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N2H4(l ) + O2(g) -> N2(g) + 2 H2O(l ) H = -622.2 kJ
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid. Hf H2O(g) = -281.8 kJ/molHf H2O(l) = -241.8 kJ/mol
Calculate (approximate) the pH of a 0.30M solution of ascorbic acid. Must use an ICE table (Initial Concentration, Change in Concentration, Equilibrium Concentration) and the quadratic formula unless the "x is small" approximation can be used.
Which of the following statements is/are correct. i. KBr, HClO3, and HClO2 are strong acids ii. NaH, KOH, and Li2O are strong bases iii. HI, HClO3, and HNO3 are strong acids
If Kp = 0.032 at this temperature, what will be the equilibrium overall pressure starting from pure CaSO4(s)?
the iodine be located on the same carbon with opposite placement
the temperature of a 2.0 liter sample of heluim gas at STP is increased to 27 celsius and the pressure is decreased to 80.0 kPa. what is the new volume of the helium sample.
Nickel nitrate and potassium carbonate react to form nickel carbonate and potassium nitrate. How many milliliters of 0.55M Ni(NO3)¬2 are needed to react with 85 mL of 0.25M K2CO3? First, write a balanced equation.
the practical benefits of using a more favorable direction of the reaction for a routine enzyme activity assay
why metal sulfide compounds can only form after the hydrothermal fluids escape into the open seawater.
A weather ballon is filled with helium to a volume of 305L at 28 degree celcius and 751 mmHg . The ballon ascends to and altitude where the pressure is 504 mmHg and temperature
propose two reasons why the results of some of your reactions in this lab do not agree with what is predicted using the established solubility riles.
We are now processing magnesium fluoride from a mine in Elko. It can be used to coat binocular lenses. The Ksp for magnesium fluoride is 3.7 x 10^-8 at room temperature. Determine how many grams of magnesium fluoride is precipitated out if we plac..
500.0ml of 3.00m hydrochloric acid reacts with 3.4 zg s. determine the limiting reactant and also calculate how much of
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