Question 12(multiple choice worth 1 points) (02.03 hc) kim heated 12 g of substance a to obtain 4 g of substance b and a certain amount of substance c. which statement is correct? substance a and substance c have the same mass. substance b and substance c have the same mass. mass of substance c is twice the mass of substance b. mass of substance a is twice the mass of substance c.

Apump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer

If 10.5 l of a at 0.98to 1.50 , is ?