Concept explainers
Express each of the following in decimal notation:
a.
b.
c.
d.
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Chapter 2 Solutions
Bundle: Chemistry in Focus, Loose-leaf Version, 7th + OWLv2, 1 term (6 months) Printed Access Card
- (a) The boiling point of octane is 126 C. What is this temperature in degrees Fahrenheit and in kelvins? (b) Potatoes are cooked in oil at a temperature of 350 F. Convert this temperature to degrees Celsius.arrow_forwardConvert the following Celsius temperatures to Fahrenheit degrees. the boiling temperature of ethyl alcohol. 78.1 °C a hot day at the beach on a Greek isle. 40. °C the lowest possible temperature, 273 °C the body temperature of a person with hypothermia, 32 °Carrow_forwardConvert the following Fahrenheit temperatures to Celsius degrees. a chilly morning ¡n early autumn. 45 °F a hot, dry day in the Arizona desert. 115 °F the temperature in winter when my car won’t start, 10°F the surface of a star, 10,000°Farrow_forward
- Which of the following statements use only exact numbers? (a) The little boy weighs 74.3 lbs. (b) The boiling point of ethanol is 78C. (c) The mailman delivered 3 letters, 2 postcards and one magazine.arrow_forwardGaseous methane (CH4) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O). Suppose 1.44 g of methane is mixed with 11. g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure your answer has the correct number of significant digits. 8 g X X Sarrow_forward1. David moved from a house that is 98 miles away from his workplace to a house that is 31 miles away from his workplace. What is the percent change I the distance from his home to his workplace? 2. Convert 3.0 x 100 years to seconds.arrow_forward
- 1. Convert the following values into the required units. Report answers in correct number of significant figures. A. 5.15 kg/m^3 to g/L B. 9.787 dyne to N 2. The mass of a diamond is usually expressed in carats, where 5.0 carats = 1.00 g. The density of diamond is 3.51 g/mL. What is the volume (in mL) of a 4.0-carat diamond?arrow_forwardMake the given temperature conversions. If the temperature outside is 101.0 °F, what is the temperature in degrees Celsius? temperature: °C Pure iron has a melting point of 1535 °C. What is its melting point in degrees Fahrenheit? temperature: °F Water has a boiling point of 100.0 °C. What is its boiling point on the Kelvin scale? temperature: Karrow_forward44. Convert the following. Express your answers in scientific notation. a. 7.5 x 10' J to kilojoules b. 3.9 × 10° mg to decigrams c. 2.21 X 10 ª dL to microliters 45. Light travels at a speed of 3.00 × 1010 cm/s. What is the speed of light in kilometers/hour?arrow_forward
- Perform the following mathematical operations, and express the result to the correct number of significant figures. a. 6.022 x 1023 x 3.72 x 10 : 6.6262 x 10-34 x 2.998 x 108 b. 5.42 x 10-9 c. 1.268 x 10-2 + 1.24 x 10-3 +1.776 x 10-1: (1.00866 – 1.00716) d. 6.02205 x 1023 9.875 x 102 – 9.803 x 102 х 100%3D |(100 is exact) е. 9.875 x 102 9.42 x 102 + 8.234 x 102 + 1.625 x 103 f. (3 is exact) 3arrow_forward-7 mmol/L mercury(I) chloride (Hg,Cl,) solution to a reaction flask. Calculate the mass in micrograms of mercury(I) A chemist adds 310.0 mL of a 2.5 x 10 chloride the chemist has added to the flask. Round your answer to 2 significant digits. x10arrow_forwardLength of foil 13.10 cm Width of foil 9.50 cm Mass of foil 9.745 g Use the data in the table to determine the thickness of your aluminum foil (in cm) using the 2.6989 g/mL for the density of aluminum then convert this value to meters (m) and micrometers (um). cm umarrow_forward
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