The answer is 42 neutrons
The balanced chemical reaction is written as:
<span>4C(s) + S8(s) → 4CS2(l)
We are given the amount of carbon and sulfur to be used in the reaction. We need to determine first the limiting reactant to be able to solve this correctly.
</span>7.70 g C ( 1 mol / 12.01 g) =0.64 mol C
19.7 g S8 ( 1 mol / 256.48 g) = 0.08 mol S8
The limiting reactant would be S8. We use this amount to calculate.
0.08 mol S8 ( 4 mol CS2 / 1 mol S8 ) ( 256.48 g / 1 mol ) = 78.8 g CS2
Given :
Volume of stock solution,
.
Volume of diluted solution,
.
Molarity of diluted solution,
.
To Find :
The concentration of the stock solution.
Solution :
We know, dilution factor is given by :
....1)
and
....2)
Putting volume in above equation, we get :
D.F = 400/20
D.F = 20
Putting value of D.F in equation 2) we get :

The concentration of stock solution is nearest to 30 M.
Therefore, the correct option is 1) 30 M.
Answer:
and can cause changes in motion. Inertia.
Explanation: