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Write the equation and states 1. a double replacement between copper (II) nitrate and sodium phosphate. 2. Sodium reacts w/ a solution of iron (II) sulfate forming solid iron and sodium sulfate.
To determine the number of molecules present in air using the ideal gas law and Avogadro's number - how many molecules of each type of gas are present in 1.0 L of air at STP?
Back titration with .02127 M Zn2+ at pH 5 reqired 23.54ml to reach the xylenol orage end pt. a 2.00ml sample of unknown was passed thru an ion-exchange column designed to absorb co2+. the Ni2+ that passes thru ion-exchange column was treated with ..
Calculate: (a) The partial pressure of each component. (b) The mass fraction of methane. (c) The average molecular weight of the gas mixture. (d) The density of the gas mixture in kg/ m3. write the steps please
How to carry out a calorimetry experiment to determine the delta H for the exothermic reaction of Ca(OH)2 (s) and HCl (aq). Predict how each of the following will affect the calculated value of Delta H.
Give three differences that might be noted between the titration curve for hydrochloric acid and a titration curve for a weak unknown acid?
Pd has a FCC lattice in which hydrogen atoms occupy octahedral holes. If 70% of the holes are filled by hydrogen atoms and the lattice does not expand upon hydrogenation, how many grams of hydrogen will be contained in one cubic centimeter of the ..
Concentrated HCl was added to a Ca(OH)2 suspension (in water) and the precipitate dissolved. Explain this observation on the basis of a Le Chatelier's shift in the equilibrium.
Hydrogen Sulfide gas has toxicity comparable to Hydrogen Cyanide, but because of its intense odor its presence is observed at concentrations well below toxic levels.
A tank contains 480. grams of oxygen and 80.0 grams of helium at a total pressure of 7.00 atm. Calculathte following.
The pKa values of a compound with two ionizable groups are pKa1 = 4.10 and pKa2 between 7 and 10. A biochemist has 10 mL of a 1.0 M solution of this compoud at a pH of 8.00. She adds 10.0 mL of 1.00 M HCl,
How many OH- ions appear in the correctly balanced equation, and on which side of the arrow?
A buffer solution is prepared by placing 5.86 grams of sodium nitrite and 32.6 mL of a 4.90 M nitrous acid solution into a 500.0 mL volumetric flask and diluting to the calibration mark
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