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How many grams of FeSO4*(NH4)2SO4*6H2O (MW 392.14) must be dissolved and diluted to 250.0 mL to prepare an (aq) solution of density 1.00g/mL that is 1.00 ppm Fe2+ by wt
An athlete takes human growth hormone (HGH) that enhances his ability to have the best time of any Olympic marathon runner in history.
In which of the compounds CH4, NH3,H2O, SiH4, or H2S does hydrogen bear a partial negative charge
Then 10.00ml of this solution is diluted further to 100ml. What is the molarity of this last solution?
a total of 2.00 moles of a compound is allowed to react in a foam coffee cup that contains 127g of water. the reaction
radio wave radiation falls in the wavelength region of 10.0 to 1.00e3 meters. what is the frequency of radio wave
A list of the calorie content of foods indicates that a 10 oz chocolate thick shake contains 331 Calories. Express this value in kJ and in J
A 2.9 m solution of methanol (CH3OH) in water has a density of 0.984 g/ml. What are the a) mass percent, b) molarity, and c) mole fraction of methanol in this solution?
how many of joules of heat are needed to raise the temperature of 10.0g of aluminum from 22 degrees c if the specific
Titrated three different samples of KHP and determined that the sodium hydroxide molarity was 0.1234 M, 0.1244 M, and 0.1199 M, respectively. Calculate the sample mean and the sample slandered deviation?
To determine the freezing points of distilled water, 1m glucose, 1m NaCl, 1m CaCl2. Use the freezing point of the pure water as a baseline to determine deltaTf for each of the solutions
If atom X forms a diatomic molecule with itself, the bond is A) ionic B) polar covalent C) nonpolar covalent D) polar coordinate covalent
Calculate the partial pressure of ammonia at equilibrium when a quantity of ammonium idodide in heated to 400 degree C.
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