Methane gas is collected over water at 25 C and an atmospheric pressure of 775 mmHg. What is the dry pressure of the gas at this temperature? (Vapor Pressure of water = 0.0313 atm).

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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.