The health of bones depends upon a good supply of calcium. if a person consumes 0.06 g of calcium, how many moles of calcium did he consume? a. 6.6 x 102 mol b. 7.5 x 10-2 mol c. 2.4x 101 mol d. 1.5 x 10-3 mol

What does the cell nucleus do or, how does it function?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which common material is an example of a polymer? (25 pts) a. steel b. plastic c. petroleum d. rubbing alcohol