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An aqueous solution formed by dissolving 1.62 grams of anhydrous Aluminium chloride in 50.0 grams of H2O has a freezing point = -1.74 °C. compute the boiling point of this solution if Kf and Kb for H2O are given as 1.86°C/m and 0.512 °C/m , respectively.( suppose the boiling point of H2O= 100.000 degree celsius)
Fundamentals of acids and bases - Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. Find the molar concentration of these ions in water at 25 o C?
Determine what volume of N 2 is released at 0.915atm of pressure and at the temperature of 25 degree celcius from a tank full of liquid N 2 ? (d=0.808g/mL)
Calculate the amount of energy present in the following photons and find the region of electromagnetic spectrum for each.
A rock contain 3.2 grams of a radioactive isotope, uranium-235, . Determine what was the original amount of uranium-235 in the rock If the rock has undergone 2.75 half lives, and how old is the rock?
Compute the number of moles of sodium hydroxide ( NaOH ) in 23.75cm 3 of 0.150moldm -3
determine How many grams of Phosphine (PH3) can produce if 37.5 grams of P4(phosphorus) and 83.0 Litres of H 2 gas react at STP?
Properties of subatomic particles - Fill in the missing relative masses and relative charges for each of the subatomic particles
Determine at what temperature should the reaction be run to get a seventy five conversion of carbon monoxide?
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl . ClxOy in presence of H2 (g) → HCl + H2O all the oxygen
Determine the molar mass of the substance if 120.0 grams of a pure sample contained 24.0 mol of the substance. Express your answer in g/mol.?
where all compounds are assumed as covalent then determine which reaction must be endothermic and also explain your answer briefly?
volumetric flask and this solution becomes quite warm, but after it is permitted to return to room temperature, H 2 O is combined to total 500 mili litres of solution. Compute the pH of the final solution. ?
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