Which of the following would make experimental results more reliable? A. choosing the data that match the hypothesis B. performing the experiment multiple times C. increasing the number of variables in the experiment D. adding the experimenter's opinion to the conclusions

Classify this reaction: 2al+n2-> aln.

Which of the following is true about the products formed during photosynthesis? (5 points) select one: a. they have the same mass as the mass of reactants. b. they are the same set of compounds as the reactants. c. they have more mass than the mass of reactants. d. they are chemically the same as the reactants.

Molecules that have the same chemical formula (same numbers of each atom) but different three-dimensional shapes are called molecules that have the same chemical formula (same numbers of each atom) but different three-dimensional shapes are called functional groups isotopes hydrocarbons isomers enantiomers