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1. Calulate the atomic mass of the following elements given this set of data k-3

ID: 794781 • Letter: 1

Question

1. Calulate the atomic mass of the following elements given this set of data


k-39    92.36%

k-40    1.01%

k-41    6.73%


2. Calculate the atomic mass of X given the precise atomic masses and the percent abundance of each isotope of the element x below


x-13   12.98504     78.70%

x-15    14.98584    10.13%


3. You are given the following symbol  231Ra


    What is the Atomuc number

    What is the Atomic Mass?

    What is the number of P+

    What is the number of N

    What is the number of e

   What is the Charge


4. You are given the following symbol  212Po


    What is the Atomuc number

    What is the Atomic Mass?

    What is the number of P+

    What is the number of N

    What is the number of e

   What is the Charge

Explanation / Answer

1) 39.18 amu

2) 13.5 amu

3) symbol 231Ra

the Atomuc number = 88

the Atomuc mass = 231 u

number of P+ = 88

number of N = 143

number of e = 88

the Charge = 0


4) symbol 212Po

the Atomuc number = 84

the Atomuc mass = 211 u

number of P+ = 84

number of N = 128

number of e = 84

the Charge = 0