Any time an experiment isn't quantitative, you don't need exact masses.
Generally though, three significant digits makes a good rule of thumb for accuracy.
In the metric system, the Gram, as in kilogram is the standardfor mass measurement
The best estimate for a pair of sneakers is 1 kilogram.
He is a Pilipino, ok ok ok ok ok ok ok..........
in russia According to an Answers.com search for "Gustav Kirchhoff", the spectroscope was invented in Germany.
you can measure the mass by putting it on a balance and measure really quickly. the volume you can estimate an approximate answer by putting it in water and measuring its displacement.
no. you must go to mass.
Which is the best estimate for the mass of a duck?
ok
125 grams ok noobs
3 grams
1kg
10 grams
250 kilograms
That depends a lot WHAT you want to estimate about the lemon - which of its qualities, e.g., its mass, its diameter, its sourness, its color, etc.
Ok what is your query?
Dunno, but the ratio of the mass of a proton to the mass of what prople think of as being an electron is approx 1980. I'd check that if I were you though. Probably OK to +- 5%.
1 gram