A certain liquid X has a normal boiling point of 127.70 ° C and a boiling point elevation constant Kb = 2.41°C*kg*mol⁻¹ A solution is prepared by dissolving some iron(III) chloride (FeCl₃) in 700 g of X. This solution boils at 129.4°C . Calculate the mass of (FeCl₃) that was dissolved.

Determine the reaction and balance the following equations urgent due in the morning

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.

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.