Question detail
If 10 g of magnesium oxide (MgO) is produced from the reaction of magnesium with oxygen, calculate the number of moles of magnesium oxide formed.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Use of amount of substance in relation to masses of pure substances
Question
If 10 g of magnesium oxide (MgO) is produced from the reaction of magnesium with oxygen, calculate the number of moles of magnesium oxide formed.
Answer
0.125 mol
Explanation
This answer is strong as it shows the correct application of the moles from mass formula, demonstrating the student's ability to calculate moles based on the mass of a compound. It tests the understanding of the relationship between mass and moles.
Common mistake
Significant Figures Confusion
Students often round their final answers to an inappropriate number of significant figures, ignoring the precision of the given data.
Always determine the number of significant figures based on the least precise measurement in your calculations and round your final answer accordingly.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.