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

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.

When LiNO3 dissolves in water, the enthalpy of solution is -2.5 KJ/mol. The standard enthalpy of formation of solid LiNO3 is -483.1 KJ/mol. (a)When LiNO3 dissolves in water, is the dissolution …

Re: molar concentration calculations Ka is the symbol for the ionization constant for an acid. It is a type of equilibrium constant. For any weak acid (HA) that ionizes to form an equilibrium …

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 …

(a) Using this rule, calculate the specific heats of copper and platinum. (b) A 35g sample of an unknown metal at 81.0 o c was placed in 50.0g of water at 23.0 0 C. The final temperature of …

10.0 mL of household vinegar was places in a 250 mL volumetric flask; distilled water was added until the total volume of the solution was 250.0 m. A 25.0 mL portion of this dilute solution was …

Ok here goes. "Calculate the number of electrons gained or lost in each of the following cases. State whether the substance is oxidized or reduced." S in H2SO4 ---> SO4 {2-} So H2 has an …

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 …