Exercise 3.68 with feedback Calculate the mass (in grams) of each sample. Part A

Question

Exercise 3.68 with feedback

Calculate the mass (in grams) of each sample.

Part A

1.1×1025 O3 molecules

Express your answer to two significant figures and include the appropriate units.

SubmitMy AnswersGive Up

Part B

8.89×1019 CCl2F2 molecules

Express your answer to three significant figures and include the appropriate units.

SubmitMy AnswersGive Up

Part C

9 water molecule(s)

Express your answer to four significant figures and include the appropriate units.

Exercise 3.68 with feedback

You may want to reference ( pages 107 - 109) section 3.8 while completing this problem.

Calculate the mass (in grams) of each sample.

Part A

1.1×1025 O3 molecules

Express your answer to two significant figures and include the appropriate units.

mO3 =

SubmitMy AnswersGive Up

Part B

8.89×1019 CCl2F2 molecules

Express your answer to three significant figures and include the appropriate units.

mCCl2F2 =

SubmitMy AnswersGive Up

Part C

9 water molecule(s)

Express your answer to four significant figures and include the appropriate units.

Explanation / Answer

part-A

6,023*1023 molecule of O3 mass is 48gm

1.1*1025 molecule of O3 mass is = 48*1.1*1025/6.023*1023

                                                = 8.8*102gm

part-B

6.023*1023 molecules of CCl2F2 mass is 121gm

8.89*1019 molecules of CCl2F2 mass is = 121*8.89*1019/6.023*1023

                                                         = 178*10-4

                                                        = 1.78*10-2 gm

part-C

6.023*1023 molecule of H2O mass is 18gm

9 molecule of H2O mass   = 18*9/6.023*1023

                                    = 26.89*10-23

                                 = 2.689*10-22 gm

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

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