3 years ago

How many moles are in 72g of NaOH

1 answer:

Anni [7]3 years ago

4 0

There are 1.8 moles in 72 grams of NaOH.

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ehidna [41]

Use formula: Initial Pressure x Initial Volume/Initial temperature = Final pressure x Final Volume/Final Temperature => 17.15L

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Afina-wow [57]

Answer:

D. Graduated Cylinder

Explanation:

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2 years ago

zalisa [80]

Answer: There are $2.29\times 10^{23}$ formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{36.0g}{95g/mol}=0.38moles$

1 mole of $MgCl_2$ contains = $6.023\times 10^{23}$ formula units

Thus 0.38 moles of $MgCl_2$ contains = $\frac{6.023\times 10^{23}}{1}\times 0.38=2.29\times 10^{23}$ formula units

Thus there are $2.29\times 10^{23}$ formula units

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Mkey [24]

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Diano4ka-milaya [45]

D) 4Fe + 3O2 -> 2Fe3O3

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3 years ago