47) Write the name for SnS. 47) A) tin sulfide B) stannous sulfide C) stannous s

Question

47) Write the name for SnS. 47) A) tin sulfide B) stannous sulfide C) stannous sulfate D) stannic sulfide E) stannic sulfate 48) What is the volume (in cm3) of a 43.6 g piece of metal with a density of 2.71 g/cm3 48) . A) 6.65 B) 19.5 C) 16.1 D) 0.425 E) none of the above 49) An atom that has an atomic number of 38 and a mass number of 88 is an isotope of an atom that has 49) A) 50 protons and 38 neutrons. B) 50 neutrons and 38 protons. C) an atomic number of 39 and a mass number of 88. D) an atomic number of 38 and a mass number of 86. 50) Methane and oxygen react to form carbon dioxide and water. What mass of water is formed it9.6g 50) of methane reacts with 38.4 g of oxygen to produce 26.4 g of carbon dioxide? A) 26.4g B) 21.6g C) 48.0g D) 44.4g

Explanation / Answer

47)
SnS is compound of Sn2+ and S2-
S2- is sulfide
So, the name is Tin(II) sulfide
Answer: A

48)
mass = 43.6 g
density = 2.71 g/cm^3
use:
volume = mass / density
= 43.6 g / 2.71 g/cm^3
= 16.1 cm^3
Answer: C

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