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Copper reacts with sulfur to form copper (i) sulfide, according to the balanced equation below. 2cu s → cu2s given that there are 40.2 g cu and 14.1 g s, complete the steps below to determine the limiting and excess reactants in the last question. how many moles are in 40.2 g cu? mol cu how many moles are in 14.1 g s? mol s

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Oseni

The limiting reactant would be Cu and the excess reactant would be S.

Stoichiometric reactant

From the equation:

     2Cu + S → Cu2S

Mole ratio of Cu to S = 2:1

Mole of 40.2 g Cu = 40.2/63.55

                                 = 0.63 moles

Mole of 14.1 g of S = 14.1/32.07

                                     = 0.44 moles

Equivalent mole of Cu = 0.44 x 2 = 0.88 moles

Thus, Cu is limiting while S is in excess.

More on stoichiometric calculations can be found here: https://brainly.com/question/8062886

YumPuff

Answer:

The first two are 0.633 and 0.440

The answer for the next sentence is Copper and Sulfur