Know your istopes.
Chemistry
Level
pending
Boron has two isotopes with relative isotopic masses of 10 and 11. When 1.00 g of boron reacts completely with hydrogen, 1.278 g of boron hydride, B2H6, is produced. What is the ratio of Boron-10 :Boron-11?
2:3
1:4
3:2
3:3
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