Chapter 1, Problem 1.41E

9. Lithium is the least dense metal known (density: 0.53 g/cm^3). What is the volume occupied by 1.20 x10^3 g of lithium?

6. My car gas tank holds 14.2 gallons of gas. 10.9 kg of carbon dioxide, CO₂, is produced per 1.00 gallon of gas burned. How many pounds of CO₂ is produced from a full tank of gas? (1 kg = 2.205 lb.)

19. DETAILS Calculate these masses. (a) What is the mass (in g) of 2.57 cm³ of lithium, density = 0.534 g/cm³? 4.0✔ g (b) What is the mass (in g) of 185 mL nitrogen gas, density = 1.145 g/L? 4.0✔ g Supporting Materials Periodic Table Additional Materials eBook OSGENCHEM2 1.6.E.090. Show My Work (Optional)? Constants and Factors Supplemental Data MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER

11. Calculate the area ofa circle with a radius of 10.0 m. Express your answer in square centimeters ( cm?). A = r² .

5. How many minutes does it take light from the sun to reach Earth? (The distance from the sun to Earth is 93 million miles; the speed of light = 3.00 X 10^8 m/s.)

8) To determine the volume of an irregular shaped object, it is dropped into a graduate cylinder containing 12.00 cm³ of water. The water level increased to 17.7 cm³. Its volume is cm³. If the mass of the object is 10.765 g, what is the density of the object?

Bud N. Chemist must determine the density of a mineral sample. His five trials yield densities of 5.15 g/cm3, 4.83 g/cm3, 5.08 g/cm3, 4.97 g/cm3, 5.12 g/cm3. Independent studies found the correct density to be 5.06 g/cm3. Which of the following is incorrect? a. The mean of his analysis is 5.03 g/cm3 indicating an error of 0.03 g/cm3 from the correct density B.His data has a standard deviation of 0.017 g/cm3 C.His data has a relative standard deviation of 2.60% D. He can report his analyzed density as 5.0±0.2 g/cm3 at a 95% confidence level E. The true value (population mean) is found within the confidence interval of Bud’s work

3. A student is using a 10 mL volumetric pipet to dispense water and wants to test how accurate the volume is by weighing the water dispensed from the pipet. First, they measure the mass of a beaker to be 30.045 ± 0.005 g. They then collect 10 mL of water into the volumetric pipet and dispense the water into the beaker. The mass of the beaker plus the water is 40.081 ± 0.005 g. Calculate the mass of the water added to the beaker and use propagation of error to calculate the uncertainty of the mass. Report the mass of the water with the uncertainty with appropriate significant figures.

The length of a 262 mm line can also be expressed as: (choose one of the choices) Hint: you must look at answer choices and determine which ones are wrong. O 2.62 x 10 -2 m O 2.62 x 10 m O 2.62 x 10 6 km O 26.2 dm O 0.262 cm 26.2 cm