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Arrange the following elements in order of INCREASING atomic size AND explain how you know the order
Ca, Rb, S, Si, Ge, F
Write the chemical equation for the following reaction: Add 1mL of 6M HCl to 1mL of 0.5M Na2SO4. Add a few drops of 1M BaCl2. How do your incorporate the BaCl1 into the chemical equation
Rb-87 decays with a half-life of 48.8 billion years to Sr-87. For short periods of time, there are so few decays that the number of changed nuclei is far smaller than the experimental error.
A 140.0-\,mL solution contains 2.00g of sodium benzoate and 2.53g of benzoic acid. Calculate the \rm pH of the solution.
Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
Consider 2 moles of a onoatomic ideal gas (Cv,m=3R/2) at an initial pressure of 2.0 atm and an initial temperature of 298 K. Assume it expands adiabatically and reversibly until its volume doubles. calculate the expansion ork, the final tmperature..
Mixing cyclohexanol with phosphoric acid is an exothermic process, whereas the production of cyclohexene is endothermic. Construct an energy diagram showing the course of this reaction.
calculate the number of water molecules that can be prepared from 664 h2 molecules and 664 o2
A coffee-cup calorimeter is calibrated by adding 1840 J of heat to the water in the calorimeter and measuring a 1.72C rise in temperature.
A gas sample containing 1.35 mol at 25°C exerts a pressure of 405 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container?
a nonelectrolyte of 558.9 grams are fully dissolved in sufficient h2o to produce an aqueous solution of 2.50 litres at
describe the difference between what the retina does and what the striate cortex does?
what are the 3 resonance structures of NO3- what is the shape
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