What Are The Number Of Significant Figures In Chemistry

Measurement in Chemistry Assignment, Due 22 March, Surname A-D

Instructions: All questions must have the correct units and correct number of significant figures. Show all calculations and carry the units throughout. Submit your answers on a new page. Include your name and student number.

Q1. Report the number of significant figures in each of the following: a. 0.20 b. 9.05 c. 164300 (1 mark)

Q2. Report each of the following measurements using both the scientific notation and metric prefix systems: a. 345 m b. 0.0805 g c. 4650000 N (2 marks)

Q3. Determine the density (in g/cm3) of a solid given;
(2 marks)

Q4. Report the answer to the following: 65.9 - (12 + 8.51) = ? (2 marks)

Q5. The Specific Heat of a substance is the energy (Joules) required to raise one gram of substance by one degree celsius, (units: J/goC)
Heating 95.5 mL of a liquid from 18.5 oC to 47.9 oC takes 10515 J of energy. The density of the liquid at 18.5 oC is 1.210 g/mL.
What is the Specific Heat of this liquid in this experiment?

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