Copper reacts with sulfur to form copper (I) sulfide according to the following equation: 2Cu + S → Cu2S What is the limiting reactant when 55g Cu reacts with 45.0g S?
Reactants:
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Limiting Reactant:

Explain why scientists use shared characteristics to make cladograms.

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution