Concept explainers
The density of a planet can be approximated from its radius and estimated mass. Calculate the approximate average density, in grams per cubic centimeter, of (a) Jupiter, which has a radius of about
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
Chemistry for Changing Times
- A metal object of an irregular shape has a mass of 31.5 grams. When the metal is added to water in a graduated cylinder, the volume of water increases from 5.28 mL to 7.61 mL. (A) How much water does the metal displace? (B) Calculate the density of the metal. (C) Is the metal made of platinum? Explain. (Hint: the density of platinum = 21.4 g/cm³)arrow_forwardGiven the measurement of 7.00 L, (a) what is the accuracy of this measurement? (b) what is the precision of this measurement?arrow_forwardContainer A and Container B were filled completely with chicken powder. The total mass of 1/3 of the chicken powder in Container B and 1/11 of the chicken powder in Container A was 570 g. If 5/11 of the chicken powder in Container A was poured out, the total mass of the chicken powder in both containers became 2.28 kg. How much chicken powder was in (a) Container A in grams? (b) Container B in grams?arrow_forward
- What is the volume, in cubic centimeters (cm^3) of 1.00 kilograms of gold?arrow_forwardName the SI base units that are important in chemistry,and give the SI units for expressing the following:(a) length, (b) volume, (c) mass, (d) time, (e) temperature.arrow_forwardLight travels in a vacuum at a speed of 3.00 × 108 m s-1 .(a) Convert this speed to miles per second.(b) Express this speed in furlongs per fortnight, a littleused unit of speed. (A furlong, a distance used in horse racing, is 660 ft; a fortnight is exactly 2 weeks.)arrow_forward
- Carry out each of the following calculations, paying special attention to significant figures, rounding, and units (J = joule, the SI unit of energy; mol = mole, the SI unit for amount of substance) (6.022 X 1 023 molecules/mol)( 1 .l 9 X 1 02 g) / 46.07 glmolarrow_forwardMethanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain experiment, from the reaction of 2.91 mL of methanol with 2.88 g of oxygen, 2.27 g of carbon dioxide was obtained. (a) What type(s) of chemical reaction is (are) occurring in this experiment? (b) What equipment do you think was used to measure the volume of methanol in this experiment? Calculate the percent yield of the carbon dioxide in this experiment. (c)arrow_forwardDimensional Analysis is a way of doing numerical "book-keeping" when converting quantities or performing calculations. • When converting quantities from one unit to another, conversion factors are used. Solving with Dimensional Analysis and Multiple Units: If I am in Canada where the price of gas is $1.022 USD·L1, how much will it cost me to fill up my gas tank if I travelled 125 km? • Let's also assume that my car gets an average of 30.0 miles/gallon.arrow_forward
- A sample of tap water contains 1.95 x 103 ppm CaCO3(aq). Assuming the density of tap water is 1.00g/mL, calculate the mass of CaCO3 in 2.00 L of water.arrow_forwardExpress the following numbers as decimals:(a) 1.52 × 10−2 , (b) 7.78 × 10−8 , (c) 1 × 10−6, (d) 1.6001 × 103.arrow_forwardWhich of the following statements is a scientific theory? (a) The energy in an atomic nucleus is found by E = mc². (b) There is the same number of molecules in equal -volumes of gases. (c) If the temperature of a gas doubles, the pressure doubles. (d) The region surrounding the nucleus has negative charges.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning