If you needed a mass measurment accurate to three digits after the decimal, such as 3.149 grams, you would want to use- a) spring scale. b) an electronic balance. c) a triple-beam balance. d) at least two formulas off your formula chart.

Prior knowledge can be gained from personal experience and a) forming well-developed hypotheses. b) listening to opinions of other people on a topic. c) researching previous experiments and results on a topic. eliminate d) no other methods. it can only be gained by personal experience.