Examlex

Solved

What Is the Percent Yield If 122 Grams of SiO2

question 58

Multiple Choice

What is the percent yield if 122 grams of SiO2 are made from 246 g of Cr2O3 by the following equation? 3 Si(s) + 2 Cr2O3(s) → 3 SiO2(s) + 4 Cr(l)


Definitions:

Preexisting Duty Rule

A principle in contract law stating that performing or promising to perform a duty already owed under contract does not constitute valid consideration for a new promise.

Unforeseen Difficulties

Unexpected challenges or obstacles that were not anticipated, making a task or goal harder to achieve.

Preexisting Duty

An obligation that a party is already legally bound to perform, which cannot serve as consideration for a new contract.

Foreseen Difficulty

An anticipated challenge or problem that can be predicted based on current knowledge or trends.

Related Questions