(ii) Calculate the value of x in the formula of the hydrated potassium carbonate, K2COxH2O.Show your working.X =[2](c)One of the errors associated with this method is caused by the solubility of carbon dioxide in water.Suggest two modifications which could reduce this error.modification 1...
Answer to: The fish has a body mass of 0.2 kg. Calculate the volume of water it will need to pass over its gills each hour to supply the oxygen...
21 (a) A student dissolves 0.6 g of zinc sulfate in 250 cm3 of water.(i) Calculate the volume of the water in dm3.Answer=...dm3 [1](ii) Use your answer to part (a)(i) to help you calculate the concentration of the zinc sulfate in g/dm3.Answer=...g/dm3 [1](b)Zinc...
1.A solution is labeled "0.450M magnesium nitrate." Calculate the concentration of each ion present in solution.2.Calculate the number of moles of KOH in 150.0 mL of a 0.500M KOH solution.3.Cauculate the new concentration when 50.0mL of water is added to 725.0mL of 1.25M NaCl. 相关...
where x is the mole fraction of the gas in the solution. - Rearranging the formula to find the mole fraction: x=PKH 4. Calculate the Mole Fraction of H₂: x=1bar71180bar=1.404×10−5 5. Calculate the Number of Moles of Water: - In 1 liter of water, the number of moles of ...
To calculate the mole fraction of ethyl alcohol (C2H5OH) and water (H2O) in the solution, follow these steps:Step 1: Calculate the moles of ethyl alcohol 1. Given mass of ethyl alcohol: 46 g 2. Molar ma
Assume the specific heat of the solution is that of water; 4.184 J/(g oC). (4) Calculate the enthalpy change of the reaction using equation (1) (Hrxn). (5) Assuming H2O2 is the limiting reagent, calculate the moles of H2O2. A 3.0...
H2O also known as Water Molar Mass of H2O:18.02 g/mol ElementSymbolAtomsMass % HydrogenH211.2% OxygenO188.8% Determine the molecular formula of the compound whose moles will be calculated. If this information is not already available, numerous reference books and online databases provide this info...
Calculate the molarityof a solution prepared by dissolving 23.7 grams of KMnO4into enough water to make 750 mL of solution. This example has neither the moles nor liters needed tofind molarity, so you must find the number ofmolesof thesolutefirst. ...
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