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1. A student measures the conductivity of an H2CO3 solution and determines it to be a weak electrolyte. The student incorrectly lists the species in solution as H+, CO3-2. Give the correct list of species in the solution.
2. A student measures the conductivity of a C4H10O (diethyl ether) solution and determines it to be a nonelectrolyte. The student incorrectly lists the species in solution as H+, C+4, O-2. Give the correct list of species in the solution.
With what minimum speed must Fran leave the ground in order to lift her center of mass 1.95 m and cross the bar with a speed of 0.70 m/s?
How much heat energy would be needed to raise the temperature of a 15.0 g sample of iron (C = 0.448 J/goC) from 22.0 oC to 100.0 oC?
Metals and nonmetals can react with each other to form ions. Complete these statements. A potassium atom gain or loses(electrons/protons/neutrons)and to form how many ion?
Discuss what you would observe after elution and visualization of a TLC plate having made the following mistakes in carrying out the anaylsis.
Describe the reactant and products of the chemical reaction. Was the reactant (potato chip) completely consumed? What evidence supports your answer?
Draw the radial probability distribution function of a 8f orbital. And may you please explain what a radial probability distribution is and how to draw one for any orbital? Thank you!
A chemist titrates 20.00 mL of 0.2000 M HBrO ( Ka= 2.3 x 10^-9) with .1000 M NaOH. What is the pH? A) Before any base is added? B) When [HBrO] = [ BrO-] C) at the equivalence point
How many grams of sulfur (S) are needed to react completely with 355g of mercury (Hg) to form HgS?
A sample of 1.42 g of Helium and an unweighed quantity of Oxygen are mixed in a flask at room temperature. The partial pressure of Helium is 42.5 torr and of oxygen is 158 torr.
Final temperature after urea dissolves in water, What is the final temperature of the solution in kJ? The density of water is 4.18 J/g·°C. What is the final temperature in °F? F = °C x 1.8 + 32 (Round your answer to one decimal place)
A 125g metal block at a temperature of 93.2 degrees Celsius was immersed in 100g of water at 18.3 degrees celsius. Given the specific heat of metal (s= 0.900j/g x degrees celsius)
Calculate: Solution Density Mass fraction and % (sodium acetate) Mole fraction (sodium acetate) Molarity molality molality of solute particles
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