shyanne

how to i get started on a middle ages shield?

how do you prevent an egg from breaking from a height of 10-15 ft.?

Calculate the enthalpy of reaction for the combustion of ethene. Express the enthalpy of reaction calculated in question above as a molar enthalpy of reaction per mole of carbon dioxide.

molar enthalpy of combustion for pentane? Mass C5H12= 2.15g Mass H2O= 1.24kg Initial temp= 18.4°C Final temp= 37.6°C

The boundary line is the line on our graph where x or y equals infinity.

You guess on all of the answers on a 10 question quiz. If there are 4 possible answers for each question, what is the probability that you get 3 questions right? i've tried doing this problem multiple times and i'm just not understanding.. step by step wo...

ok i got to (2mol CO2 x -393.5kJ/i mol CO2 + 2mol H2O x -241.8kJ/ 1 mol H2O) - (1mol C2H6 x -94.0/ 1 mol C2H6 + 3mol O2 x 0kJ/ 1 mol O2) = (-1270.6kJ0 - (-84.0) = -1186.6kJ is this right? and how do i do the second part about expressing the enthalpy of re...

how do i express the enthalpy of reaction calculated in question above as a molar enthalpy of reaction per mole of carbon dioxide?

im doing ethene so it is -84.0. Howe do i spilt the two up? the second question confuses me and im completely frazled about what to do. C2H6(g) + 3O2(g) = 2CO2(g) + 2H2O(g) =(2mol CO2 x -393.5kJ/1 mol CO2 + 2mol H2O x -241.8kJ/ 1 mol H2O) - (1mol C2H6 x -...

1 . acd 2. a 3. b

1. igneous