I have calculate the heat energy of each reaction and used that to calculate the enthalpy change of each. I now need to determine the experimental molar enthalpy of the reaction between HCl …

HELP! Whats the accepted value of enthalpy change of the combustion of magnesium ?Please provide a reference source !!!Thanks

a) Calculate the average rate of the reaction during the first minute and during the second minute b) Why are these two rates not equal? For the reaction A + 2B === 2C, the rate of reaction is …

Oct 31, 2009 · The standard enthalpy of combustion of toluene is - 3910 kJ/mol. this is the value for the substance quoted in data tables which are nothing to do with this question.

Re: [Mass Calculations] I need help on serveral calculation prob Use this cheat sheet: Moles of substance X molar mass = grams substance grams substance / molar mass = moles …

Find the molarity of the resulting mixture when two solutions of different molarity mixed togather and volume are additive

Consider the combustion reaction between 21.0 mL of liquid methanol (density 0.850 g/mL) and 10.5 L of oxygen gas measured at STP. The products of the reaction are CO2 (gas) and H2O …

Calculate the pH of each of the following solutions at 25 degrees C. Identify each solution as neutral, acidic, or basic: [OH-] = 4.2 M [OH-] = 9.5 x 10^-9 M [OH-] = 2.3 x 10^-3 M [OH-] = 1.0 …

You help would be much appreciated. - Have 25 ml of 0.1M acetic acid (CH3COOH) + 25mL of 0.1M sodium acetate (CH3CHOONa). - What is the pH? - What is the new pH when 10 ml of …

44. iridium (Ir) has a face-centered cubic unit cell with an edge length of 383.3 pm. Calculate the density of a solid iridium. What is the equation? And what is the edge length? Can you please …