. so it is a balanced reaction.
(b) When aqueous is added to NaOH,
and
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Balancing of above reaction,
First balance all the atoms except O and H
S atom is already balanced in either side
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No. of Na atom in right hand side = 2
So multiply NaOH by 2, now the reaction becomes:
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No. of O atoms in right hand side = 5
So multiply H2O by 2, now the reaction becomes:
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Balancing of above reaction,
Barium atoms are already balanced on either side.
No. of F atoms on left hand side = 1
No. of F atoms on right hand side = 2
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