Arthur made a mistake labeling the diagram of the three stages of the cell cycle. where is the error in the diagram? dna is copied during the shortest stage. the cytoplasm divides during the longest stage. the nucleus divides in the stage before the cytoplasm divides. both the nucleus and the cytoplasm divide in the same stage.

h let me think

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.