Methane and sulfur react to produce carbon disulfide (cs2), a liquid often used in the production of cellophane.
ch4(g) + s8(s) cs2(l) + h2s(g)
(a) balance the equation. (use the lowest possible coefficients. include states-of-matter under the given conditions in your answer.)
(b) calculate the moles cs2 produced when 2.12 mol s8 is used.
(c) how many moles h2s are produced?

a) 2CH4(g) + S8(s) → 2CS2(l) + 4H2S(g)

b) 4.24 moles CS2

c) 8.48 moles H2S

Explanation:

Step 1: The unbalanced equation

CH4(g) + S8(s) → CS2(l) + H2S(g)

(a) Balance the equation. (Use the lowest possible coefficients. Include states-of-matter under the given conditions in your answe.)

2CH4(g) + S8(s) → 2CS2(l) + 4H2S(g)

(b) Calculate the moles CS2 produced when 2.12 mol S8 is used.

For 2 moles CH4 we need 1 mol S8 to produce 2 moles CS2 and 4 moles H2S

For 2.12 moles S8 we'll have 2*2.12 = 4.24 moles CS2

(c) How many moles H2S are produced?

For 2 moles CH4 we need 1 mol S8 to produce 2 moles CS2 and 4 moles H2S

For 2.12 moles S8 we'll have 4*2.12 = 8.48 moles H2S

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer