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Which of the following is considered a model for enzyme action?
A. Lock and Key model B. Enzyme interaction model C. Transformation model D. Transcription model
Determine the pH of a 0.0034 M HNO3 solution. I don't know what to do. My teacher is out and our student teacher is not teaching as well as he should be.
Problem- If 4.36 moles of an ideal gas has a pressure of 2.80 atm, and a volume of 61.27 L, what is the temperature of the sample in degrees Celsius
Aspirin (C9H8O4) is produced from Salicylic acid (C7H6O3) and Acetic anhydride (C4H6O3): C7H6O3 + C4H6O3 ----> C9H8O4 + HC2H3O2 a) How much salicylic acid is required to produce 1.5 X 10^2, assuming that all o the Salicylic acid is converted to as..
After the resulting reaction was complete, back titration required 10.40 mL of 0.1212 M NaOH. Assuming that the tablet contained only calcium carbonate and an inert binder calculate the mass of calcium carbonate and mass percent of calcium carbona..
What is the atomic weight of an element if 4.00 grams of it contain 2.98 x 10^22 atoms. A) 2.02 u B) 80.8 u C) 8.08 u D) 20.2 u E) 19.7 u
What is the volume in mL of 0.845 M NaOH(aq) needed to reach the equivalence (stoichiometric) point in the titration
Four materials (A, B, C, D) have approximately equal melting points. All possible combinations of two of the four solids were prepared by combining equal amounts of each solid.
Determine the molarity of a salt solution of 150g of NaCl in 540g of water. Assume the density of water is 1.0g/mL. (MWNaCl = 58.44 g/mol)
If the wavelength ( ) of a light wave is 5.0 x 10^-6 meter, calculate its frequency (V). Use c = ?V width c = 3.0 x 10^8 m/sec. What are the units of V
40.0L of H2 at 850mmHg and 75.5 degrees celsius is reacted with an excess of I2. What mass of HI is formed? H2(g) + I2(g)--> 2HI(g)
A 5.00-mL sample of a sulfuric acid solution of unknown concentration is titrated with a 0.1401 M Sodium Hydroxide solution. A volume of 5.99 mL of the base was required to reach the endpoint. What is the concentration of the unknown acid solution
what volume of carbone dioxide ,measured at STP,would result from the reaction of 9.786 kg of oxygen with excess pentane
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