Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Help.

  • 13-05-2010 7:44am
    #1
    united stars
    Closed Accounts Posts: 10 ✭


    Can anyone help me with this equation below and s there anybody out there giving grinds on chemistry and can do enthalpy reaction.combustion and equilibrium equations.Thank You.

    5.00g of octane was burned in a calorimeter in excess oxygen,
    100cm3 of water rose from 24.0c to 59.5c. calculate the enthalpy change for the reaction


Comments

  • #2
    SOL
    Registered Users, Registered Users 2 Posts: 1,155 ✭✭✭SOL


    well you can calculate how much energy was release by finding the specific heat capacity of water, then since you know how much water was heated by how much you can say how much energy was released. you can then divide this by 5 to get the change in energy per gram, or using it's molar mass calculate is as a kj/mol


Advertisement