Homework Answers
Atomic weight can be calculated by using following formula
atomic weight= massa × fracta + massb × fracb+ massc × fracc
Where, a,b and c are used for first,second and third isotopes.
We need to convert percentage into fractions by dividing each percentage term by 100.
Now,
Atomoic weight = 27.977 × 0.9223 + 28.976 × 0.04679 + 29.974 × 0.031
= 25.8031871 + 1.35578704 + 0.929194
= 28.0881681
= 28.09 amu
Therefore, first option is the right option.
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Please help me solve this homework problem. I have the problem done I just want to...
Please help me solve this homework problem. I have the problem done
I just want to check my answers to make sure they are correct. Here
is a picture of the blank page.
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References Naturally occurring element X exists in three isotopic forms: X-28 (27.970 amu, 92.21% abundance), X-29 (28.976 amu, 4.70% abundance), and X-30 (29.974 amu, 3.09% abundance). Calculate the atomic weight of X A. 25.79 amu B. 28.08 amu C. 86.92 amu D. 35.28 amu E. 29.08 amu Submit Answer Try Another Version 1 item attempt remaining
QUESTION 1 The formula mass of ammonium phosphite, (NH 4) 3PO 3, is a. 153.11 amu O b. 125.01 amu c. 97.01 amu d. 133.09 amu QUESTION 2 Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abundance), and X-30 (29.974 amu, 3.10% abundance). Calculate the atomic weight of X. a. 27.16 amu b.28.97 amu O c. 86.93 amu d. 48.63 amu e. 28.09 amu QUESTION 3 Balance the following equation...
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Please help me solve this homework problem. I have the problem done
I just want to check my answers to make sure they are correct. Here
is a picture of the blank page.
2) Which of the following is an example of a quantitative observation? a) The piece of metal is longer than the piece of wood. b) Solution 1 is much darker than solution 2. c) The liquid in beaker A is blue. d) The temperature of the liquid...
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