Final answer:
The question seems to be incorrectly framed, but it addresses the concept of limiting reactants in chemistry. A pair of gloves is akin to a chemical reaction where the number of complete pairs is dictated by the lesser quantity, similar to a limiting reactant in a chemical equation.
Step-by-step explanation:
The question 'How many days does a pair of heat-resistant kitchen gloves get before being replaced?' doesn't specify the lifecycle or durability of kitchen gloves, rather it seems to be a misphrased question intended to ask about the concept of limiting reactants from a chemistry perspective. If we apply the concept of limiting reactants to a real-life example involving gloves, we can explain that when you're pairing left- and right-handed gloves, the number of complete pairs you end up with is limited by the type of glove in lesser quantity. In the example given, if you have 50 left-handed gloves and 40 right-handed gloves, the number of complete pairs is limited to 40 because you cannot complete more pairs without additional right-handed gloves. This leaves you with an excess of 10 left-handed gloves, similar to how a reaction is limited by the reactant that is completely used up first, with the other reactant remaining in excess.