Amu & Element Isotope – Chemistry Final Exam
The key terms of Chemistry Final Exam include, Element, Isotope, Mass, Abundance, Amu.
I created a new element called Nalbandianium. It has 3 isotopes. The first isotope has a mass of 56.78 amu with an abundance of 43.56% the second isotope has a mass of 58.89 amu with an abundance of 7.89% the third isotope has a mass of 60.55 amu with and abundance of 48.55%. What is the average mass of Nalbandianium?
58.77amu
56.77amu
58.78amu – correct
56.78amu
What charge does group 6A tend to form?
+1
-1
+2
-2 – correct
Classify the element Mg
metalloid
metal – correct
nonmetal
No answer text provided.
Classify the element Si
metalloid – correct
nonmetal
No answer text provided.
metal
I created a new element called Nalbandianium. It has 3 isotopes. The first isotope has a mass of 56.78 amu with an abundance of 43.56% the second isotope has a mass of 58.89 amu with an abundance of 7.89% the third isotope has a mass of 60.55 amu with and abundance of 48.55%. What is the average mass of Nalbandianium?
56.77amu
58.78amu – correct
56.78amu
58.77amu
How many bitcoin can someone buy if one bitcoin costs 9345 US Dollars and a person has 6.78×106 Special Dollars?
1 US Dollar = 9.4 Special Dollars
6.82×103BTC
5.99×1011BTC
0.0682BTC
77.2BTC – correct
The special dollars were not a huge hit with a lot of people so the government started a new currency called big dollars. 1 US Dollar = 0.057 Big Dollars.
How many big dollars does it take to buy a 25.00 cent candy? (hint 100 cents = 1 US Dollar)
0.4386Big Dollars
142.5 Big Dollars
0.01425Big Dollars – correct
57.65Big Dollars
I drove and logged a total of 1297km and I filled up my gas tank 3 times, my gas tank can hold 25 liters. What is my mileage/gallon for this trip?
Use the conversion factors:
3.8Liter=1gallon
1.609km=1mile
27.6mi/gal
38mi/gal
282mi/gal
41mi/gal – correct
What is the specific heat capacity of an unknown substance if: The temperature increases from 67C to 98C and 7.2J of energy was absorbed. The mass of this unknown substance is 7.9g.
0.029J/gC – correct
0.094J/gC
0.91J/gC
0.23J/gC
If I put tree branches in a wood chipper and I turn the branch in to wood chips is this an example of a chemical change?
True
False – correct
If I bake some cookies for my significant other for valentines day, when the cookies are nice and golden is this a chemical or physical change?
Chemical – correct
Physical
I found 1.00×1011 pennies in an old abandoned mine. What is my financial value?
A trillionare
A billionare – correct
A dollarare
A thousandare
A millionare
If a car gets 38miles/gallon. What is this value in kilometers/milliliter?
0.01573
0.016 – correct
16
15.73
On planet nalbandian there is a unit call nalos. 1 mile = 3.7 nalos. If you run 12.3 miles on earth how many nalos did you run?
46
3.3
3.32
45.5 – correct
On planet nalbandian there is a time unit called nans. 5.6 seconds = 1 nan. If it takes me 98 seconds to brush my teeth on earth how many nans did it take?
18
5488
17.5 – correct
5.6
I created a new element called Nalbandianium. It has 3 isotopes. The first isotope has a mass of 56.78 amu with an abundance of 43.56% the second isotope has a mass of 58.89 amu with an abundance of 7.89% the third isotope has a mass of 60.55 amu with and abundance of 48.55%. What is the average mass of Nalbandianium?
58.77amu
56.77amu
58.78amu – correct
56.78amu
What charge does group 6A tend to form?
+1
-1
+2
-2 – correct
Classify the element Mg
metalloid
metal – correct
nonmetal
No answer text provided.
Classify the element Si
metalloid – correct
nonmetal
No answer text provided.
metal