8. A student drew the diagram below to show the movement of water through a hydroelectric dam. et att Hydroelectric Dam ET Water
2 answers:
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Answer:
m = 20.9 g.
Explanation:
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In this case, according to the given information, it turns out possible for us to solve this problem by recalling both the Avogadro's number for the calculation of the moles in the given molecules of calcium phosphate and the molar mass of this compound in order to secondly calculate the mass as shown on the following setup:
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Answer: There are molecules in 63.00 g of
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.
To calculate the moles, we use the equation:
1 mole of contains =
molecules
Thus 3.5 moles of contains =
molecules.
There are molecules in 63.00 g of