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When limestone rock, which is principally CaCo3, is heated. carbon dioxide and lime, CaO, are produced by a decomposition reaction. If 11.7 grams of carbon dioxide is produced from the decomposition of 30.7 grams of calcium carbonate, what is the percent yield of the reaction?
Given that one mole of NaOH reacts exactly with one mole of potassium hydrogen phthalate, write the chemical reaction and calculate the number of milliliters of 0.100 M NaOH required to neutralize the 0.500 gram sample of potassium hydrogen phthal..
What would you expect the structure of the dinitro ester to be? Consider the directing effects of the ester and the first nitro group upon the addition
How do you know when an element that is by itself has an oxidation number of zero or its charge
iron has a density of 7.874. gcm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000
For a certain experiment, R-140a vapor is contained in a sealed glass tube at 20 degrees celcius. We want to know the pressure at this condition, but there is no means of measuring it since the tube is sealed
Furthermore, by carefully monitoring the volume change it is determined that 92kJ of work is done on the mixture during the reaction. Calculate the change of energy of the gas mixture during the reaction in kJ.
a chemist studying the properties of photographic emulsions needed to prepare 500 ml of 0.174 m agno3aq. what mass of
What determines whether 2-bromobutane undergoes an SN1 or an SN2 reaction? How would you favor SN2 formation
The enthalpy change for the reaction of hydrogen gas with flourine gas to produce hydrogen flouride is -542kJ fo the equation as written H2+F2=2HF deltaH=-542kJ
what mass of this substance must evaporate in order to freeze 190 of water initially at 24? the heat of fusion of water
What error will this cause in their determination of the amount of iron in the table?
A reaction has (deltaH)=98kJ and (deltaS)=292J/K. Investigate the spontaneity of the reaction at room temperature. Would increasing the temperature have any effect on the spontaneity of the reaction
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