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Compare the processes that occur when hydrogen chloride (HCl), dissolve in water. What would the equation be and how would you draw a sketch showing the form in which the compound is present in its respective solution.
Sodium bicarbonate is often used as an antacid to neutralize excess hydrochloric acid in an upset stomach. What mass of hydrochloric acid (in grams) can be neutralized by 2.3g of sodium bicarbonate?
Explain how long will it take in seconds for the water to reach boiling. At approx. Define what time does the water first begin to boil. Compute q for water and the pan and remember density
Describe the basic structure of the periodic table. Give at least three examples of "periodic trends" observed based on the periodic table.
Combustion of 2.000g of an unknown compound resulted in 4.883g of CO2, and 1.999g of H2O. This compound is known to only contain C, H, O,. What is the empirical formula of the unknown compound
KCL,KCLO3, and MnO2 having a total wight of 23.584 was jeated tp decompose the KCLO3. After heating, the mass was found to be 22.347g. how many moles of oxygen gas was evolved.
If it takes 91.7 min for the concentration of a reactant to drop to 20% of its initial value in a first-order reaction, what is the rate constant for the reaction in the units min-1? min-1
A solution is made by mixing 506 mL of water and 198 mL ethanol. What is the concentration of ethanol in units of volume/volume percent.
Explain what are the structures of the major and minor products obtained when 1- methylcyclohexanol is dehydrated using concentrated sulphur acid. Distinguish from each other using any of the tests for un-saturation Explain in the procedure. If ye..
The standard molar enthalpy of vaporization for water is 40.79 kJ/mol. What mass of steam is required to release 500. kJ of energy upon condensation? (Molar mass of water is 18.02 g/mol.)
in a laboratory practical exam students were asked to prepare an aqueous buffer solution having a ph close to 9. which
Small helium-neon lasers emit 1.51 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
The presence of reductants can enhance the thermodynamic favorability of the decomposition of nitrous oxide (N2O). Calculate deltaH
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