5. Write the name of each family at the top of the columns on your perioot szible using the following information
Alkali Metals - 1 valence electron
Alkaline Earth Metals - 2 valence electrons
Boron Family - 3 valence electrons
Nitrogen Family - 5 valence electrons
Oxygen Family - 6 valence electrons
Halides - 7 valeace electrons
Noble Gases - Complete outer shells
Carbon Family - 4 valence electrons

A48 g piece of ice at 0.0 ∘c is added to a sample of water at 7.4 ∘c. all of the ice melts and the temperature of the water decreases to 0.0 ∘c. how many grams of water were in the sample?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury