A sample of tin(II) nitrate, Sn(NO3)₂ (molar mass=242.71 g/mol), is heated in an evacuated cylinder (i.e. P=0 atm) with a volume of 6.72 L. The salt completely decomposes when heated, according to the equation: 2Sn(NO3)₂ (s) → 2SnO(s) + 4NO₂(g) + O₂(g) If the pressure in the cylinder after decomposition and cooling to a temperature of 277 K is 0.326 atm, what was the mass of the sample? Assume that the volume of solid chemicals involved in the reaction have negligible volume. A) 46.8 g B) 9.37 g C) 4.68 g D) 23.4 g E) 46.8 g

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1. A sample of tin(II) nitrate, Sn(NO3)₂ (molar mass=242.71 g/mol), is heated in an evacuated cylinder
(i.e. P=0 atm) with a volume of 6.72 L. The salt completely decomposes when heated, according to the
equation:
2Sn(NO3)₂ (s) → 2SnO(s) + 4NO₂(g) + O₂(g)
If the pressure in the cylinder after decomposition and cooling to a temperature of 277 K is 0.326 atm,
what was the mass of the sample? Assume that the volume of solid chemicals involved in the reaction
have negligible volume.
A) 46.8 g
B) 9.37 g
C) 4.68 g
D) 23.4 g
E) 46.8 g
Transcribed Image Text:1. A sample of tin(II) nitrate, Sn(NO3)₂ (molar mass=242.71 g/mol), is heated in an evacuated cylinder (i.e. P=0 atm) with a volume of 6.72 L. The salt completely decomposes when heated, according to the equation: 2Sn(NO3)₂ (s) → 2SnO(s) + 4NO₂(g) + O₂(g) If the pressure in the cylinder after decomposition and cooling to a temperature of 277 K is 0.326 atm, what was the mass of the sample? Assume that the volume of solid chemicals involved in the reaction have negligible volume. A) 46.8 g B) 9.37 g C) 4.68 g D) 23.4 g E) 46.8 g
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