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In a 0.34 M solution of sodium acetate, what concentration of hydronium ions comes from the self-ionization of water? pKb for acetate anion is 9.246
Indicate the solubility of the following solutes in 100 g of water
calculate the density of the pheromone in grams per liter in a cylindrical air space with a radius of 0.50 mi and a height of 40ft.
A voltaic cell is based on the reaction Sn(s)+ I2 (s) --> Sn^2+ (aq)+ 2I^- (aq). Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 70.0 g of Sn is consumed?
Consider a steel tank whose volume is 65.0 and which contains gas at a pressure of 16500 at 21.What mass of does the tank contain?
In the 1980s, there was an international agreement to destroy all stockpiles of mustard gas, ClCH2CH2SCH2CH2Cl. When this substance contacts the moisture in eyes, nasal passages, and skin
What is the pH of the buffer after the addition of 0.02 mol of NaOH? C)What is the pH of the buffer after the addition of 0.02 mol of HI? Express Numerically
A student measures out 100.0 ml of 1.00 M HCl and places it in a styrofoam cup. The temperature of the HCl is 22.30C. She then addes 1.002 g of MgO to the cup.
Amount of H2O2 in 15.8 g of hair bleach was obtained by titration with a standard KMnO4 soln.
A scientist wants to make a solution of tribasic sodium phosphate, Na3Po4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 425 mL of a solution
Ethanethiol (C2H6S) is a compound with a disagreeable odor that can be used to impart an odor to natural gas. When ethanethiol is burned, the sulfur reacts with oxygen to form SO2
How many cubic centimeters of an ore containing only 0.22% gold (by mass) must be processed to obtain $100 worth of gold.
If solar radiation is 1200 W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation. A green leaf has a surface area of 2.15 cm^2.
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