Which includes the present time? A. precambrian time
B. paleozoic era
C. cenozoic era
D. mesozoic era

In saturated organic compounds, all the bonds between carbon atoms are called?

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?

Turbo the snail moves across the ground at a pace of 12 feet per day. if the garden is 48 feet away, how many days will it take for the snail to get there?