I. glucose breaks down in our bodies to provide energy.
ii. a lump of sugar dissolves in a cup of coffee.
iii. a candle burns.
iv. ice cream melts on a hot day.
v. food is refrigerated in a refrigerator.
vi. a drop of food coloring spreads in a glass of water.

which arrangement correctly categorizes the above processes into either spontaneous or nonspontaneous processes

Sulfuric acid (a component of acid rain) reacts with limestone (calcium carbonate) to produce calcium sulfate and carbon dioxide. this damages buildings and statues made of limestone. which solution of sulfuric acid will damage these structures more quickly? a. 0.001% b. 0.005% c. 0.010% d. 0.015%

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.