You measure the mass of a 500 g standard on your balance four times. You get values of 455 g, 456 g, 454 g, and 455 g. Which of the following best describes your balance?
We can not see your list. I would say wrong :)
sorry.
not precise and not very accurate
not precise but very accurate
precise and accurate
precise but not very accurate (i think its this one)
precise but not very accurate (i think its this one)
yes, values close together but wrong
Precision refers to the closeness of two or more measurements to each other...
Accuracy refers to the closeness of a measured value to a standard or known value....
So would it be precise and accurate?
it is precise
it is NOT accurate
455 is NOT 500
ok.. thanks c:
Calculate the wavelength (in m) of a photon capable of exciting an electron in Li2+ from the state n= 3 to the state n=5
1.4239*10^-7 - correct