The lead in lead pencils is pure carbon, c. the mass of a period mark is 0.00010 g. how many c atoms (c’s) make the period mark?

asap !

The mass of one atom of Carbon is 2.0×10^−26 kg.

The mass of the period mark(kg)= 1.0x10^-7 kg.

# of carbon atoms=1x10^-7/2x10^-26

# of carbon atoms= 5x10^-34

answer; protein;

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.