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

Question

6 47) Write the name for SnS. A) tin sulfide B) stannous sulfide C) stannous sulfate D) stannic sulfide E) stannic sulfate 48) What is the volume (in cm3) of a 436 g iece of metal with a density of 2.71 gem A) 6.65 B) 195 )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 w ater. What mass of water is formed if 9.6g 50) of methane reacts with 38.4 g of oxygen to produce 26.4 g of carbon dloxide? A) 2648 B) 21.6g C) 48.0 g D) 44.4 g 8 5 6

Explanation / Answer

47. SnS

Sn is Tin, so IUPAC name is Tin Sulphide.

48. Density = Mass/Volume

Volume = Mass/Density = 43.6g / 2.71g/cm3 = 16.1cm3

49. B.

atomic number = no. of protons = 38

Mass no = no. of protons + no. of neutrons = 88

no. of neutrons = 88-38 = 50 neutrons

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