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Imagine a 10 g block of aluminum (_ = 2.7 g/cm3) and a 10 g block of iron (_ = 7.9 g/cm3). Which of the following is true?
A) The block of iron is smaller than the block of aluminum.
B) Both objects have the same volume.
C) The block of iron is more massive than the block of aluminum.
D) The block of aluminum is smaller than the block of iron.
An antacid tablet containing magnesium hydroxide as an active ingredient requires 22.6 mL of 0.597 M HCl for complete neutralization. What mass of Mg(OH)2 did the tablet contain?
Draw the exo and end product for the reaction of cyclopenadiene and malice anhydride
The rate constant k for a first order reaction is 1.36 * 10 -3 s -1 at 90 degrees Celcius and the activation energy is 78.4 kJ/mol. What is the rate constant for this reaction at 50 degrees Celcius?
Calculate the number of moles of ions present in 66.8 g of a solution that is 2.11% Fe(NO3)3 by mass.
To an open beaker containing 500ml of water at 298k, 20g of sodium metal is added. the reaction proceeds quite rigorously but ultimately comes to rest after consuming all of the sodium metal and thermally reequilibrating with the surroundings. The..
Determine the intermolecular distances for the two molecules and account for their similarity or difference.
reaction flask and allowedd to come to equilibrium at 250 C: PCL5--> PCl3 +Cl2 if the amount og chlorine in the equilibrium mixture is 0.470mol, calculate (a) the euilibrium concentration of each gas, (b) Kc, (c) the fraction of PCl5 dissociated.
Consider 20.0 moles of CO2 in a 1.0 liter container at 300.0 K. What is the pressure predicted by the van der Waals equation.
MnO4-(aq) I-(aq)?Mn2 (aq) I2(s), the number of electrons gained in cathode is ( )
How does the system in equilibirium seem to respond to the changes applied to it with respect to the distribution of iodine?
Asumming equal concentrations of conjugate base and acid, which one of the following mixtures is suitable for making a buffer solution with an optimum ph
A metal rod has a mass of 17.62 g. A graduated cylinder contains 28.9 mL of water. The metal rod is added to the cylinder. The final water level in the cylinder is 35.1 mL. What is the density of the metal rod?
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