One aluminum atom will cost 0.84 × 10⁻²³ cents.
Explanation:
Aluminium costs 85 cents per 453.592 grams.
number of moles = mass / atomic weight
number of moles of aluminium = 453.592 / 27 = 16.8 moles
To calculate the number of aluminum atoms we use the Avogadro's number:
if 1 mole of aluminum contains 6.022 × 10²³ aluminum atoms
then 16.8 moles of aluminum contains X aluminum atoms
X = (16.8 × 6.022 × 10²³) / 1 = 101.17 × 10²³ aluminum atoms
Now, taking in account the aluminium price, we devise the following reasoning:
if 101.17 × 10²³ aluminum atoms costs 85 cents
then 1 aluminum atom costs Y cents
Y = (1 × 85) / (101.17 × 10²³) = 0.84 × 10⁻²³ cents
Learn more about:
Avogadro's number
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Answer:
Pretty sure the answer is B
B) your hand pulling up on the rock
Answer: 184 g of nitrogen dioxide that are produced from 4 moles of nitric oxide
Explanation:
The balanced chemical reaction is:
According to stoichiometry :
2 moles of 
produce = 2 moles of 
Thus 4 moles of will require=
of
Mass of 
Thus 184 g of nitrogen dioxide that are produced from 4 moles of nitric oxide
