Chemistry, 10.07.2019 12:00, trisngle2565
Acertain element (x) has isotopes with mass numbers of 10 and 11. the x-10 isotope has an atomic mass of 10.013, and it represents 19.9% of all atoms of this element. the x-11 isotope has an atomic mass of 11.009, and it represents 80.1% of all atoms of this element. therefore, the average atomic mass, or atomic weight, of this element is amu.
Answers: 1
Chemistry, 22.06.2019 09:00, boxergirl2062
Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?
Answers: 3
Chemistry, 22.06.2019 20:00, ahnorthcutt4965
Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line
Answers: 1
Acertain element (x) has isotopes with mass numbers of 10 and 11. the x-10 isotope has an atomic mas...
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