Which of the four substances listed WILL dissolve in water and why? HCI
CH4
CaCO3
Gasoline

A) HCI because it is polar
B) Gasoline because it is flammable
C) CH4 because it is nonpolar
D) CaCO3 because it is a salt

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

Which type of reaction always has an element and a compound as reactants

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.