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Question: Gastric acid is a digestive fluid that is made with the help of parietal cells in the stomach lining. The parietal cell plasma membrane maintains a concentration gradient of potassium ions between the cell cytoplasm and the extracellular fluid. During the formation of gastric acid, potassium moves down this gradient, passing from the cytoplasm into the extracellular space. Briefly describe how potassium ions move across the plasma membrane of a parietal cell during gastric acid formation.
Problem- How many degrees of temperature rise will occur when a 25.0 g block of aluminum absorbs 6.75 kJ of heat. The specific heat of Al is 0.900 J/g*C
2SO2(g) + O2(g) 2SO3(g) Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished.
When a 3.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 2.472 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCl in kJ/mol
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90
0.101 M HNO2 solution contains 0.0067 M H+ ions at 25 oC. What is the percent ionization of this acid under these conditions
What is the volume of the balloon?
Express the concentration of a 0.0790 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
Question- A buffer of acetic acid/acetate is prepared by dissolving 3.50 g of sodium acetate in 200.0 ml of .150 M acetic acid. What is the pH of the buffer solution
The pH of a 0.10 M nicotinic acid solution is 2.93. What is the approximate value of Ka for nicotinic acid, HC6H4NO2? Assume small percent dissociation
a) Write the word equation for the formation of ethyl propanoate
Choose the answer in which the oxides are arranged in order of increasing acidity (least acidic compound listed first).
When 0.490 kJ of heat is added to the gas, it expands and does 211 J of work on the surroundings. What is the value of delta H and delta E for this process?
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