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A sample of nickel is heated to 99.8 degrees C and placed in a coffee cup calorimeter containing 150.0g water at 23.5 degrees C. After the metal cools, the final temperature of metal andwater mixture is 25.0 degrees C. If the specific heat capacity of nickel is 0.444J/(degreesCg), what mass of nickel was originally heated?
Calculate the hydronium ion concentration and the pH of the solution that results when 20.0 mL of 0.15M acetic acid, is mixed with 5.0mL of 0.17M sodium hydroxide.
An unknown metal hypochlorite salt, M(ClO)2, is subjected to analysis by iodometric titration: the salt is dissolved in dilute sulfuric acid, treated with excess aqueous KI,and then titrated with Na2S2O3. The unknown metal ion(M2+)
the sales of gourmet popcorn seems to be losing market share and a number of seemingly unknown brands are creating
Determine How much sodium hydroxide (in grams) is required to form 546 mL of solution with a pH of 10.00?
A certain commercial process relies of the addition of NH4NO3 to a solution of their proprietary compound. The Chemist develops a plan to add 6.55 pounds of NH4NO3 to 14.0 gallons of water.
How can I make up 100ml of a solution containing Compound A (solid, purity of 83.7%) at 90 ug/ml and compound B (liquid, density 1.12 and purity of 90.5) at 30 ug/mL for HPLC reference standard.
when the explosion destroys the bomb casing the gas is released into the atmosphere where it reaches a pressure of 1.00 atm. what is the volume of the gas after the explosion? assume constant temperature and number of moles.
the label on an aerosol spray can contains a warning that the can should not be heated to over 130degf because of the
A compound has 2 ionizable groups, with pKas of 6.2 and 9.5. A 1.0 M solution of this compound (100 mL total volume) is found to have a pH of 6.8. A biochemist adds 60 mL of 1.0 M HCl to this solution. The solution pH is now:
use a solid line to represent the correct calibration line and a dotted line for the line with the systematic error.) Also discuss the advantages and disadvantages of spectral methods of analysis.
If a gas occupies 22.2L at 825mmHg and 35 degree C, what pressure will it exert at 18.2L and -11 degree C
In a test tube, 10 mL of 0.100 M KI and 10 mL of 0.100 M Na2CO3 are mixed. Next, 0.10 M lead nitrate is added drop wise. What will be the concentration of CO3 2- when PbI2 first starts to precipitate? Ksp (PbCO3) = 1.5 x 10^-13 Ksp (PbI2) = 8.7 x 1..
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