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Chemistry Homework
1. The correct answer for the product (6.1×10^4)x(3312) is: (considering significant figures)
A) 2.02032 x 10^8
B)2.020 x 10^8
C)2.0 x 10^8
D) 2.02 x 10^8
E)2.0 x lO^9
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Get Help Now!2. Which of the following is not an example of a mixture?
A) brass
B) iced tea
C) a person
D) air
E) 24-carat gold
3. Which one of the following has as many electrons as it has neutrons?
A) l9F B) 40Ca2+ C)14C4- D)12C
4. List the number of protons, neutrons, and electrons for 35Cl:
A) 17 protons, 1 8 neutrons, and 17 electrons
B) 17 protons, 18 neutrons, and 18 electrons
C) 18 protons, 17 neutrons, and 17 electrons
D) 35 protons, 18 neutrons, and 18 electrons
E) 52 protons, 18 neutrons, and 18 electrons
5. The overall charge of an atom is ______ if the number of electrons is ______ than the number of protons.
A) neutral, less B) negative, greater
C) positive, greater D) negative, less
6. The correct formulas for the compounds in the figure are:
A) PCI3, SCl6, C3H6F2
B) Cl3P, C16S, C3H2F6
C) PCl3, SCl8, C3H6F2
D) PCl3, SC14, C3H6F3
E) P3Cl, S6C1, C3H6F2
7. Which of the following would you expect to be nonelectrolytes when dissolved in water?
MgC12, CH3OH, N2
A) CH3OH and N2
B; MgCl2 only
c) MgCl2 and CH3OH
D) CH3OH only
E) N2 only
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