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Gen Chem 1 Final Exam Review – Saylor Questions and Answers

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Gen Chem 1 Final Exam Review – Saylor Questions and Answers Which of the following is a correct feature of the nuclear atom proposed by Rutherford? A) The atom is mostly empty space, most of the mass of an atom is concentrated in its nucleus. B) All atoms of an element have the same mass. C)...

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Gen Chem 1 Final Exam Review – Saylor
Questions and Answers

Which of the following is a correct feature of the nuclear atom proposed by Rutherford?

A) The atom is mostly empty space, most of the mass of an atom is concentrated in its nucleus.

B) All atoms of an element have the same mass.

C) It is like the "plum pudding" model.

D) The majority of alpha particles to strike the foil "bounded back"


E) The number of neutrons and electrons in the atom are equal. The atom is mostly empty

space, most of the mass of an atom is concentrated in its nucleus.




An 56 Fe 2+ particle contains

A) 28 protons, 28 neutrons, 26 electrons

B) 54 protons, 56 neutrons, 52 electrons

C) 58 protons, 58 neutrons, 56 electrons

D) 26 protons, 26 neutrons, 26 electrons


E) 26 protons, 30 neutrons, 24 electrons 26 protons, 30 neutrons, 24 electrons




The density of mercury is 13.5 g/mL. What is the mass in kg of mercury that fills a 0.250-L

flask?

, Gen Chem 1 Final Exam Review – Saylor
Questions and Answers
A) 3.38 kg

B) 54.0 kg

C) 3380 kg

D) 0.0540 kg


E) can't determine from the given information 3.38 kg




What answer should be reported, with the correct number of significant figures, for the following

calculation? (433.621 - 333.9) × 11.900

A) 1.18680 x 10^3

B) 1.19 x 10^3

C) 1.186799 x 10^3

D) 1.1868 x 10^3


E) 1.187 x 10^3 1.19 x 10^3




The correct name for HClO is

A) hydrochloric acid

B) chloric acid

C) hypochlorous acid

, Gen Chem 1 Final Exam Review – Saylor
Questions and Answers
D) chlorous acid


E) perchloric acid hypochlorous acid




Which species has 54 electrons?

A) 112 Cd 48

B) 132 Xe+ 54

C) 132 Xe2+ 54

D) 128 Te2- 52


E) 118 Sn2+ 50 128 Te2- 52




The accuracy and precision of four 10 oz (296 mL) cough syrup dispensers is evaluated by

measuring the volume of three samples dispensed from each of them.

Which of the following dispensers is the most precise but least accurate?

A) 296.5 mL, 295.5 mL, 296.0 mL

B) 299 mL, 296 mL, 293 mL

C) 283.3 mL, 283.2 mL, 283.4 mL


D) 298.3 mL, 294.2 mL, 296.0 mL 283.3 mL, 283.2 mL, 283.4 mL

, Gen Chem 1 Final Exam Review – Saylor
Questions and Answers
If the walls in a room are 955 square feet in area, and a gallon of paint covers 15 square yards,

how many gallons of paint are needed for the room?

A) 47 gallons

B) 7.1 gallons

C) 2.3 gallons

D) 21 gallons


E) 24 gallons 7.1 gallons




Give the correct formula for aluminum sulfate.

A) Al2S3

B) AlSO3

C) Al2(SO4)3


D) Al3(SO4)2 Al2(SO4)3




How many sig figs are in the measurement, 0.0005890 g?

A) 6

B) 8

C) 5

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