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A cable attached to a block of mass 12 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 5.0 N, what is the coefficient of kinetic friction between the block and the floor?
Determine the percent yield if a student decomposes H 2 O to Form hydrogen (H) and oxygen(O). If the student starts with 34.7 grams of H2O and collects 20.0 grams of oxygen,
Question- Part 1) what is the density of He at STP. why do helium-filled balloons rise in air. Part 2) if 16.0g of O2 and 2.2g CO2 are placed in a 5.00-L container at 21C, what is the pressure of this mixture of gases.
Problem- Place each charge form of alanine under the pH condition where it would be the predominant form. The pKa values for the carboxyl group and amino group of alanine are approximately 2.3 and 9.7, respectively.
Suppose that 180 g of ethanol at 26 ? C is mixed with 225 g of ethanol at 83 ? C at constant atmospheric pressure in a thermally insulated vessel.
Which of these bases is the strongest one which can be used in aq solution and retain its basic character?
A solution containing 82.0 g of ascorbic acid dissolved in 230 g of water has a density of 1.22 g/mL. Calculate the molarity of ascorbic acid in the solution.
Write balanced molecular, total ionic and net ionic equations for the reaction of aqueous copper (II) sulfate and aqueous sodium sulfide. Be sure to include proper phase labels.
To do so she places 100.0g of water at 58.60C into the calorimeter which already contains 100.0g of water at 19.30C. The final temperature of the water in the calorimeter is 38.70C. What is the heat capacity of the calorimeter
When salt is applied to roadways in the winter, is there an experiment using yeast that would help me determine if the salt pollution runoff will negatively affect the streams and soil in my community?
What hybridization is needed to describe the square planar molecular geometry of Krf4? Explain how the hybridization is done.
Calculate how many grams of Copper II carbonate are obtained when 5.2ml of an 3.0M aques solution of sodium carbonate is mixed with 10.0ml of a 5.0M aques solution of Copper II Nitrate.
A tank of oxygen holds 28.0 L of oxygen (O2) at a pressure of 16.0 atm . When the gas is released, it provides 310. L of oxygen. What is the pressure of this same gas at a volume of 310. L and constant temperature? Express your answer with the app..
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