Chapter 1, Problem 1.109E

Convert each temperature to the requested temperature scale. a. 20. °C to TF b. 150. °F to TC c. 298 K to TF d. 75 °C to TK

B. 1.8 m/s C. 3.6 m/s D. 7.2 m/s 3. What is the momentum of a 45.0-kg dog running south at 9 meters per second? A. 5.00 kg • m/s south B. 45.0 kg • m/s south C. 405 kg • m/s south D. 3650 kg • m/s south A Newton's cradle will continue moving for a time but it eventuallu stons Use what.

A piece of aluminum foil has a known surface density of 15 g/cm2. If a 100-gram hollow cube were constructed using this foil, determine the approximate side length of this cube.a. 1.05 cmb. 1.10 cmc. 2.6 cmd. 6.67 cme. 15 cm

On which temperature scale (°F, °C, or K) does 1 degree represent the smallest change in temperature? Convert the following temperatures to kelvins. a. 155 °C d. 101 °F b. 200 °C e. 52 °F c. 52 °C f. 196 °F Convert the following Kelvin temperatures to Celsius degrees. a. 275 K d. 77 K b. 445 K e. 10,000. K c. O K f. 2K

1. When steam condenses, A. A physical change occurs. B. A chemical change occurs. C. Both physical and chemical changes occur. D. H20 molecules increase in number. E. H20 molecules decrease in number.

This is NOT graded! Do question 14.

7. What is a pure substance that is only made of type of atom? A. Element C. Compound D. Elixir B. Suspension What is a molecule that is made of atoms of two or more elements chemically 8. bonded together? A. Heterogeneous B. Heteronuclear C. Homogeneous D. Homonuclear 9. Which best describes heterogeneous mixtures? A. They must always be made of liquid components. No gas or solid components. B. The components must always be mixed or dispersed uniformly within the same physical state. C. The components are always visible and distinguishable from the other components. D. All of the options are correct. 10 Which best describes a homogenous mixture? A. They must always be made of liquid components. No gas or solid components. B. The components must always be mixed or dispersed uniformly within the same physical state. C. The components are always visible and distinguishable from the other components. D. All of the options are correct. 11 Which method would be the most effect to separate…

A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C.  Several observations were made and the student inferred that a chemical reaction occurred.   Which observation best supports the student's inference that a chemical reaction occurred?   A. The calcium chloride dissolved in the solution.   B. The mass of the solution totals 20 grams.   C. The temperature of the solution is 350 C.   D. The solution became lighter in color.

Absolute zero is the point at which O a. a straight-line graph of 1/V versus P at constant T intersects the origin. O b. a straight-line graph of V versus T (K) intersects the origin. Oc. gaseous helium liquefies. Od. a straight-line graph of V versus T (°C) intersects the origin. O e. a straight-line graph of V versus 1/P at constant T intersects the origin.