8 2. freezing of water 3 decomposition of water into hydrogen and oxygen gases 4

Question

8 2. freezing of water 3 decomposition of water into hydrogen and oxygen gases 4 compression of oxygen gas A)2, 3,4 B) 1,3,4 C) 1,3 D) 1,2 E) 24 9 Osmium has a mass of 24.914lbs What is the density of 0.1321 gallons of ounium? Express density in g/cm A) 11,300 B) 2260 C) 2212 D) 221.24 E) 203 x 10 10. How many 960n ceiling cubic centimeters of air are in a room that measures 1200 t x 110 B and has an A) 3.59x 1o B) 92.8 C) 24918 D) 268 x 10 E) 249 x 10 i- Jeside outside the atomic nu leas and havent pourve charge A) Protons, neutrons B) Electrons, neutrons C) Protons, clectrons D) sone of the sbove E) Neutrons 12 In the periodic table, the horiontal rows are called called of clements nd the vertical comns are A) octives grosp B) families, periods C) pariods, families D) perioda, ostaves E) rows group 13. Element 9117 is #1 19 will be . A) noble gas, nonnveta C) metal metal D) halogen, metal netal, transition metal

Explanation / Answer

Ans 9 : B) 22.60

24.914 lbs = 11300.8 g

0.1321 gallons = 500.05 mL

Density = mass / volume

= 11300.8 / 500.05

= 22.60 g/cm3

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