The contents of two petri dishes are described in the table. Contents of Petri Dishes
Petri Dish
Contents
Final State of the Substance
с
elemental sulfur
fine yellow colored powder
D
compound sodium chloride white colored cubic crystals
Based on the final state, which statement is true about the substances in the petri dishes?
O The final substances in both petri dishes are mixtures.
O The final substances in both petri dishes are pure substances.
The final substance in Petri dish C is a pure substance and in Petri dish D is a mixture.
O The final substance in Petri dish C is a mixture and in Petri dish D is a pure substance.

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

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.

Will mark brainliest how many electrons can be held in the energy level n = 4?