If a neutral copper atom becomes an ion that has a charge of 2+, how many electrons does the resulting ion have? a31
b27
c29
d28

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .