No, it does not. I believe it's false.
Answer is: mass of unused sulfur is 5.87 grams.
Balanced chemical reaction: C + 2S → CS₂.
m(C) = 12.0 g; mass of carbon.
m(S) = 70.0 g; mass of sulfur.
n(C) = m(C) ÷ M(C).
n(C) = 12 g ÷ 12 g/mol.
n(C) = 1 mol; amount of substance.
n(S) = m(S) ÷ M(S).
n(S) = 70 g ÷ 32.065 g/mol.
n(S) = 2.183 mol.
From chemical reaction: n(C) : n₁(S) = 1 : 2.
n₁(S) = 1 mol · 2 = 2 mol.
Δn(S) = n(S) - n₁(S).
Δn(S) = 2.183 mol - 2 mol.
Δn(S) = 0.183 mol; amount of unused sulfur.
Δm(S) = 0.183 mol · 32.065 g/mol.
Δm(S) = 5.87 g.
Answer:
catalysts help speed up reactions which implies that they provide a alternative pathway and when there is less activation energy more particles have more energy to react
Answer:
<h2>1.43 g/cm³</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass = 84.7 g
volume = 59.3 cm³
We have

We have the final answer as
<h3>1.43 g/cm³</h3>
Hope this helps you
Answer : The partial pressure of X and Y gases are, 0.525 and 1.575 atm respectively.
Explanation : Given,
Moles of X = 2.0 mole
Moles of Y = 6.0 mole
Total pressure = 2.1 atm
Now we have to calculate the mole fraction of X and Y.


and,


Now we have to calculate the partial pressure of X and Y.
According to the Raoult's law,

where,
= partial pressure of gas
= total pressure of gas = 2.1 atm
= mole fraction of gas


and,


Thus, the partial pressure of X and Y gases are, 0.525 and 1.575 atm respectively.