How much heat is needed to raise the temperature of 4 grams of water from 70∘C to 80∘C

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

What is an example of a physical property?

What substance has a mass of 9.5g and volume of 2.1cm^3