Is this true or false Titanium dioxide is used in sun block and to treat cotton in clothing, but is dangerous for human use.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Geothermal energy for industrial use is available almost anywhere. a. true b. false

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5