You titrate an unknown sample of oxalic acid (H2C2O4 (aq)) to determine its concentration. After noting the volume of the oxalic sample is 112.6 mL, you add a few drops of phenolphthalein indicator and titrate to the endpoint using 45.2 mL of a standardized 1.5 M NaOH solution. Find the molarity of the oxalic acid sample.

The arrangement of particles is most ordered in a sample of

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.

Calculate the temperature rise when 0.2g of propane is used to heat 400cm cubed of water.