What does the negative slope of the solid-liquid phase boundary in the phase diagram of water indicate?

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure

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.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion