🎉 The Study-to-Win Winning Ticket number has been announced! Go to your Tickets dashboard to see if you won! 🎉View Winning Ticket

University of Toronto

Problem 1
Problem 2
Problem 3
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Problem 10
Problem 11
Problem 12
Problem 13
Problem 14
Problem 15
Problem 16
Problem 17
Problem 18
Problem 19
Problem 20
Problem 21
Problem 22
Problem 23
Problem 24
Problem 25
Problem 26
Problem 27
Problem 28
Problem 29
Problem 30
Problem 31
Problem 32
Problem 33
Problem 34
Problem 35
Problem 36
Problem 37
Problem 38
Problem 39
Problem 40
Problem 41
Problem 42
Problem 43
Problem 44
Problem 45
Problem 46
Problem 47
Problem 48
Problem 49
Problem 50
Problem 51
Problem 52
Problem 53
Problem 54
Problem 55
Problem 56
Problem 57
Problem 58
Problem 59
Problem 60
Problem 61
Problem 62
Problem 63
Problem 64
Problem 65
Problem 66
Problem 67
Problem 68
Problem 69
Problem 70
Problem 71
Problem 72
Problem 73
Problem 74
Problem 75
Problem 76
Problem 77
Problem 78
Problem 79
Problem 80
Problem 81
Problem 82
Problem 83
Problem 84
Problem 85
Problem 86
Problem 87
Problem 88
Problem 89
Problem 90
Problem 91
Problem 92
Problem 93
Problem 94
Problem 95
Problem 96
Problem 97
Problem 98
Problem 99
Problem 100
Problem 101
Problem 102
Problem 103
Problem 104
Problem 105
Problem 106
Problem 107
Problem 108
Problem 109
Problem 110
Problem 111
Problem 112
Problem 113
Problem 114
Problem 115
Problem 116
Problem 117
Problem 118
Problem 119
Problem 120
Problem 121
Problem 122
Problem 123
Problem 124
Problem 125
Problem 126
Problem 127
Problem 128
Problem 129
Problem 130
Problem 131
Problem 132
Problem 133
Problem 134
Problem 135
Problem 136
Problem 137
Problem 138
Problem 139
Problem 140

Problem 8

Calculate the molar mass of each of the following:

$$\begin{array}{llll}{\text { (a) } \operatorname{Sr}(\mathrm{OH})_{2}} & {\text { (b) } \mathrm{N}_{2} \mathrm{O}_{3}} & {\text { (c) } \mathrm{NaClO}_{3}} & {\text { (d) } \mathrm{Cr}_{2} \mathrm{O}_{3}}\end{array}$$

Answer

a) $\operatorname{Mr}\left(\operatorname{Sr}(\mathrm{OH})_{2}\right)=121,62 \mathrm{g} / \mathrm{mol}$

b) $\operatorname{Mr}\left(\mathrm{N}_{2} \mathrm{O}_{3}\right)=76,02 \mathrm{g} / \mathrm{mol}$

c) $\operatorname{Mr}\left(\mathrm{NaClO}_{3}\right)=106,44 \mathrm{g} / \mathrm{mol}$

d) $\operatorname{Mr}\left(\mathrm{Cr}_{2} \mathrm{O}_{3}\right)=98 \mathrm{g} / \mathrm{mol}$

You must be logged in to bookmark a video.

...and 1,000,000 more!

OR

Access this video now and improve your grades, **guaranteed**. **Study and win $10,000**. Cancel anytime.

Annual

$6.99/mo

30% off monthly price

billed $83.88 every 12 months

Quarterly

$8.99/mo

10% off monthly price

billed $26.97 every 3 months

Monthly

$9.99/mo

Pay as you go!

Unlimited access to over a million video solutions created by professors, teachers and educators

A community of 3,000,000 students & 20,000 educators.

Over 300 hours of STEM and Test Prep bootcamps

Ask unlimited questions

Unlimited personalized quizzes to test your knowledge.

And so much more!!

Unlimited access to over a million video solutions created by professors, teachers and educators

A community of 3,000,000 students & 20,000 educators.

Over 300 hours of STEM and Test Prep bootcamps

Ask unlimited questions

Unlimited personalized quizzes to test your knowledge.

And so much more!!

## Discussion

## Video Transcript

All right, so we have to found him with a mass off difference. Ah, chemical compound. The first real strong Liam hydroxide. So for finding money mess off different chemical compound which first did you found out about the mass off the individual elements. So far stronger anyway, 87.62 you can find from a testicle off from your periodic table. And if I lost, you were 16 hydrogen, everyone. So we have one strong. Um so we're 87.62 Ah, and then we have to hydroxide, which means we have two unit off oxygen and hydrogen, so we have to times 16 plus one. All right, so when you Yeah. When? When we looked at all the number together, we would have to over or on the mass. Ah, you would be corresponding to our strong hydroxide. Okay. When we follow the same coagulation, we should be able to find the west of it are the second commas and 203 ny Dinei Children try oxide. So we have Ah, we have to know nitrogen So naturally minutes roughly. Ah, about ah, look, a task book of our 14. So actually, I'm with other two. We have 14 town times, two plus three times 16 and then we should be able to find a 76 gram per mo for and two or three and then we'll phone. We have any CEO three. So we have sodium while their mother mass will be foreign 23 Cory with for five or six when we were 16 times for you. So I can just are cold later able to find it, Find out that is one those six Grampa Monroe and therefore crew die chromium um oxide Ah, for chromium Ah, we have favorites you for Quimper more from your passbook And then we have two of them from Mumbai to you and therefore oxygen were 16 someone by three and imagine to get over years to 105 grand per mo

## Recommended Questions

Calculate the molar mass of each of the following:

$$\begin{array}{llll}{\text { (a) } \mathrm{SnO}} & {\text { (b) } \mathrm{BaF}_{2}} & {\text { (c) } \mathrm{Al}_{2}\left(\mathrm{SO}_{4}\right)_{3}} & {\text { (d) } \mathrm{MnCl}_{2}}\end{array}$$

Calculate the molar mass of each of the following:

$$\begin{array}{llll}{\text { (a) } \mathrm{N}_{2} \mathrm{O}_{4}} & {\text { (b) } \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}} & {\text { (c) } \mathrm{MgSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}} & {\text { (d) } \mathrm{Ca}\left(\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{O}_{2}\right)_{2}}\end{array}$$

Determine the molar mass of each ionic compound.

\begin{equation}\begin{array}{ll}{\text { a. } \mathrm{NaOH}} & {\text { b. } \mathrm{CaCl}_{2}} & {\text { c. } \mathrm{KC}_{2} \mathrm{H}_{3} \mathrm{O}_{2}}\end{array}\end{equation}

Calculate the molar mass for each of the following:

a. $\mathrm{Cl}_{2}$

b. $\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{3}$

c. $\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}$

d. $\mathrm{AlF}_{3}$

e. $\mathrm{C}_{2} \mathrm{H}_{4} \mathrm{Cl}_{2}$

Calculate the molar mass of the following substances.

Calculate the molar mass of the following substances.

Calculate the molar mass of the following substances.

a.

b. $\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}$

c. $\mathrm{Na}_{2} \mathrm{HPO}_{4}$

Calculate the molar mass for each of the following:

a. $\mathrm{O}_{2}$

b. $\mathrm{KH}_{2} \mathrm{PO}_{4}$

c. $\mathrm{Fe}\left(\mathrm{ClO}_{4}\right)_{3}$

d. $\mathrm{C}_{4} \mathrm{H}_{8} \mathrm{O}_{4}$

e. $\mathrm{Ga}_{2}\left(\mathrm{CO}_{3}\right)_{3}$

Calculate the molar mass for a substance given its chemical formula; use molar mass to convert between grams and moles.

Calculate the number of moles in $25.0 \mathrm{g}$ of each of the following:

a. Ne

b. $\mathrm{O}_{2}$

c. $A I(O H)_{3}$

d. $\mathrm{Ga}_{2} \mathrm{S}_{3}$

Determine the molar mass of each compound listed in item 29. (Hint: See Sample Problem G.)