Presented with three pairs of related carbonyl-containing molecules, identify the relative frequency of their carbonyl infrared by sorting the pairs into two groups. (there will be three compounds per bin.) slightly higher stretching frequency slightly lower stretching frequency drag and drop the labels into the boxes to identify which of the pair will have a higher carbonyl stretching frequency relative to the other. hept-3-en-2-one 3-phenylpropanoic acid but-2-enoic acid butanoic acid cinnamic acid heptan-2-one

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.