Molecular formula of compound
An unknown compound has the empirical formula CH2. A 0.050-mol sample of this compound weighs 4.20 g. What is the molecular formula of this compound?
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An 8-kg plunger is released from rest in the position shown and is stopped by two nested springs; the constant of the outer spring is k1 = 4 kN/m and the constant of the inner spring is k2 = 12 kN/m.
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Oxygen gas is generated by the thermal decomposition of potassium perchlorate. the oxygen gas is captured by water displacement at a water temperature of 20 degrees C resulting in a water vapor pressure of 0.0231 atm. if the pressure inside of the
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