Chemistry, 20.10.2021 01:20 jilliankoch9794
What is the mass number for an atom of xenon containing 54 protons and 75 neutrons?
Answers: 3
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Which metal exist in liquid state and can be cut with knife ?
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Correct relationship between molecular formula and empirical formula
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Given the following at 25c calculate delta hf for hcn (g) at 25c. 2nh3 (g) +3o2 (g) + 2ch4 (g) > 2hcn (g) + 6h2o (g) delta h rxn= -870.8 kj. delta hf=-80.3 kj/mol for nh3 (g), -74.6 kj/mol for ch4, and -241.8 kj/mol for h2o (g)
Answers: 1
What is the mass number for an atom of xenon containing 54 protons and 75 neutrons?...
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