When hydrogen and oxygen combine to form water, water would be

a. a product.

c. both a product and a reactant.

b. a reactant.

d. neither a product nor a reactant.

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