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A 55- yr woman orders a cheese and bacon pizza and has 3 large glasses of cola (ph value 3) . On the way home she experiences heartburn and abdominal pain and has difficulty breathing. She drinks a lot of water and has consume milk of magnesia(ph value 10.5) before she feels comfortable again. State the pH values of water and blood and whether its acidic or alkaline.
Calculate the amount of heat liberated (in kJ) from 375 g of mercury when it cools from 89.2°C to 15.7°C
The 1H-NMR spectrum of compound A, C5H10O, consists of the following signals: ? 9.72 (triplet, 1H), 2.40 (quartet, 2H), 1.58 (quintet, 2H), 1.31
Calculate the pH of a solution containing 25.00 mL of 0.12M formic acid (Ka=1.7x10^-4) to which the following amounts of 0.10M NaOH have been added:
a 45-g piece of ice at 0 degrees C is added to a sample of water at 9 degrees C. All of the ice melts and the temperature of the water decreases to 0 degrees C. How many gram sof water were in the sample?
Carbon dioxide is eliminated from pyruvate ions by a decarboxylase enzyme through the following first order reaction Pyruvate(l) goes to CO2(g) + acetaldehyde(l)
Write down a lewis structure for SbCl5 and also explain Does the the octet rule is obeyed by this molecule Explain how many grams would 3.01 * x10 23 atoms of tellurium have?
what practical and creative decision must a scientist make? What important criteria must this choice fulfill?
What will be the molarity of a compound (1 litre) with a molecular weight of 169 and purity as 41%.
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
To determine the volume of a gas using ideal gas law and evaluate the number of moles of a gas using ideal gas law.
If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell
What is the activation energy for a reaction if its rate constant is found to triple when the temperature is raised
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