A 3.000g sample of naphthalene undergoes complete combustion to produce 10.30g CO2 and 3.37g of H2O MW=128. What is the empirical formula of naphthalene and what is the molecular formula of this naphthalene?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Draw two cyclic constitutional isomers of cis-1

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.