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In a titration reaction 25cm3 of 0.1M HCl neutralized 20 cm3 of NaOH. Calculate the concentration of the alkali in moles per litre.
Distinguish between a real gas and an ideal gas. How does increasing the temperature of a gas in a closed vessel affect the pressure
The mole fraction of O2 in the air is 0.2094, and the mole fraction of N2 is 0.7809. Calculate the density of air at 25 degree celcius and the pressure is 1.00 atm.
an ideal gas at 25 ºC and 5 bar are expanded to a final pressure of 1.00 bar. Assuming Cv=3/2 R, calculate deltaU, deltaH, q, w, and DS if the process is
You melted a copper cylinder of volume 10.0 cm3 to fabricate a thin long wire of diameter 0.02 mm. What is the length of your wire in meters
Determine the oxidation of each element in the following compounds: a. CH3COO- b. NaClO3 c. Al2O3
The zinc in a 1.274g sample of foot powder was precipiated as ZnNH4PO4. Strong heating of the precipiate yielded 0.4089g Zn2P2O7. Calculate the mass percent of zinc in the sample of foot powder.
Assuming that you start with 2.00 g of sodium benzoate and 5 mL of 3M HCl, how many molar equivalents of HCl are you using? Use two decimal places.
When 75 grams of ammonia, 90 grams of carbon dioxide and 61 grams of water are reated to form ammonium carbonate whe is the limiting reactant and how many grams will be formed
if copper has a photoelectric threshold wavelength of 279 nm calculate the velocity ms of the electron emitted when
you prepare a buffer solution by dissolving 1.77 g each of benzoic acid hc7h5o2 and sodium benzoate nac7h5o2 in 900.0
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
High temperature and low pressure low temperature and high pressure none of the above unless a catalyst is present If it's endothermic, it's high temp and low pressure, but does having an exothermic reaction change that?
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