6 Which of the following would provide the best evidence that air is made of matter? A Making a small hole in a tire and measuri
ng the amount of time it takes for it to become flat B Comparing the mass and volume of an empty balloon to the mass and volume of an inflated balloon C Measuring the temperature of the air in several rooms of varying sizes D Finding the volume of the air between marbles in a jar by pouring water over them
1 answer:
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Answer:
Z=22.70
Explanation:
It is given that,
An element Z that has two naturally occurring isotopes with the following percent abundances as follows :
The isotope with a mass number 22 is 65.0% abundant; the isotope with a mass number 24 is 35.0% abundant.
The average atomic mass for element Z is given by :
So, the average atomic mass for element Z is 22.70.