The specific heat of water is 4.18 J/g•°C. How much heat does 150.0 g of water release when it cools from 92.0°C to 40.0°C? You must show all of your work to receive credit. Your answer must include the correct unit. Q=mcTriangleT

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

How many atoms are there in 5.70 mol of mg

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false