A gas sample is known to be a mixture of ethane and butane. A bulb of 200.0 cm^3 capacity is filled with the gas to a pressure of 100.0 kPa at 20.0 C. If the weight of gas in the bulb is 0.3846 g, what is the mole percent of butane in the mixture?

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.