Determine how many moles of iron would be produced from 2.00 mol of aluminum.*
3FeCl2 + 2A1 --> 3 Fe + 2 AICI:
a. 3.0 mol
b. 6.0 mol
c. 4.0 mol
d. 2.0 mol

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

Consider these four line graphs representing speed in meters/second, where each x-axis is labelled in seconds and each y-axis is labelled in meters. which line graph indicates the greatest speed at 5 seconds?