Please Help !!!!!!


Isotopes of pennium

2.Calculate the average atomic mass of each isotope.(Average atomic mass=total mass of Pennies of each isotope divided the number of Pennies of that isotope)


3. Using the fractional abundance and the average atomic mass of each isotope, calculate the
atomic mass of Pe (multiply).

Analysis

1. Was the mass of 20 pennies equal to 20 times the mass of one penny? Explain?

2. In what year(s) did the mass of Pe change? How could you tell?

3. How can you explain the fact that there are different "isotopes" of pennium?

4. Why is the element "pennium" a good analogy or model for actual element isotopes? In what ways is the analogy misleading or incorrect?

5. Titanium has five common isotopes:
46Ti (8.00%), mass= 45.953 amú
47 T: (7.80%), mass= 46.952 amu
4T (73.40%), mass= 47.947 amu
4STi (5.50%), mass= 48.948 amu
50Ti (5.30%), mass = 49.945 amu
Calculate the average atomic mass of titanium.

6. Copper has two isotopes, copper-63, and copper-65. The relative abundance of
copper-63 is 69.1% and copper-65, 30.9%. Calculate the average atomic mass of
copper.