1, You are a scientist in a lab researching how the concentration of platinum within catalytic converters will affect the efficiency of hydrocarbon breakdown into CO2 and O2. Platinum is an expensive metal. You are told that the catalytic converters you were given to test contain 3.0 μg/kg, 4.0 μg/kg,4.5μg/kg, 5 μg/kg, 5.5μg/kg, 6 μg/kg, and 6.5μg/kg of platinum. Each converter is exposed to the same volume of gas exhaust from the same vehicle and you measure the CO2, and O2, produced. The results are as followed:

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution. calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

What if it is did darwin used to support his theory of evolution

What is the importance of interlocking the fingers and rubbing while washing hands? the palms are the dirtiest parts of the hands. the spaces between the fingers get washed. the backs of the hands get washed. the fingernails are the dirtiest parts of the hands