Write a thermochemical equation for the given reaction
When 1 mole of H2 gas reacts with 1 mole of F2 gas, 2 moles of HF gas are produced and 536 kJ of energy is released. Is this an endo or exothermic reaction? Write a thermochemical equation for this reaction.
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Calculate the equilibrium concentrations of H2O, CO2, and H2 in a reaction mixture obtained by heating 6.00 of steam and an excess of solid carbon in a 4.25 container.
How much heat is needed to melt 1050g of the unknown at 510k. the melting point of the solis unknown is 670k and the boilding point is 800k.
Ascorbic acid (vitamin C,c6h8o6) is a water-soluble vitamin. A solution containing 80.5 g of ascorbic acid dissolved in 200 g of water has a density of 1.22 g/ml at 55 c.
A physician wrote a prescription for Tylenol 325 mg/5mL with codeine 10 mg/5mL, 5mL three times a day for 4 days as needed for cough. How much Tylenol in milligrams is contained in a teaspoonful?
What are some possible sources of error that might lead to an erroneous determination of concentration of acetic acid.
An empty flask has a mass of 123.4 g. When the flask is filled with water, the mass is 211.6 g. If 10.0 g of zinc. what is the new mass of the flask?
187 g of sodium azide is dissolved in water to make a solution with a final volume of 1.0L. What is the concentration and pH of the solution?
When 2.00 moles of H2O react, how many grams of NH3 are produced?
On a particular day, the barometric pressure at the top of the mountain was 330 torr. On that day, at what Celsius temperature did water boil on the top of the mountain?
A sample of propane,C3H8, contains 11.7 moles of carbon atoms. How many total moles of atoms does the sample contain?
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There are a number of systems to analyse qualitative data. Which system allows the data to 'speak for itself', with themes emerging from the discussions
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