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a solution made by dissolving 0.875 g Co(NH3)4Cl3 in 25.0g of water freezez at -0.56 degrees C. Calculate the number of moles of ions produced when one mole of Co(NH3)4Cl3 is dissolved in water.
A sample of gas with an initial volume of 32.5 L at a pressure of 760 mmHg and a temperature of 315 K is compressed to a volume of 16.3 L and warmed to a temperature of 435 K
If a bottle of nail polish remover contains 176 mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788g/mL.
Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride. What is the formula of the compound that precipit..
There is less waste. II. Harsh reagents are avoided. III. It uses recombinant technology. IV. It needs intense purification.
A 1.000 g sample of a compound containing C, H and O is burned in excess oxygen, producing 1.783 g CO2 and 0.734 g H2O. Determine the empirical formula of the compound.
Does ammonium chloride added to water produce a simple solution, does the ammounium chloride dissociate or does a chemical reaction occur resulting in a new set of compounds.
Hydrogen was cooled from 150 c to 50 c. It's new volume is 75 ml. What was the original volume?
How much Fe++ could be present in water containing 0.4 x 1e-02 M HCO3- (bicarbonate) without causing the precipitation of FeCO3 (Ksp=10**(-10.7))
If 20.0 mL of 0.12 M cobalt(II) nitrate is reacted with 15.13 mL of 0.097 M sodium phosphate, which of the two reactants will be left over and which will be completely consumed.
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
Dalton law of partial pressure - The partial pressure of oxygen is maintained at 0.20 atm at this depth
A green leaf has surface area 2.05 cm^2. If solar radiation is 1190 W/(m^2) , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
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