Question

Find the mass of 0.50 moles of CH4

Answer 1

Answer:

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Explanation:

In 1 mole mass of CH4 is 1 mole of C + 4 moles of H = 12 + 4 = 16 g

Therefore the mass of 0.50 moles of CH4 = 16 /2 = 8g

Answer 2

Number of moles= given mass/molar mass......(i)
It is given that the number of moles are 0.5
And for molar mass we will add the mass of all atoms
=>Mass of C=12+Mass of hydrogen=1
Here there are 4 hydrogen atoms hence mass of hydrogen =4
Now add them which will give us the MOLAR MASS=12+4=16
Therefore substituting the value in (i) we will get
.5*16=8g.......which is the answer
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