Two unknown compounds are tested compound 1 contains 15.0g of hydrogen and 120.0 g of oxygen compound 2 contains 2.0 g of hydrogen and 32.0 g of oxygen are the compounds the same ? Explain your answer

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate

Gasoline has a density of 0.740 g/ml. if you have 328 grams of gasoline, what is the volume in milliliters?

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.