The element can also be called gold-197. It has Mass number is 197, atomic number is 79 and electrons 79, Atoms that have the same number of protons but different number of neutrons. Isotopes have identical numbers of protons and electrons.
Answer: P= 1.64 atm
Explanation: solution attached.
Use Ideal gas law
PV= nRT
Derive for P
P= nRT/V R= 0.08205 L.atm/mol.K
Substitute the values.
Answer:
this was the last of .the last 555543 years of 55my in
Explanation:
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all these are physical properties except release of heat so it's probably heat energy given off
