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Consider the dissolution of magnesium (s) in an aqueous hydrochloric acid solution. What minimum amount of 1.85 M hydrochloric acid is nessecary to produce 28.5 L of hydrogen at STP?
90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. the boiling point of this solution
25.0 cm3 of a saturated solution of Ca(OH)2 required 21.0 cm3 of 0.0500 mol dm-3 HCl for complete neutralisation. Calculate the [OH-(aq)] and the [Ca2+(aq)] in the saturated solution.
If the concentration of bromide ion in a saturated solution in equlibrium with PbBr2 solid is determined to be .0125M what is the solubility of PbBr2
What is the pH of a solution that is prepared by dissolving 9.81 grams of acetic acid (60.05 g/mol) and 8.68 grams of sodium acetate (82.03 g/mol) in water and diluting to 800 mL.
nh3 is kept in a cylinder with a movable piston at the temperature of 25 degree celcius and the pressure of 2.50 atm
95% wt solution of ethanol in water has density of 0.804gm/mL. Find mass of 1.00L of this solution and the number of grams of ethanol per litre ?
calculate the amount of heat required to heat a 46 sample of ethanol from 10.0 to 18.0. specific heat capacity of
Electron configurations are a shorthand form of an orbital diagram, describing which orbitals are occupied for a given element. For example, 1s^22s^22p^1 is the electron configuration of boron.
What is the sum of the coefficients when the following equation is balanced using the lowest, whole numbered coefficients
Draw the carboxylic acid produced from the acid hydrolysis of butyl acetate (butyl ethanoate)
Calculate the de Broglie wavelength of a 143g- baseball traveling at 90mph ?
How many grams of magnesium oxide are formed when 14.8 of oxygen gas, measured at STP, completely reacts with magnesium metal according to this reaction
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