Question 596210: Sorry for the multitude of questions, but I finished all 100 problems of my science homework, and these were the only ones I need help to verify with. Thanks!
1.Experiments with cathode rays led to the discovery of the electron.
2.The number of atoms in a mole of any pure substance is called Avrogado's number.
3.Rutherford's experiments led him to conclude that atoms contain massive central regions that have a positive charge.
4.The mass of 5.000 moles of cesium (atomic mass 132.9 amu) is 6.022 times 10^23 g.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Sorry for the multitude of questions, but I finished all 100 problems of my science homework, and these were the only ones I need help to verify with. Thanks!
1.Experiments with cathode rays led to the discovery of the electron.
Seems reasonable, but I'm not certain. Google Thompson.
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2.The number of atoms in a mole of any pure substance is called Avrogado's number.
It's Avogadro's number.
Avogadro's number = 6.0221415*10^23
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3.Rutherford's experiments led him to conclude that atoms contain massive central regions that have a positive charge.
That's true.
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4.The mass of 5.000 moles of cesium (atomic mass 132.9 amu) is 6.022 times 10^23 g.
I don't think so. That's a lot of weight.
It's 5*132.9 grams
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