DIRECTIONS: Calculate for the number of moles/ grams of each of the following. 1. 174 g of NaCl (Sodium Chloride)
2. 1.60 g of KNO3 (Salitre-preservative)
3. How much mass does 3.00 mol of NH3 (Ammonia) have?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

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

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption