A #10g# mass of aluminum reacts with a #19g# mass of oxygen gas. Which is the reagent in deficiency?

Answer 1

#2Al + 3/2O_2 rarr Al_2O_3#

The difficult part—solving the chemical equation that must be balanced in order for these kinds of reactions to occur—is done.

Moles of aluminum, #(10*g)/(26.98*g*mol^(-1)#; versus moles of dioxygen, #(19*g)/(32.00*g*mol^(-1)#. Given a calculator it should be easy to see the reagent in deficiency. Remember you have to account for the reaction's stoichiometry: 4 moles of aluminum require 3 moles of oxygen for reaction.

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Answer 2

Luna Chen

The reagent in deficiency is aluminum.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

A #10*g# mass of aluminum reacts with a #19*g# mass of oxygen gas. Which is the reagent in deficiency?

A #10g# mass of aluminum reacts with a #19g# mass of oxygen gas. Which is the reagent in deficiency?