I am trying to learn how to solve this problem and the steps to reach the answer

Question

I am trying to learn how to solve this problem and the steps to reach the answer and where in the chart each step would be placed.

Question 21 (4 points) The compound 1-propanethiol, which is the eye irritant released when fresh onions are chopped up, has the chemical formula C3H8S. How many molecules of this irritant compound are present in a 5.000 B sample of the compound? Have Factor 2. 3. Factor 6. Report your answers to 1,2,3,4,5,and 6. Blank # 1 Blank # 2 Blank # 3 Blank # 4 Blank # 5 Blank # 6

Explanation / Answer

Use the molar mass of 1-propanethiol to convert the number of grams to moles

1. Molar mass of C3H8S = 76.1606 g/mol

2. Mass of C3H8S = 5.000 g

3. Moles of C3H8S = Mass of C3H8S/ Molar mass of C3H8S

= 5.000g / 76.1606 g/mol

= 0.06565 moles

4. Next, use Avogadro's constant to calculate how many molecules of C3H8S are present in the sample

Avogadro's constant = 6.022 x 10^23 /mol

5. Molecules C3H8S = 0.06565 moles C3H8S x (6.022 x 10^23molecules C3H8S/1mole C3H8S)

= 3.953 x 10^22 molecules C3H8S

6. 3.953 x 10^22 molecules C3H8S present in 5.000 g sample.

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.