Which of the following are redox reactions? p4(s)+10hclo(aq)+6h2o(l)→4h3po4(aq) +10hcl(aq) br2(l)+2k(s)→2kbr(s) ch3ch2oh(l)+3o2(
g.→3h2o(l)+2co2(
g. zncl2(aq)+2naoh(aq)→zn(oh)2(s)+2nac l(aq)

What’s the scientific notation for the number 6,840,000,000

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.

Iam hoping to create 5.72 grams of glucose. the plant was given 4.75 liters of co2 and 2.81 g of h20. which reactant was the limiting reagent? how much excess mass did we have of the other reactant?