Mathematics, 04.12.2020 04:40 amazinpye
the element born has two stable isotopes. boron-10 has an atomic mass of 10.0129 and a percentage in nature of 19.78% the atomic mass of boron-11 is 11.0093 and its percentage in nature is 80.22% what is the average atomic mass for boron?
Answers: 2
Mathematics, 21.06.2019 18:00
Carmen begins her next painting on a rectangular canvas that is 82.7 cm long and has a area of 8,137.68 cm2. will the painting fit in a frame with an opening that is 82.7 cm long and 95 cm wide? explain
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Mathematics, 21.06.2019 22:00
The coordinates r(1, -3), s(3, -1) t(5, -7) form what type of polygon? a right triangle an acute triangle an equilateral triangle an obtuse triangle
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Mathematics, 21.06.2019 22:40
Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?
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the element born has two stable isotopes. boron-10 has an atomic mass of 10.0129 and a percentage in...
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