The reaction between zinc (zn) and hydrogen chloride (hcl) produces zinc chloride (zncl), hydrogen (h2) gas, and heat. if more heat is removed from the reaction, how does the rate of reaction change to counter the action? zn + 2hcl ⇌ zncl2 + h2 + heat the rate of the and produces more blank 1. reverse reaction decreases forward reaction decreases forward reaction increases blank 2. hydrogen chloride zinc zinc chloride

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

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.