7. How many significant figures are in the following numbers? a. 0.0120350
b. 10.020
c. 12
d. 3.40 x 103

Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years

How can you use chemical equations to predict the products of the reaction you can carry out?

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?