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Calculate the amount of energy (in kJ) needed to change 15.5 grams of ice at 0.00 oC to water at 25.00 oC. The specific heat of water is 4.184 J/g.oC and heat of fusion is 335 J/g.
How much heat is produced in burning 5 mol of C2H2 under standard conditions if both reactants and products are brought to 298 K
Calculate the molarity of a solution by dissolving 0.710 grams of Na2SO4 in enough water to form exactly 900 mL of solution
What is the percent dissociation of HNO2 when 0.060g of sodium nitrate is added to 105.0 mL of 0.060 M HNO2 solution? Ka for HNO2 is 4.0 x 10^-4
If the product temperature is 20°C throughout the dryer and the specific heat of product solids is 2.2 kJ/(kg °C), determine the quantity of heated air required for drying the product at a rate of 100 kg/h. Determine the relative humidity of outle..
a scuba diver with a lung capacity of 5.1 l inhales a lungful of air at a depth of 44 m and a pressure of 5.4 atm.if
Styrenes empirical formula is CH. What mass of styrene contains 6.48*10^21 atoms of hydrogen.The molar mass of styrene is 104g/mol.
A sample of gas occupies a volume of 364 mL at 1.28 atm and 27 oC. Calculate the volume of the gas if its temperature is changed to 57.0 oC while its pressure is held constant.
Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous. O2(g) + 4H+(aq) + 4e- Picture 2H2O(l); E° = 1.229 V Al3+(aq) + 3e- Picture Al(s); E° = -1.662 V Overall reaction: 4Al(s) + 3O2(g) + 12H+(aq) ? 4Al3+..
An electron in a hydrogen atom goes through a change in energy level from n=4 to n=2 calculate the wavelength of the photon. Assume wavelength =470nm calculate the energy photon.
What mass of oxygen (in grams) reacts when 14.2 g of ethanol (CH3CH2OH) are combusted in oxygen to produce carbon dioxide and water
Through what factor would one expect the intensity of carbon tetrachloride Raman lines to increase while changing the laser source wavelength from 868.8 nm to 450.3 nm
Define the total mass flow rate of a process stream is 67 kg/h. If the mass fraction of toluene in the stream is 0.65. Explain what is the mass flow rate of toluene
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