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# bee Watch

1. • Suppose a substance has been prepared that is composed of carbon, hydrogen, and nitrogen. When 0.1156 gram of this compound is reacted with oxygen, 0.1638 gram of carbon dioxide (CO2) and 0.1676 gram of water (H2O) are collected. Assuming that all the carbon in the compound is converted to CO2

• Determine the mass of Carbon and hydrogen in the sample (2)
• Calculate the percent composition of Carbon, Nitrogen and Hydrogen in the substance ( 9)
• Calculate the mass of nitrogen in the substance (2)
• Calculate the empirical formula of the sample (3)
• Suppose the molecular mass of the substance was 93 g/mole, find the molecular formula. (4)
2. (Original post by chansab)
• Suppose a substance has been prepared that is composed of carbon, hydrogen, and nitrogen. When 0.1156 gram of this compound is reacted with oxygen, 0.1638 gram of carbon dioxide (CO2) and 0.1676 gram of water (H2O) are collected. Assuming that all the carbon in the compound is converted to CO2

• Determine the mass of Carbon and hydrogen in the sample (2)
• Calculate the percent composition of Carbon, Nitrogen and Hydrogen in the substance ( 9)
• Calculate the mass of nitrogen in the substance (2)
• Calculate the empirical formula of the sample (3)
• Suppose the molecular mass of the substance was 93 g/mole, find the molecular formula. (4)
where are you stuck?

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Updated: June 9, 2016
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