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Nitella [24]
3 years ago
7

Calculate the number of moles for 12.044*10^23 number of helium atoms

Chemistry
1 answer:
givi [52]3 years ago
8 0

Answer:

Explanation:

number of moles=number of particle (atoms)/avogadro number (NA)

we know that avogadro number is equal to 6.23*10^23

given number of atoms=12.044*10^23

therefore

moles=12.044*10^23/6.23*10^23=1.9=2

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7 0
3 years ago
Which of the following is true for balancing equations?
algol [13]

Answer:

A.

Explanation:

An equation with the equal amount and proportion of atoms of each element on both sides of the reaction is commonly referred to as a balanced chemical equation.

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5 0
3 years ago
What volume of air is needed to burn completely 100cm of propane?
Evgesh-ka [11]

Answer:

See below

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Using oxygen as 21 percent of air means that

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5 0
2 years ago
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