Which property of data can only be determined by taking several measurements? A precision
B accuracy
C percent error

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

Measurements that have similar values are: a. usually accurate b. sometimes accurate c. always accurate d. never accurate