How many moles of iron in a #50*lb# mass of iron?

Answer 1

#a.# #"Formula mass"# #=# #(2xx55.85+3xx15.999)*g*mol^-1#.

#b.# If you have a #50*lb# mass, AND #1*lb-=454*g# (I don't know, I don't use these units, especially as the States has its own special variety), then..........
#"Mass of iron in grams"-=50*cancel(lb)xx454*g*cancel(lb^-1)=??lbs#
#"Moles of iron"# #=# #(50*lbxx454*g*lb^-1)/((2xx55.85+3xx15.999)*g*mol^-1)=142*mol#.
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Answer 2

To calculate the number of moles of iron in a 50-pound mass of iron, you need to first convert the mass from pounds to grams, and then use the molar mass of iron to find the number of moles.

1 pound is approximately equal to 453.592 grams.

The molar mass of iron (Fe) is approximately 55.845 grams per mole.

First, convert the mass from pounds to grams: [ 50 , \text{pounds} \times 453.592 , \text{grams/pound} = 22679.6 , \text{grams} ]

Then, calculate the number of moles of iron: [ \text{Number of moles} = \frac{\text{Mass in grams}}{\text{Molar mass}} ] [ \text{Number of moles} = \frac{22679.6 , \text{grams}}{55.845 , \text{grams/mol}} ]

[ \text{Number of moles} \approx 406.07 , \text{moles} ]

Therefore, there are approximately 406.07 moles of iron in a 50-pound mass of iron.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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