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Question- In the colorimetric (color producing) assay for iron used in this lab; potassium thiocyanate, KSCN, is added to produce a deep red colored precipitate. The lab outline suggests that H2O2 may be added to enhance the color. Write a balanced chemical equation showing the function of the peroxide. In your equation identify the oxidizing agent and the reducing agent
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when 1.000g of tropinone is burned in a calorimeter with heat capacity of 25.950kjc the temperature increases from
Question- Given that Kw for water is 2.4× 10-14 at 37 °C, compute the pH of a neutral aqueous solution at 37 °C, which is the normal human body temperature.
What is the ppm concentration? The molar extinction coefficienet is 87,000 M-1cm-1 and the molecular weight is 407.98 g/mol. The density of water is 1.00 g/mL
suppose you calibrated an apparatus by injecting 20.0 ml of air at 0.933 atm and 23.1.c into your apparatus containing
Calculate the weight percent composition of the mixture, using the same assumptions as in part A.
Can someone please help me I need to A. Write the complete equation for each reaction that produced a precipitate
Calculate the number of calories needed to increase the temperature of 50.0 g of copper metal from 21.0 degrees C to 75.0 degrees C. Given, the specific heat of copper is 0.382 cal/g x degrees C.
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
the specific heat capacity of silver is 0.235 jgmiddotk. its melting point is 962degc and its heat of fusion is 11.3
If 25.1 mL of 0.1222 M NaOH id required to reach the first equivalence point of a solution of citric acid (H3C3H5O7), how many mL of NaOH are required to completely neutralize this solution
A piece of metal of mass 18 g at 117?C is placed in a calorimeter containing 48.2 g of water at 21?C. The final temperature of the mixture is 85.4?C. What is the specific heat capacity of the metal? Assume that there is no energy lost to the surro..
in an hypnotic drug captodiamine c21h29ns2 the the sulfur 359.6 gmole was converted to sulfate and determined
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