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Question:
Can you tell if a substance in your home contains coniine? When I touch it I get tingly and numb and it smells like an old attic.
I am currently under a Dr care and waiting for cholinesterase levels to come back from the lab.
Also found a strange herb in the house that resembles hemlock. Local extension service sent it off for testing
Briefly explicate why the concentrations of HC2H3O2 and C2H3O2- ion change when you add 0.10M HCl solution to the HC2H3O2-NaC2H3O2 buffer solution. State an appropriate chemical equation showing the changes that occur.
If you had 6.02 x 10^23 dollars, and could spend it at 1 billion per second for your entire life (75 years), what approximate percentage of your original money would you have left?
The measured boiling point of the solution was 65.46 °C. Calculate the molecular weight of the unknown substance.
After he cleaned up the mess, he looked around the baby's changing table for remedies for this horrible rash, but he could not find anything. As he was about to panic, he remembered some useful acid-base chemistry from a class years ago. He opened..
Presume complete dissociation of the solute, Explain how many grams of KNO3 must be added to 275mL of water to produce a solution that freezes at -14.5. The freezing point for pure water is 0.0 and Kf is equal to 1.86
carbonic acid solution with [H_2CO_3] = 0.00735 M is titrated with 0.100 M KOH. Determine the pH of the solution when 70.00mL of OH have been added.
The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?
A 2.50 g sample containing As2O5, NA2HAsO3, and other materials is dissolved and neutralized. The As(III) is fully titrated by (oxidized by) 11.3 mL of 0.150M I2. All the arsenic present is now in the +5 state. Excess KI is added.
What mass of K2CO3 is needed to prepare 200 mL solution of a solution having a potassium ion concentration of 0.150 M
A solution is made by dissolving 5.00 g of iodine in 100 mL of methanol (density = 0.791 g/mL) to form a solution. What is the mass percent solute in the solution.
What is the enthalpy change (in kJ) of a chemical reaction that raises the temperature of 250.0 ml of solution having a density of 1.25 g/ml by 1.60°C
a mixture of ch4 and h2o is passed over a nickel catalyst at 1000 k. the emerging gas is collected in a 5.00 l flask
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