A) An unknown compound that is composed of C, H and O atoms was submitted 27.1...

Question

Question

A) An unknown compound that is composed of C, H and O atoms was submitted 27.1 g CO₂ and 12.2g H₂O. Determine the empirical formula of this substance

B) What is the molecular formula of the unknown compound in (part a) if the molar mass is 476.64 g/mol?

C) Calculate how much (in grams) NH₃ can be produced by reacting 3.75 g of N₂ gas and excess H₂ assuming a 100% efficiency.

E) Consider the reaction between 13.5 g of Si (s) and 16.0 g nitrogen gas to produce Si₃N₄ .Assuming 100% efficiency.

Theoretical Yield (in grams):______

Mass (in grams) of Silicon left after reaction:______

Mass (in grams) of Nitrogen gas left after reaction:______

F) Calculate how much (in grams) of gaseous I₂ is needed to produce 25.0 grams SbI₃ (s) if the efficency is 75.0% and assuming excess Sb (s).

Mass of I₂:________

G) Calculate the atomic mass of strontium given the following information. ---> Sr-84 (0.56%), Sr-86 (9.86%), Sr-87 (7.00%), Sr-88 (82.58%)

Answer 1

Answer #1

Answer 2

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