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A 12-gram mixture of methane, CH4, and ethane, C2H6, is completely combusted in oxygen. If the total mass of H2O produced is 23.4 grams, what was the approximate mass of the methane in the original mixture?
Describe how this observation is consistent with the law of conservation of charge.
Find the volume of a molar solution - What volume of a 0.250 molar solution of silver nitrate, AgNO 3 , is required to react with 18.6g of potassium phosphate
Calculating Internal Energy Change, The heat capacity of a bomb calorimeter is 87.5kJ K-1 (this value is for the total heat capacity, including that of the water jacket around the reaction chamber)
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
The vapor pressure for methanol and ethanol at 50 C is 406 and 222 Torr, respectively. Calculate the total vapor pressure of a mixture at 50 C that contains 0.2 mol of methanol and 0.1 mol of ethanol.
Phosphorus-32 has a half-life of 14.0 days. Starting with 8.00 g of 32 P, how many grams will remain after 112 days?
Reduction of Conjugated Ketones with Sodium Borohydride, Suggest mechanisms of reaction for 1,2-addition and for conjugate addition (1,4-addition) of NaBH4 to a conjugated
If a 1000 kilogram sample of rock is 0.021% gold by mass. How much zinc is needed to react with the gold extracted from the rock?
Two liters of a buffered solution are created from .55 M HC3H5O3 (Ka= 1.3 E-4) and .45 M NaC3H5O3. what is the pH of the solution?
Prepare the molecular formula for given compounds and determine the amount of molecules present and write the molecular formula and determine how many grams of each you have
What is the mass of silver bromide AgBr precipatated from 2.96 g of iron (III) bromide FeBr3 ? FeBr3 + AgNO3 = AgBr + Fe(NO3)3.
Find out the empirical formula also determine how many carbon,hydrogen, oxygen atoms are in there in this empirical formula?
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