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How many electrons are transferred in the following oxidation-reduction reaction?
Zn(s) + 2AgNO3(aq) --> 2Ag(s) + Zn(NO3)2(aq)
Magnesium has three naturally occurring isotopes, 24Mg (isotopic mass = 23.9850 amu, abundance 78.99%), 25Mg (isotopic mass = 24.9858 amu, abundance 10.00%), and 26Mg (isotopic mass = 25.9826 amu, abundance 11.01%)
Determine the freezing point (°C) of a 0.015 molal aqueous solution of MgSO4. Assume i = 2.0 for MgSO4. The molal freezing-point-depression constant of water is 1.86 °C/m..
Correlation of structure with the melting point - What structural aspect of these 18-carbon fatty acids can be correlated with the melting point?
Compute the pH if NaOH solution of the 10.00 mL has been mixed. pKa of HCOOH = 3.74
A solution is prepared by mixing 87.0 mL of 5.00 M HCl and 36.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
what is the correct electron configuration for Cr (chromium). Chose the proper Lewis dot structure for the compound or poliatomic ion: Sulfur Dioxide (SO2).
Consider a stoppered flask containing benzene, iodine, and air, which has reached equilibrium at 298K. Which one of the following statements concerning the system at equilibrium is true?
If a solution is made by mixing 20.0 mL 0.3 M NaCH3COO with 30 mL 0.4 M CH3COOH, calculate the pH of the solution? For acetic acid, K = 1.76 x 10-5.
What is the pressure in millimeters of mercury of 0.0110 mol of helium gas with a volume of 208 mL at a temperature of 35 degrees C?
A 350 mL air sample collected at 35 degrees C has a pressure of 550. mmHg. What pressure will the air exert if it is allowed to expand to 425 mL at 57 degrees C?
The air track carts in the figure are sliding to the right at 1.0 meter per second. Find the speed of the carts.
Consider an area-source box model for air pollution above a peninsula of land. the length of the box is 15 km, its width is 80 km, and a radiation inversion restricts mixing to 15 m.
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