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A 12.7 g sample of an aqueous solution of perchloric acid contains an unknown amount of the acid.
If 25.0 mL of 0.431 M sodium hydroxide are required to neutralize the perchloric acid, what is the percent by mass of perchloric acid in the mixture?
State the mass balance and charge balance equations for a solution containing .200F La2 (SO3)3 and .100 F Na2S (pka 1 and pk2 for H2SO3 are 1.852 as well as 7.157 respectively and 7.02 and 13.50 for H2S respectively)
consider 25.0 g of water at 21.7degc that are mixed with 25.0 g of water at 43.3degc in a foam cup calorimeter. the
The Dumas method is used to analyze an unknown substance. 0.500 g of liquid was place in the 800.0 mL bulb. When heated to 68.7 C, the liquid vaporized, and the pressure was measured to be 154.5 mmHg.
How many kilograms of CaH2 are needed to fill a 134 L tank with compressed H2 gas at 154 atm pressure and 22 degrees celsius?
1.using a sample of 21.2 ml of a weak monoprotic acid hx requires 50.0 ml of 0.045 m sodium hydroxide to reach to the
Question- Sort the isotopes: thorium-232, sodium-26, flourine-17, bromine-90, iridium-164 into their categories: Alpha decay, beta decay, 0/1e emission, or 0/-1e capture
The percent by mass of bicarbonate (HCo3-) in a certain Alka-Seltzer product is 32.5%. Calculate the volume of CO2 generated in ml at 37 degree C and 1 atm when a person ingests a 3.29 g tablet.
Exactly 100 mL of 0.15 M HNO2 is titrated with a 0.15 M NaOH solution. What is the pH at the equivalence point. The Kb of NO2- is equal to 2.2 x 10-11.
Determine the pH of a solution that is 0.15 M HClO2 (Ka=1.1 x 10-2) and 0.15 M HClO (Ka=2.9 x 10-8).
Exactly 100 mL of 0.10 M nitrous acid (HNO2) are titrated with a 0.10 M NaOH solution. Calculate the pH for the following. (a) the point at which 80 mL of the base has been added
the reaction proceeds via successively faster halogenations at the -position until the 3 h have been replaced. explain
Gallium crystallizes in a primitive cubic unit cell. The length of an edge of this cube is 362 pm. What is the radius of a gallium atom
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