When two nonmetals are the same like F2 the bond is lonic
Nonpolar Covalent
Polar Covalent

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.