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When 1.0L of1.0M Ba(No3) solution is mixed with 1.00L of 1.05 M Na2So4 solution at 25 degree C in Coffee cup calorimeter. The reaction is Ba(NO3)2(aq)+Na2so4(aq)toBso4(s) + 2NaNo3 (aq). The final the mixture increasing to 28.1 C degree. Calculate the enthalpy change per mole for this process. ( Assuming C=4.18 J deg c^-1 g^-1 and density of the final solution is 1.00g/ml).
how many moles of ammonia are produced? How many moles of H2 remain? How many Moles of N2 remain? What is the limiting reactant?
find the number of moles of water that can be formed if you have 218 moles of hydrogen gas and 104 moles of oxygen gas
Calculate the standard cell potential and equilibrium constant at 25 C for the cell reaction in a direct methanol fuel cell. 2CH3OH (l) + 3O2 (g) --> 2CO2 (g) + 4H2O (l)
Elemental "white" phosphorus exists in nature as P4 molecules, in which all the P atoms have identical bonding. (a) Draw a Lewis Structure that represents this molecule.
Suppose that 24 g of each of the following substances is initially at 25.0^circ C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
What is the percent by mass of NaHCO3 in a solution containing 20 g NaHCO3 dissolved in 700 mL H2O?
what are the freezing point and boiling point of an aqueous solution of 15.5g glucose (c6h12o6) dissolved in 150 g of water?
Sulfur dioxide is released in the combustion of coal. Scrubbers use aqueous slurries of calcium hydroxide to remove the SO2 from flue gases
What is the volume occupied by one mole of helium at 0°C and 1 atm pressure?
Differentiate between alkenes and alkynes, cis isomers and trans isomers. Describe how cis- trans isomers are used for night vision.
Calcium carbide, CaC2, reacts with water to form acetylene. CaC2(s) + 2 H2O(l) C2H2(g) + Ca(OH)2(s) How many grams of water are needed to react with 473 g of calcium carbide?
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
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