homework from page 104. 15. boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8%...
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![Page 1: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/1.jpg)
Homework from page 104
![Page 2: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/2.jpg)
Homework from page 10415. Boron has two isotopes.
boron-10 mass = 10.013 amu
abundance = 19.8%
Boron-11
mass = 11.009 amu
abundance = 80.2%
Calculate its atomic mass.
![Page 3: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/3.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
boron-10 mass = 10.013 amu
abundance = 19.8%
Boron-11
mass = 11.009 amu
abundance = 80.2%
![Page 4: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/4.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
boron-10 mass = 10.013 amu
abundance = 19.8%
Boron-11
mass = 11.009 amu
abundance = 80.2%
![Page 5: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/5.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
10.013 amu
x 19.8%
11.009 amu
x 80.2%
![Page 6: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/6.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
10.013 amu
x .198
11.009 amu
x .802
![Page 7: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/7.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
10.013 amu
x .198
1.983
11.009 amu
x .802
8.929
![Page 8: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/8.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
10.013 amu
x .198
1.983
11.009 amu
x .802
8.829
![Page 9: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/9.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
1.983 + 8.829
![Page 10: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/10.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
1.983 + 8.829 10.812 amu
![Page 11: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/11.jpg)
Homework from page 104(mass x abundance) + (mass x abundance)
1.983 + 8.829 10.812 amu
![Page 12: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/12.jpg)
Homework from page 10416.Helium has two naturally
occurring isotopes, helium-3 and helium-4.
The atomic mass of helium is 4.003 amu.
Which isotope is more abundant in nature?
![Page 13: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/13.jpg)
Homework from page 10416.Helium has two naturally
occurring isotopes, helium-3 and helium-4.
The atomic mass of helium is 4.003 amu.
Which isotope is more abundant in nature?
![Page 14: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/14.jpg)
Homework from page 10417.Calculate the atomic mass of
magnesium. Three isotopes are:
mass = 23.985 amu, abund. = 78.99%
mass = 24.986 amu, abund. = 10.00%
mass = 25.982 amu, abund. = 11.01%
![Page 15: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/15.jpg)
Homework from page 104
(mass x abundance)
mass = 23.985 amu, abund. = 78.99%
mass = 24.986 amu, abund. = 10.00%
mass = 25.982 amu, abund. = 11.01%
![Page 16: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/16.jpg)
Homework from page 104
(mass x abundance)
23.985 x 78.99%
24.986 x 10.00%
25.982 x 11.01%
![Page 17: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/17.jpg)
Homework from page 104
(mass x abundance)
23.985 x .7899
24.986 x .1000
25.982 x .1101
![Page 18: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/18.jpg)
Homework from page 104
(mass x abundance)
23.985 x .7899 = 18.95 amu
24.986 x .1000 = 2.498 amu
25.982 x .1101 = 2.861 amu
![Page 19: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/19.jpg)
Homework from page 104
(mass x abundance)
18.95 amu
2.498 amu
+ 2.861 amu
![Page 20: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/20.jpg)
Homework from page 104
(mass x abundance)
18.95 amu
2.498 amu
+ 2.861 amu 24.31 amu
![Page 21: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/21.jpg)
Homework from page 104
(mass x abundance)
18.95 amu
2.498 amu
+ 2.861 amu 24.31 amu
![Page 22: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/22.jpg)
Homework from page 10421. Nitrogen has two naturally
occurring isotopes, N-14 and N-15.
The atomic mass of nitrogen is 14.007 amu.
Which isotope is more abundant in nature?
![Page 23: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/23.jpg)
Homework from page 10421. Nitrogen has two naturally
occurring isotopes, N-14 and N-15.
The atomic mass of nitrogen is 14.007 amu.
Which isotope is more abundant in nature?
![Page 24: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/24.jpg)
Daily Quiz
![Page 25: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/25.jpg)
1. What element has 47 protons?
A. iron (Fe)
B. silver (Ag)
C. titanium (Ti)
D. platinum (Pt)
E. uranium (U)
Daily Quiz
![Page 26: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/26.jpg)
2. What element has 12 electrons?
A. magnesium (Mg)
B. beryllium (Be)
C. chromium (Cr)
D. phosphorus (P)
E. carbon (C)
Daily Quiz
![Page 27: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/27.jpg)
3. How many neutrons are in helium?
A. 1
B. 2
C. 3
D. 4
E. 5
Daily Quiz
![Page 28: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/28.jpg)
4. How many protons are in sodium?
A. 1
B. 3
C. 11
D. 12
E. 23
Daily Quiz
![Page 29: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/29.jpg)
4. How many electrons are in neon?
A. 1
B. 8
C. 10
D. 18
E. 20
Daily Quiz
![Page 30: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/30.jpg)
5. How many neutrons are in carbon?
A. 2
B. 4
C. 6
D. 8
E. 12
Daily Quiz
![Page 31: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/31.jpg)
1. What element has 47 protons?
A. iron (Fe)
B. silver (Ag)
C. titanium (Ti)
D. platinum (Pt)
E. uranium (U)
Daily Quiz
![Page 32: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/32.jpg)
1. What element has 47 protons?
A. iron (Fe)
B. silver (Ag)
C. titanium (Ti)
D. platinum (Pt)
E. uranium (U)
Daily Quiz
![Page 33: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/33.jpg)
2. What element has 12 electrons?
A. magnesium (Mg)
B. beryllium (Be)
C. chromium (Cr)
D. phosphorus (P)
E. carbon (C)
Daily Quiz
![Page 34: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/34.jpg)
2. What element has 12 electrons?
A. magnesium (Mg)
B. beryllium (Be)
C. chromium (Cr)
D. phosphorus (P)
E. carbon (C)
Daily Quiz
![Page 35: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/35.jpg)
3. How many neutrons are in helium?
A. 1
B. 2
C. 3
D. 4
E. 5
Daily Quiz
![Page 36: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/36.jpg)
4. How many protons are in sodium?
A. 1
B. 3
C. 11
D. 12
E. 23
Daily Quiz
![Page 37: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/37.jpg)
4. How many electrons are in neon?
A. 1
B. 8
C. 10
D. 18
E. 20
Daily Quiz
![Page 38: Homework from page 104. 15. Boron has two isotopes. boron-10 mass = 10.013 amu abundance = 19.8% Boron-11 mass = 11.009 amu abundance = 80.2% Calculate](https://reader036.vdocuments.mx/reader036/viewer/2022062300/56649e2d5503460f94b1c6c7/html5/thumbnails/38.jpg)
5. How many neutrons are in carbon?
A. 2
B. 4
C. 6
D. 8
E. 12
Daily Quiz