Determine the empirical formula for a compound that is made from 1.967g of carbon, 0.4115g of hydrogen, and 2.6205 g of oxygen. Put the formula in the order of carbon then hydrogen then oxygen. (Show work on scratch paper and upload in the last question. Write the formula without subscripts. For example C3H8O2 would be written C3H8O2)

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.