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Convert the mass of 142 lb into atomic mass number. Express answer in scientific notation.
Pt(NH3)2cl2+h2o yields pt(NH3)2(H2o)cl+cl- has a rate that increases by a factor of 15 and a temeprature that inceases from 25 tp 50 degrees celsius what is the value of Ea?
In a particular titration experiment a 25.0 mL sample of an unknown monoprotic acid required 30.0 mL of .200 M NaOH for the end point to be reached
How many grams of water will be produced from the combustion of 28.06g of C2H4 in the presence of 32.00g of O2 if the reaction is 98.0%?C2H4 + 3 O2 yields 2CO2 + 2H2O
The function of this protein is to move protons through a water-filled cavity between the 12 helices. Which two of the following amino acid side chains would be most likely to line this water-filled channel?
Knowing that the solubility constant for iron (III) at a temperature of 25°C hydroxide is 6.3×10^-31, determine the concentration of Cr^3+ (M) in solution as well as the total mass of Cr^3+ (mg) in solution
Given that the density of water at 25 degrees celcius is 0.9970 g/mL. What is the minimum volume of water required to melt 40.9 g of ice?
A solution containing iodide ions has a percent transmittance reading of 72.3%. what is the molarity of the iodide ion in this solution
When 79.272 cg of nitrogen gas is reacted with 79.272 cg of hydrogen gas, how many grams of ammonia are formed?
Write both an equation using Lewis structures and a balanced chemical equation for the following reactions. Silicon atoms and chlorine molecules.
calcium carbide cac2 can be made by heating calcium oxide lime with carbon charcoal.? caos 3 cs heat asdagger cac2s
Calculate the equilibrium [F-] in a saturated solution of CaF2 and 0.0214 M Ca(NO3)2. Take ionic strength effects into account.
A 75.0 mL sample of acetic acid (HC2H3O2) is titrated to the equivalence point with 25.0 mL of 0.400 M NaOH. What is the molarity of the acetic acid solution?
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