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HCL solution has a lower concentration than what is indicated. will this result indicate the presence of more or less moles of base in the antacid?
Calculate the molality of a solution that is prepared by mixing 25.5 Ml of CH3OH (d=0.792 g/ml ) and 387 mL of CH3CH2CH2OH ( d=0.811g/mL
A ground-state H atom absorbs a photon and makes a transition to the n = 4 energy level. It then emits a photon of energy 4.085 x 10^-19 J. What is the final energy and n value of the atom
what is the formula for the compound that crystallizes with a cubic closest packed array of sulfur ions and that contains zinc ions in 1/8 of the tetrahedral holes and aluminum in 1/2 of the octahedral holes
The density of hexa-fluorobenzene is 1.61 g/ml. If you mix dichloromethane, water and hexafluorobenzene together how many layers will there be and what will their positions be
Compare the amounts of reactants and products that will be present when the system reaches equilibrium. c. When the system reaches equilibrium, the value of K will be: A) less than 1 B) equal to 1 C) greater than 1
If 164 of wet is collected over water at 24 degrees C and a barometric pressure of 737 Torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 Torr)
What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.518g/L at 25 ?C and 721
The measured density of a certain gaseous amine at 0 C as a function of pressure is: P(atm) 0.200 0.500 0.800
sodium carbonate na2co3 can be produced by heating sodium bicarbonate nahco3. a student heats 5.128 g sodium
Suppose the maxium pressure the vessel can safely with stand id 1.60 atm. what is the maxium temperature in K the gas can have before its pressue might burst the vessel
the two complimentary single strands of DNA shown below can form (at least) three secondary structures upon annealing. Name three of them.
If 30.0mL of .150M calcium chloride is added to 15.0 mL of .100 M silver nitrate what will be the final concentration of all ions the remain in the solution?
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