Lexi is balancing equations. She is finding one equation to be very difficult to balance. Which explains how to balance the equa
1 answer:
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Answer:- B: is the right answer.
Solution:- The balanced equation is:
We have been given with 8.75 grams of oxygen and asked to calculate the grams of hydrogen needed to react with given grams of oxygen according to the balanced equation.
From balanced equation, 1 mole of oxygen reacts with 2 moles of hydrogen.
So, let's convert grams of oxygen to moles and multiply it by the mole ratio to calculate the moles of hydrogen that are easily converted to grams on multiplying by it's molar mass.
The complete set up looks as:
=
Hence, the right option is B: .
<u>Answer:</u>
<em>0.264 g of can be formed from 288 mg of
</em>
<u>Explanation:</u>
The balanced chemical equation is
The conversions are
Mass in mg is converted to mass in g
Mass in g is converted to moles
by dividing with molar mass
Moles is converted to moles
by using the mole ratio of
is 9 : 6
Moles is converted to mass
by multiplying with molar mass
mass in mg > mass in g
>moles
> moles
> mass
=0.264g (Answer)