Which of the following statements is true?
1. All isotopes of a given element have the
same mass.
2. The atomic number of an element is the
number of protons in the nucleus of any of its
isotopes.
3. The nucleus of a neutral atom contains
an equal number of electrons and protons.
4. An ion has the same number of protons
and electrons.
Answers: 1
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Calculate the work done by an external agent during an isothermal compression of 1.00 mol of oxygen from a volume of 22.4 l at 10∘c and 1.0 atm pressure to 16.8l
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On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units
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Which of the following statements is true?
1. All isotopes of a given element have the
same...
same...
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