lab 1 actually density and lab measurements

Question 1

Graduated cylinders are typically marked to the 1 mL. Volumetric pipettes are measured to the 0.01 mL. Which glassware is more accurate: the graduated cylinder or volumetric pipette?

Answer 1

the volumetric pipette

Question 2

precision refers to

Answer 2

how close a measured number is to other measured numbers

Question 3

Which of the following is not an exact number?

Answer 3

the number of seconds in a year

Question 4

Consider two pieces of glassware, a graduated cylinder and a beaker. The graduated cylinders is marked to the one mL position while the beaker is marked to the ten mL position. Which glassware is more accurate: the graduated cylinder or the beaker?

Answer 4

the graduated cylinder

Question 5

Which of the following statements is NOT part of the rules for determining significant figures?
All non-zero digits are significant.
Zeroes to the left of the first non-zero number are not significant.
Trailing zeroes at the end of a number, but before an implied decimal point are ambiguous.
All of these statements are part of the rules.
Zeroes between two numbers are significant.

Answer 5

all correct

Question 6

Accuracy refers to ________.

Answer 6

how close a measured number is to the true value