An effusion apparatus allows a certain quantity of butane, C4H10, to escape in 136 seconds. 106 seconds are required for the same number of moles of an unknown gas to be released. What is the molar mass of the second gas?

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Amethod of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called

Johnny's bakery has 30,900 grams of sugar. a recipe calls for 32 pounds of sugar to be used. how much sugar will be left over? (1 lb=453.59 g).