Can someone explain were do they get the number 2.99 and 10^8?

In standard decimal notation, the speed of light is 299,800,000.0 meters per second. In scientific notation this is written as 2.998x108 meters per second, meaning that the true position of the decimal point is 8 digits to the right. In this case, that means filling in the empty spots with zeros.

Hope it helped

the answer is 0.8m.

by: nicholas

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.