A piece of dry ice (pure CO2) weighs 22.50 grams. It is stuffed into a balloon (with no air) and allowed to sublime ("evaporate"). If the balloon now contains 10.50 liters of CO2 at 28.0 °C, what
is the pressure in torr? (Round to the nearest whole number)

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

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.