order to climb a steep hill on a bicycle, a rider shifts to the lowest gear. The lowest gear has the greatest mechanical advantage because it

When co2 levels are high the kidneys reabsorb this to compensate?

indicate whether the entropy of the system increases or decreases. Mixing 10 mL of 90.0 °C water with 10 mL of 10 °C water. The answer is that entropy increases. I need the brief explanation why the entropy increases at this situation.

What is chromatography and how does it work?

The flow of electrons is always from the ___ to the___in an electrochemical cell.

How many grams of calcium fluoride contain 38 grams of fluoride atoms

which of Nature's erosions message do you think wears down a mountain or part 2 faster when water or ice why

We dissolve 5.00 grams of sugar, C12H22O11, in water to make 1.000 L of solution. What is the concentration of this solution expressed as a molarity?

What mass of carbon monoxide must be burned to produce 175 kj of heat under standard state conditions?

The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants should be used?

How many grams of zinc are needed to produce 25.0 g ZnCl2