Chemistry Answers

Isoflavones are weaker antioxidants than anthocyanidins. What could be the reason?

Rate of Reaction (3 points each)

Refer to the table below:

chem 13B.png

a. Compute for the Average rate of reaction (or formation) of NO2 from 150s to 400s.

Determine the average rate of reaction (or formation) of O2 from 250s to 350s

2g of NaOH is dissolved in 500dm³ of solvent.what is the molar concentration of the solution?

If 40.0dmcube of nitrogen is collected over water of 22 °c when atmospheric pressure Is 727 Torr,what is the volume of dry nitrogen at standard temperature and pressure, assuming ideal behavior?

What is the volume of a 1950 kg/m³ object that is 249 kg

How do I write the formula for a galvonic cell including Ni(s) Ni2SO4(aq) and Mg(s) MgSO4(aq)

The initial rate data for the reaction 2N₂O_5(g) → 4NO_2(g) + O_2(g) is shown in the following table.

            Experiment    [N₂O₅](M)        Rate (M/s)

                1         1.28 × 10²         22.5

                2         2.56 x 10²         45.0

a. Determine the order of reaction of the given reactant.

b. Determine the value of the rate constant for this reaction.

how many moles of BaS would be used to make 1.5X10^3 mL of a 10.0M solution

After being poured into a pan, 10.0 moles of water were heated on an electric stove. During this time, the temperature of the liquid rose from 26 ℃ to 38 ℃. How much heat, in J, was absorbed by the water? Use c = 73.32 J/mol K.

After being poured into a pan, 10.0 moles of water were heated on an electric stove. During this time, the temperature of the liquid rose from 26 ℃ to 38 ℃. How much heat, in J, was absorbed by the water? Use c = 73.32 J/mol K.