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How will understanding the stoichometry of a chemical reaction affect your determination of a rate law?
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.077 M in NaClO?
determine the numerical values for them the subscript hot, cold, and total stands for the hot brick, the cold brick and the sum of the two.
What mass of solid sodium formate (of MW 68.01)must be added to 115 mL of 0.57 mol/L formic acid (HCOOH) to make a buffer solution having a pH of 4.16? Ka = 0.00018 for HCOOH.
What sign. info about atomic structure came from the Millikan experiment using charged oil drops
Radium-226 (atomic mass = 226.025402 amu) decays to radon-224 (a radioactive gas) with a half-life of 1.6x10^3 years. What volume of radon gas (at 25 C and 1 atm) is produced by 22 grams of radium in 4.5 days.
if the aluminum block is initially at 25 what is the final temperature of the block after the evaporation of the
a mixture of caco3 and cao weighing 0.630 g was heated to produce gaseous co2. after heating the remaining solid
Calculate the number of moles of copper oxidized and moles of electrons that passed through the cell. Calculate the total charge (coulombs) that passed through the cell.
A constant electric current flows for 3.75 h through two electrolytic cells connected in series. One contains a solution of AgNO3 and the second a solution of CuCl2. During this time 1.50 g of silver are deposited in the first cell.
500cm3 of 0.250M of Na2SO4 is added to an aqueous solution of 15.0g of BaCl2 resulting in a white precipitate of insoluble BaSO4.
Calculate the partial pressure of each gas if the composition of the air is: a) 21% oxygen, 78% nitrogen, .3% carbon dioxide
A quantity of N2 occupies 62.2 L at a partic- ular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
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