7) 7) If the outside temperature is 35 C what is the temperature in K? A) 308 K B) 31 K C) -238 K D) 95 K E) 63 K 8) 9) 8) Determine the volume of an object that has a mass of 100 g and a density of 955 g ml-1. A) 25.6 mL B) 0.095 ml C) 27.9 ml D) 10.5 ml E) 955 mL 9) A student performs an experiment to determine the density of a sugar solution. She obtains the following results 1.71 g ml-1.1.73 g ml-1.1.67 g ml-1, 1.69 g ml-1. If the actual value for the density of the sugar solution is 1.40 g ml-I, which statement below best describes her results? A) Her results are precise, but not accurate. B) Her results are accurate, but not precise Her results are both precise and accurate D) Her results are neither precise nor accurate. E) It isn't possible to determine from the information given. 10) 10) How many significant figures are in 3.408 104 m? A) 5 B) 4 C) 8 D) 3 E) 11) 12) 11) How many significant figures are in the measurement 0.0005890 g? A) 6 B) 8 95 D) 4 E) 7 12) What answer should be reported, with the correct number of significant figures, for the following calculation? (433.621 - 333.9) x 11.900 A) 1.186799 103 B) 1.19.103 C) 1.187 103 D) 1.1868 103 E) 1.18680 x 103 13) 13) Molecules can be described as A) heterogeneous mixtures B) homogeneous mixtures mixtures of two or more pure substances D) two or more atoms chemically joined together E) mixtures of two or more elements that have a specific ratio between components 14) A substance that can't be chemically broken down into simpler substances is A) a compound B) an element C) a heterogeneous mixture D) a homogeneous mixture E) an electron 14) 15) If 3.6 g of chlorine combines with sodium to make 6.0 g of sodium chloride, what mass of sodium is required? A) 1.28 B) 3.6 g C) 248 D) 9.6 g E) 6.08 15)