The atomic number of silicon is 14. Therefore,
28Si has 14 p+ , 14 eñ , and 14 no (28 - 14).
29Si has 14 p+ , 14 eñ , and 15 no (29 - 14).
30Si has 14 p+ , 14 eñ , and 16 no (30 - 14).
Write the composition of one atom of each of the three isotopes of silicon: 28Si, 29Si, 30Si.
The atomic number of silicon is 14. Therefore,
28Si has 14 p+ , 14 eñ , and 14 no (28 - 14).
29Si has 14 p+ , 14 eñ , and 15 no (29 - 14).
30Si has 14 p+ , 14 eñ , and 16 no (30 - 14).
A compound was analyzed and was found to contain the following percentages of the elements by mass: boron, 78.14%; hydrogen, 21.86%. Determine the empirical formula of the compound.
Calculate the number of iron atoms in 125 moles of iron.
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Calculate the number of grams in 0.329 moles of K.
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