Total # Posts: 21
The decomposition of dinitrogen tetroxide produces nitrogen dioxide: N2O4 (g) ---> 2 NO2(g) ΔG°= 2.80 kJ/mol Find the minimum partial pressure of N2O4 at which the reaction is spontaneous if P(NO2)=2.00 bar and T=298 K.
June 12, 2012
How to calculate the theoretical yield of aspirin to be obtained when 2.0 g of salicylic acid and 5.0 mL of acetic anhydride (density = 1.08 g/mL) are mixed together? ( Molar masses: acetic anhydride = 102.1 g/mol; salicylic acid = 138.2 g/mol)
January 6, 2010
Water has a van der Waals constants of a = 5.464 L·atm/mol2 and b = 0.03049 L/mol. What is the pressure of 5.20 moles of water vapor in a 1.10 L container at 100.0°C? I Don't understand this problem!
May 10, 2009
can you revise this? Perdon, necesito ayudar en mi cuarto Si que es la probelma, senor? Mi cuarto es muy sucio, mi cuarto esta calor, no megusta la servicia, y los drogadictos esta en mi piso Todo esta bajo control Usted es el gerente? Senor, su cuarto puede ser limpiado. Los ...
May 5, 2009
Precalc growth and decay
Alison deposits $500 into a new savings account that earns 5 percent interest compounded annually. If Alison makes no additional deposits or withdrawals, how many years will it take for the amount in the account to double? the answer is 15 but i think its 14. please explain.
April 19, 2009
im sorry my post appeared twice it didn't show my question when i looked then when i posted it again it was there. Im sorry my computer is a bit slow. thankyou for your help now you have explained the question ive got an idea what i need to do. Thankyou again!
March 17, 2009
year 8 re-Re teachers
i posted this question before but can`t see it on the page.sorry if it is there. please could someone help me i need to write an essay for re . i don`t really understand what to do. if someone could explain the question id be very grateful.We had a supply teacher but she wasn...
March 16, 2009
year 8 RE - re teachers
Please could someone help me with my re homework. i need to write an essay.this is the question:- Show how religious beliefs and practices may be connected to the needs and concerns of people living at different times and in different situations. Please could you explain what ...
March 16, 2009
history-the gold rush
does anyone know good websites where i can find info about the gold rush. i need to make a journal and include information about what the journey was like, how i heard about it things like that. thanks!
September 26, 2008