I’m pretty sure the answer is A.
Answer: 2755.2 g of 
will be produced from 24.6 mol of haematite.
Explanation:
The balanced chemical equation is:
According to stoichiometry :
1 mole of 
produce = 2 moles of
Thus 24.6 moles of will produce=
of
Mass of 
Thus 2755.2 g of will be produced from 24.6 mol of haematite.
If it ABC or D it would be D
Asteroids in the main asteroid belt at certain distances from the Sun are in an orbital resonance with Jupiter, the period of a belt asteroid in an 11:5 orbital resonance with Jupiter is mathematically given as
TA=5.4090years
<h3>What is the period of a belt asteroid in an 11:5 orbital resonance with Jupiter?</h3>
Generally, the equation for the ratio is mathematically given as
asteroid in an 11:5 orbital resonance= 11/5
Therefore, with Jupiter at
TJ=11.9years
Hence
11/4=TJ/TA
TA=5/11)*11.9
TA=5.4090years
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