Two groups were tasked to measure the mass of the metal objects given by their teacher. Rachel’s group has the following data for 3 trials: 97 g, 98 g, and 99 g. Meanwhile, Ashley’s group has 99.5 g, 100.1 g, and 100.5 g. If the accepted value for the metal’s mass is 100 g, how will you describe the data of each group in terms of precision and accuracy?

An observation that requires measurement is called quantitative observable or qualitative

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?