The most abundant compound in most living things is
a. carbon dioxide.
c. sodium chloride.
b. water.
d. sugar.

Which is a characteristic of mixtures?

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m