In 1911, Hans Geiger and Ernest Marsden (working under Ernest Rutherford) conducted an experiment involving alpha particles and gold foil that led to the discovery of the nucleus in atoms. The nucleus of an atom accounts for...
A- most of the size and mass of the atom.
B- very little of the size and mass of the atom.
C- most of the atom\'s size but very little of its mass.
D- most of the atom\'s mass but very little of its size.
Answers: 2
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Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon
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Why is it important for scientists to review and repeat the work of other scientists? 1.a scientific theory must be tested three times before it is proven. 2.the scientific method only applies to repeated experiments. 3.an experiment may have had errors that the scientists didn't recognize. 4.the results of individual scientists may be influenced by bias. 5.an experiment must be performed twice before the data can be analyzed.
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Acompound is isolated from the rind of lemons that is found to be 88.14% carbon and 11.86% hydrogen by mass how many grams of c and h?
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Use the periodic table to answer the following questions. what is the predicted order of first ionization energies from highest to lowest for beryllium, calcium, magnesium, and strontium? o be > ca > mg > sr o be > mg > ca > sr o ca > sr> be > mg o sr > ca > mg > be done
Answers: 1
In 1911, Hans Geiger and Ernest Marsden (working under Ernest Rutherford) conducted an experiment in...
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