A reaction takes place that is expected to yield 171.9 g of product, but only yields 154.8 g. What is the percent error for this experiment?
9.9%
17.1%
b. 90.1%
d. 111.0%

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j

Is 343 in the sequence -5, -2, 1, 4, 7

What is the name of the enzyme that forms at the start of transcription?