Question

A gaseous hydrogen- and carbon-containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was 0.275 g. What is the molecular formula of the compound?

Name: a gaseous hydrogen and carbon containing compound is decomposed and found to contain 8266 carbon and 1734 hydrogen by mass the mass of 158 ml of the gas measured at 556 mmhg and 25 c was 027 07159
Uploaded: 2022-08-02T19:23:53-08:00
Duration: 3 min 57 s
Channel: John Incabo
Description: a gaseous hydrogen and carbon containing compound is decomposed and found to contain 8266 carbon and 1734 hydrogen by mass the mass of 158 ml of the gas measured at 556 mmhg and 25 c was 027 07159

          A gaseous hydrogen- and carbon-containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was 0.275 g. What is the molecular formula of the compound?

Added by Christina M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert John Incabo

08/02/2022

Step 1

Given: Pressure (P) = 556 mmHg = 556/760 atm = 0.7316 atm Volume (V) = 158 mL = 0.158 L Temperature (T) = 25°C = 298 K R = 0.0821 L.atm/mol.K \(n = \frac{PV}{RT} = \frac{0.7316 \times 0.158}{0.0821 \times 298} = 0.00473 \text{ moles}\) Show more…

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A gaseous hydrogen- and carbon-containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL of the gas, measured at 556 mmHg and 25 °C, was 0.275 g. What is the molecular formula of the compound?