Chemistry, 04.02.2020 03:46 vlactawhalm29
Example of ammonia contains 9 grams of hydrogen 42 grams of nitrogen another sample of compound contains 12 grams of hydrogen. calculate the amount of nitrogen in the second sample of ammonia. express you answer with the appropriate units
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Chemistry, 21.06.2019 20:30
Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
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Chemistry, 22.06.2019 03:00
In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?
Answers: 3
Chemistry, 22.06.2019 04:00
Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?
Answers: 1
Example of ammonia contains 9 grams of hydrogen 42 grams of nitrogen another sample of compound cont...
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