in scientific notation with the correct number of significant figures. a. Convert 31.7 feet into meters. 9.7m b. Convert 0.5126 kilogramns into grams. C. Convert 0.00260 centimeters into nanometers.
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- The GPS in my car indicates that t have 100. mi left until I reach my destination. What is this distance in kilometers?34. Convert 4.58 x 10³ cm³ to each unit. a. L b. mL c. gal d. qt The m in the equation for density is in italic type, meaning that it stands for mass rather than for meters. In general, the symbols for units such as meters (m), seconds (s), or kelvins (K) appear in regular type, while those for variables such as mass (m), volume (V), and time (t) appear in italics.16. A mixture is made by adding 20.42 g of substance A, 1.322 g of substance B, and 83.1 g of substance C. Calculate the total mass of the mixture with the proper number of significant figures. 17. The average speed of a nitrogen molecule in air at 25 °C is 515 m/s. Convert this speed to miles per hour.
- 6. Complete the following conversions 10.68 g to mg b. 6.8 x 10* mg to kg а. c. 25.0 mL to L d. 0.64 m to in e. 2.00 in to cm2 f. 162°F to °C g. -18°C to K h. 212.3 K to °C 7. A pharmacy technician is asked to prepare an antibiotic IV solution that will contain 500.0 mg ofa. Convert 360 s to ms. e. Convert 2.45 × 1 0 2 ms to s.b. Convert 4800 g to kg. f. Convert 5 µm to km.c. Convert 5600 dm to m. g. Convert 6.800 × 1 0 3 cm to km.d. Convert 72 g to mg. h. Convert 2.5 × 1 0 1 kg to Mg.a. Convert 16.7 m to kilometers (km). km b. Convert 51.7 km to meters (m). m BAR [Review Topics] c. Convert 85.9 kg to grams (g). g d. Convert 26.6 L to milliliters (mL). mL e. Convert 67.3 dL to liters (L). dL f. Convert 6730 L to cubic centimeters (cm³). 3 cm³ [References]
- A block of wood measures 8.0 in high, 2.0 in wide, and 1.5 in deep.a. Name one physical property and one chemical property of the block of wood.b. Label each property from part (a) as intensive or extensive.c. Calculate the volume of the block of wood in units of in^3d. Calculate the dimensions of the block of wood in units of cmThe density of a pure substance is its mass per unit volume. The density of hexane has been measured to be 655.. Calculate the mass of L 455. mL of hexane. The density of a pure substance is its mass per unit volume. The density of hexane has been measured to be 655 hexane. Calculate the mass of 455. mL of1.Determine the density of a 16.25 g sample of stone that displaces 5.0 mL of water.
- III > f. Is the density of the solution an intensive property or an extensive property? 8. Create a concept map that illustrates the relationship between scientific notation and unit prefixes. 9. A balloon is filled with helium at a temperature of 25.0°C. a. Calculate the temperature of the helium in degrees Fahrenheit. b. Calculate the temperature of the helium on the Kelvin scale. c. Gas density decreases with increasing temperature. What would you observe if you heated the balloon? d. Gas density increases with decreasing temperature. What would you observe if you cooled the balloon? e. Is helium a pure substance or a mixture? f. Is helium an element or a compound? 10. The diameter of an aluminum atom is 250 picometers (pm) (1 pm = 10-¹2 m). How many aluminum atoms must be placed end to end to make a "chain" of aluminum atoms 1 ft long? Design credits: A Human Perspective group of people, kristian sekulic/Getty Images; A Medical Perspective otoscope, Martin Barraud/age fotostock;…Calculate the areas and densities. Report the answers in the correct units.a. the area of a rectangle with sides measuring 3 × 1 0 1 cm and 3 × 1 0 -2 cmb. the area of a rectangle with sides measuring 1 × 1 0 3 cm and 5 × 1 0 -1 cmc. the density of a substance having a mass of 9 × 1 0 5 g and a volume of 3 × 1 0 -1 c m 3d. the density of a substance having a mass of 4 × 1 0 -3 g and a volume of 2 × 1 0 -2 c m 35. Seawater can be made into drinking water by boiling the seawater, collecting the steam, and con- densing the steam to liquid water. Classify the changes in water that occur when it is boiled to steam, then condensed to liquid water. a. Both are physical. b. One is physical, and one is chemical. с. Both are chemical. d. Can't be determined from the information given. Explain your answer: I think that it is physical folr both since it Der gets hoiled, it only goes woter lalben the