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A sulfuric acid solution is added to scale-forming water to convert calcium carbonate to calcium bicarbonate. write the chemical equation for this reaction.
The activation energy for the reaction is 48.1kj/mol. What is the half-life (in hr) in the winter (10.0 C)?
How many grams of dry NH4Cl need to be added to 1.80 L of a 0.800 solution of ammonia, NH3, to prepare a buffer solution that has a Kb of 8.87? for ammonia is 1.8E-5.
water expands when it freezes. How much work is done by 100g of water expanding as it freezes at 0 degrees Celsius and pushes back the wall of a pipe that exerts 1070 atm of pressure?
Nitrate ion (NO2)^(-1) can be analyzed by creating an acidic solution of nitrite ion and adding excess iodide (I)^(-1) ions creating NO and I2. The I2 combines with excess (I)^(-1) to create (I3)^(-1).
A nugget of pure gold of 4.80 grams absorbed heat of 283 Joules. if the temperature was 23.0°C initially then determine what was the final temperature of the Au gold it is given that the specific heat of Au= 0.129 J/(g·°C).
Calculate the amount of energy released in the formation of one mole of BaSe bonds (not lattice energy).
determine the empirical and molecular formulas of a hydrocarbon which has a molecular weight of 84 mass unit which contains 85.7% carbon.
Determine the amount of heat given off when 1.26 x 104 g of NO2 are produced express your answer (in kJ)?
If 3.25ml of vinegar needs 40.0 of 0.130M NaOh to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.30qt sample of this vinegar.
Lethality of Carbon Monoxide, Sulfur Dioxide and TNT, Air monitoring provides the following contaminant concentrations at the approximate center of a fire scene in which acres of automobile tires are burning
A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere of average radius 7.5x10^5 km, calculate the average density of the star in units of grams per cubic centimeter.
Phenol and straight chain alcohol, The compound C6H5OH is a phelol, and C6H13OH is a straight chain alcohol.
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