Answer:
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<u>Answer:</u> The percent composition of
in taconite is 37.6 %.
<u>Explanation:</u>
We are given:
Mass of taconite pellets = 1 ton = 907185 g (Conversion factor: 1 ton = 907185 g)
Mass of iron produced = 545 lb = 247212 g (Conversion factor: 1 lb = 453.6 g )
We know that:
Molar mass of iron = 55.85 g/mol
Molar mass of
= 231.53 g/mol
1 mole of
contains 3 moles of iron atom and 4 moles of oxygen atom
(3 × 55.85) = 167.55 g of iron is produced from 231.53 grams of 
So, 247212 grams of iron will be produced from =
of 
To calculate the percentage of
in taconite, we use the equation:

Mass of taconite = 907185 g
Mass of
= 341611.43 g
Putting values in above equation, we get:

Hence, the percent composition of
in taconite is 37.6 %.
Sorry I really don’t know I was trying to help and get points it might be D
12.2 C
It has 3 significant figures now.
Answer:
Hey mate, here is your answer. Hope it helps you.
Explanation:
The balanced equation is 2Na+2H2O———-> 2NaOH +H2.