Classify each of the following as homogeneous or heterogeneous mixtures. And provide explanations in support of your decision. A. Blood D. Motor oil
B. Chocolate-chip ice cream E. Black coffee
C. Brass (a blend of copper and zinc)

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m

Which of the following is a physical property flammability heat of combustion solubility and toxicity