Questions: A student weighs out 20.93 grams of sodium permanganate, NaMnO4. How many moles of NaMnO4 is this? The molar mass of NaMnO4 is 141.93 g / mol. Use the standard abbreviation for the units.

A student weighs out 20.93 grams of sodium permanganate, NaMnO4. How many moles of NaMnO4 is this? The molar mass of NaMnO4 is 141.93 g / mol. Use the standard abbreviation for the units.
Transcript text: A student weighs out 20.93 grams of sodium permanganate, $\mathrm{NaMnO}_{4}$. How many moles of $\mathrm{NaMnO}_{4}$ is this? The molar mass of $\mathrm{NaMnO}_{4}$ is $141.93 \mathrm{~g} / \mathrm{mol}$. Use the standard abbreviation for the units. Your Answer: $\square$ Answer $\square$ units
failed

Solution

failed
failed

Solution Steps

Step 1: Identify the given values

We are given:

  • Mass of sodium permanganate, $\mathrm{NaMnO}_{4}$: 20.93 grams
  • Molar mass of $\mathrm{NaMnO}_{4}$: 141.93 g/mol
Step 2: Use the formula to calculate moles

The formula to calculate the number of moles is: \[ \text{moles} = \frac{\text{mass}}{\text{molar mass}} \]

Step 3: Substitute the given values into the formula

\[ \text{moles} = \frac{20.93 \, \text{g}}{141.93 \, \text{g/mol}} \]

Step 4: Perform the calculation

\[ \text{moles} = \frac{20.93}{141.93} \approx 0.1475 \, \text{mol} \]

Final Answer

\[ \boxed{0.1475 \, \text{mol}} \]

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
With the information given below, can you conclude that triangle LMN is congruent to triangle XYZ? Yes No
failedAnswered
Which of the following is a basic principle of the cheating and plagiarism policy? The university does not give credit for a plagiarized assignment Students cannot hand in the same work for two different classes Students who do not believe they are being treated fairly can appeal a faculty sanction All of the above Which of the following are ways to avoid plagiarism? Avoid "copying and pasting" Use citations to acknowledge words and ideas borrowed from other works. Keep track of the sources you use All of the above
failedAnswered
Fifty-seven percent of families say that their children have an influence on their vacation plans. Consider a sample of eight families who are asked if their children influence their vacation plans. What is the probability that exactly three families say that their children have an influence on their vacation plans.
failedAnswered
Which of the following shows the correct solution steps and solution to 4x + 9 = -23?
failedAnswered
Mrs. Burke's mathematics class has 102 students, classified by academic year and major, as illustrated in the table. Mrs. Burke randomly chooses one student to collect yesterday's work. Mrs. Burke's Mathematics Class Academic Year Mathematics Majors Non-Mathematics Majors ------------- ------------------ ---------------------- Freshmen 14 16 Sophomores 13 11 Juniors 17 9 Seniors 10 12 Step 1 of 2: What is the probability that she selects a mathematics major, given that she chooses randomly from only the sophomores? Enter a fraction or round your answer to 4 decimal places, if necessary.