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Problem- How many grams of NaCH3COO and HCH3COO need to be added to 0.500L of water to create a buffer that is 100mM acetic acid?pH= 5.0
Express your answer to two significant figures and include the appropriate units.
Mg3N2(s) + 3 H2O(l)= 3 MgO(s) + 2 NH3(g) How many moles of Magnesium oxide are produced by the reaction of 3.82g of Magnesium nitride with 7.73g of water?
What is the pressure in atmospheres inside a container of gas connected to a mercury-filled open-end manometer when the level in the arm connected to the container is 28.0cm higher than the level in the arm open to the atmosphere and the atmospher..
From this fact, we can deduce that a column of air one square inch in cross-section, measured from sea level to the top of the atmosphere, would weigh approximately 14.7 lb. Given that air has an average molar mass of 28.97 g, calculate the number..
This solution required 23.52 mL of 0.02318 M Zn2 for back titration. The Ni2 extracted from the column was treated witn 25.00 mL of 0.04299 M EDTA. How many milliliters of 0.02318 M Zn2 is required for the back titration of the Ni2 solution
calculate the concentration of bicarbonate ion hco3 - in a 0.010 m h2co3 solution that has the stepwise dissociation
A bag of fertilizer is labeled 15-20-5 (nitrogen-phosphorous-potassium). What is the actual percentage of phosphorous in the fertilizer
The drop of an electron from a high level to the ground state in a hydrogen atom would be most closely associated with (a) long wavelength radiation
A typical commercial-grade phosphoric acid solution is 75% phosphoric acid by mass, and has a density of 1.57 grams per milliliter. What are the molarity and molality of H3PO4 in this acid?
what is the bp of its enantiomer?What optical rotation would be observed if 7.2 g of (S)-amine were mixed with 7.2 g of the (R)-amine?
An element has ccp packing with a face-centered cubic unit cell. Its density is 11.4 g/mL and the unit cell volume is 1.21 x 10-25 L. Calculate the molar mass (g/mol) of the element to three significant figures.
Write balanced molecular equations, complete ionic equations, and net ionic equations for the following reactions. Write "NR" if there is no reaction. All reactants are aqueous solutions.
Some liquid antacids contain suspensions of aluminum hydroxide [Al(OH)3. Write a balance equation for the reaction of AL l(OH)3 with the HCl in stomach acid ( Include the phase of each substance)
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