Chemistry short answer questions for midyear Exam 100% Updated!!
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Course
Chemistry short
Institution
Chemistry Short
Calculate the average atomic mass of element X if the percentage is abundant isotopes are as follow X-12 is 98.5% X-13 is 1% X-14 is 0.5% - ANSWER Average Atomic Mass = 12 X 98.5 + 13 X 1 + 14 X 0.5 / 100
= 12.02 AMU
Calculate the mass of metallic cuboid with measurements 5cm, 3cm, and 1cm, if...
Chemistry short answer questions for
midyear Exam 100% Updated!!
Calculate the average atomic mass of element X if the percentage is abundant isotopes are as follow
X-12 is 98.5% X-13 is 1% X-14 is 0.5% - ANSWER Average Atomic Mass = 12 X 98.5 + 13 X 1 + 14 X
0.
= 12.02 AMU
Calculate the mass of metallic cuboid with measurements 5cm, 3cm, and 1cm, if its density is
19.8g/ml (D = M/V) - ANSWER V = 5 X 3 X 1 = 15cm^3
M = D X V = 19.8 X 15 = 297g
How many milligrams are in 0.0000454 grams - ANSWER 0.0000454g X 1000mg/1g
= 0.0454mg
Draw the electron configuration of following elements:
Li: Atomic N: 3, Mass: 7
Si: Atomic N: 14 Mass: 28
Ar: Atomic N 18. Mass: 40
Ca: Atomic N 20 Mass: 40 - ANSWER Li P+ 3.
N 4. ) )
21
Si P+ 14
N. 14. ) ) )
284
Ar P+ 18
N 22. ) ) )
288
Ca P+ 20
N 20 ) ) ) )
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