Measurement in Chemistry

Liquid nitrogen boils at 77 K. What is this temperature in degree Celsius?

A square platinum has sides 2.50 cm long and a thickness of 0.25 mm. What is the volume of the platinum sheet in cm³?

A standard wine bottle has a volume of 750 mL. What is the volume in liters?

A circulated U.S quarter has a mass of 5.99 g. Express this mass in milligrams.

Calculate the percent error for the boiling point of pure water measured to be 99.1°C, given that the accepted value is 100.0°C.

What is the product of a digit term and an exponential term in scientific notation?

What are significant figures in a measured quantity?

What is the rule for significant figures regarding nonzero digits?

• Any nonzero digits are significant

• Only the first digit is significant

• Only the last digit is significant

• All digits are significant

What is the rule for significant figures regarding zeros between nonzero digits?

• They are significant

• They are not significant

• They are only significant if they are at the end

• They are always significant

What is the rule for significant figures regarding zeros to the right of a nonzero number?

• They are significant if there is a decimal

• They are not significant

• They are always significant

• They are only significant if they are at the beginning