What do repeated trials in an experiment allow a scientist to do?

Chlorine is used by textile manufacturers to bleach cloth. excess chlorine is destroyed by its reaction with sodium thiosulfate, na 2 s 2 o 3 : na 2 s 2 o 3 (aq) + 4cl 2g) + 5h 2 o (ako)  2 nahso4 (aq) + 8hcl (aq) a.

What type of reactions are referred to as electron transfer reactions? g?

What is the name of Ca (NO3) 2

What is the name of the outermost layer that forms a boundary around the outside of each cell

At a certain temperature, the equilibrium constant, kc, for this reaction is 53.3. h2 (g) + i2 (g) â½âââ2hi (g) kc=53.3 at this temperature, 0.700 mol of h2 and 0.700 mol of i2 were placed in a 1.00-l container to react.

Identify any solutes and solvents present in a mixture of 0.05 mol ethanol, 1 liter water, and 0.2 g hydrogen peroxide.

Suppose the mass of a dog is 90 pounds. If 1 kilogram is equal to 2.2 pounds, what is the mass of the dog in kilograms?

How many molecules of sulfur trioxide are in 78.0 grams? (A) 7.33 x 10^23 (B) 5.87 x 10^23 (C) 3.76 x 10^27 (D) 0.974 (E) none of the above

How many different elements have scientists discovered? 12, 112, 118, or more than 500?

What is the total mass of Kr-42 remaining in a 20-mg sample after 48.8 hours? (1) 2.5 mg (2) 5.0 mg (3) 10 mg 4) 20 mg