A runner wants to run 11.6 km . Her running pace is 8.3 mi/hr . How many minutes must she run? Express your answer using two significant figures.
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- A runner wants to run 10.3 km. Her running pace is 7.0 mi/hr. How many minutes must she run? Express your answer using two significant figures.A runner wants to run 11.9 kmkm. Her running pace is 7.0 mi/hrmi/hr. How many minutes must she run? Express your answer using two significant figures.A student is determining the density of an unknown metal with a mass of 87.8 g. The student partially fills a graduated cylinder with water and measures the volume of the water by itself as 54.8 mL. The student then adds the metal to the water and measures the new volume as 87.3 mL. What is the density, in g/mL, of the metal?
- A bakery measured the mass of a whole cake as 0.870 kg. A customer bought one slice of the cake and measured the mass of the slice as 0.1151 kg. What is the mass of the remaining cake without the one slice? Express your answer in kilograms using the appropriate number of significant figures.A student is given the following question:"What is the mass of a gold bar that is 7.379 × 10–4 m3 in volume? The density of gold is 19.3 g/cm3."The student obtains the answer through the following calculation: For the above calculation, how many significant figures should you report the answer to?1. A 22.65-g sample of a solid is placed in a flask. Ethanol is added to the same flask having the total volume together of 45.00 mL. The solid and ethanol together weigh 38.58 g. At room temperature, the density of ethanol is 0.789 g/mL. What is the density of the solid? Report your answer in correct significant figures with proper units.
- The density of iron is 7.87 g/mL. What is the mass of a 4.00 cm × 4.00 cm × cm × 1.00 cm block of iron? Express your answer to three significant figures and include the appropriate units.An unknown object is placed on a balance, which then reads 6.122 g. Its volume is measured to be 3.39 cm³. Find the density of this object by dividing mass by volume. Express your answer in grams per cubic centimeter to the appropriate number of significant figures. g/cm³A surveyor measures the length of a surveying chain containing 1000 chain links. The length is 0.032 km . What is the length of a single chain link in centimeters? Write your answer as a decimal.
- A sample of silver with a mass of 315.0 g is added to 120.0 mL of water. The water level rises to a volume of 150.0 mL. What is the density of the silver? Write the answer with three significant figures. You do not need to include the unit in the answer to this question.If the area of one tile is measured to be 1.07 ft2, how many tiles do you need to redo the floor of a 10.1 ft x 12.07 ft bathroom? Write the answer in the correct number of significant figures?The density of aluminum is 2.70 g/cm3. A square piece of aluminum foil 22.86 cm on one side weighs 2.568 g. What is the thickness of the foil in mm? express your answer in decimal notation rounded to the correct number of significant figures.