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A solution is prepared by dissolving 49.3 g of of KBr in enough water to form 473 mkof solution. calculate the mass % in the soulutionif the density is 1.12 g/mL
Calculate the concentration of Na+ ions (in mol/L) for each of the following. a) A 41.0 mL sample of 2.0 M Na3PO4 which has been diluted to 300.0 mL b) 8.50 g Na2CO3•5H2O(s) is made up in a total volume of 3.50 L
When 190.0 mL of 0.360 mol are added to 190.0 mL of 1.00×10?2 M AgNO3 (aq), what percentage of the Ag+ is left unprecipitated?
What volume of 0.420 M NaOH solution is needed to completely neutralize
a 40 gram sample of water at 25 degrees celcius absorbs 500 joules of energy. what is the final temperature of the water? the specific heat of water is 4.18 joules/g degrees C.
25.0 ml of ethanol density 0.789 gml initially at 7.4degc is mixed with 32.1 ml of water density 1.0 gml initially at
For each of the following combinations of (delta H) ?H° and (delta S ) ?S° for the reaction at 25 ° C, describe whether or not the reaction will be spontaneous at 25 ° C and what will happen it the temperature is increased. Explain your descriptio..
determine how many kgs of methane ch4 are in completely insulated piston with the given properties pressure 3 bar
Write the balanced chemical equation using the lowest possible whole number coefficients for Fe2O3+2Al = 2Fe+Al2O3.
For each solution, calculate the number of moles of acid added. 3. For each solution, calculate the number of moles of OH- ion added.
Starting with 86.3 g NO and 25.6 g H2, find the theoretical yield of ammonia in grams
Write and balance the equation for the complete combustion of ethane, C2H6. You do not need to include any phase symbols
Calculate the pH in the solution formed by adding 10.0 mL of 0.100 M HCl to 20.0 mL of 0.100 M NH3
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