8. When 5 grams of KCl are dissolved in 100 grams of H,0 at 25°C, the resulting mixture can be described as
(2) homogenous and unsaturated
(1) heterogeneous and unsaturated
(3) heterogeneous and supersaturated
(4) homogenous and supersaturated

Which element is the least metallic between cadmium, silver, zinc, or iron?

Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?

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.