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Calculate the number of grams of KClO3 needed to make 400 mL of 0.913 M solution.
Find out the amount of energy released by this process of fission of a single U 235 atom and expree your answer in joules?
Calculate the pressure that must be applied in order to increase its density by 0.08 percent.
butane has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -.4 degrees Celsius. A 250 mL sealed flask contains .75 g of butane at -22 degrees C.
The concentration of each gas once equilibrium is reached. The new equilibrium concentrations if the volume is suddenly halved (still at 298K)
A solution of phosphoric acid was made by dissolving 10.0g H2PO4 in 10.0 mL of water. The resulting volume was 104 mL. Calculate density, mole fraction, molarity, and molality of the solution.
In a titration experiment, a 12.5 mL sample of 0.0500 M KOH neutralized 14.7 mL of HNO3 solution. Calculate the molarity of the HNO3 solution.
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
Calculate the potential of the cell be if the mass of the Iron (Fe) electrode (MW = 55.85 g/mol) is 62.0 g?
A lead fishing weight with a mass of 68 g absorbs 146 cal of heat. If its initial temperature is 56°C, what is its final temperature.
The component of structure responsible for holding the 4 chains of hemoglobin together is a. primary
Determine the molecular formula of a compound which has a empirical formula of CH3 and a molar mass of 60.0 g/mol.
A mole of photons in the blue visible region of the electromagnetic spectrum has an energy of 2.54 × 10 2 kJ/mol, calculate the frequency in s-1 of the photon.
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