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A graduated cylinder contains 18.5 of water. What is the new water level after 32.0 of silver metal with a density of 10.5 is submerged in the water?
Aluminum has a face-centered cubic unit cell. If the atomic radius of aluminum is 125 pm, what is the edge length of the unit cell? A) 177 pm B) 354 pm C) 217 pm D) 500 pm E) 250 pm 3.
All of the ice melts and the temperature of the water decreases to 0.0 degrees celsius. How many kilograms of water were in the sample?
You have 100 mL graduated cylinder containing 50 mL of water. you drop a 154 g piece of brass (d= 8.56 g/cm3) into the water. how high does the water rise in the graduated cylinder?
Calculate the number of carbon atoms in 3.8 moles of methane
A mixture of He, Ne and Ar has a total pressure of 0.80 atm and is found to contain 0.55 mol He, 0.94 mol Ne and 0.35 mol Ar. What is the partial pressure (in atm) of each gas?
The molar heat of vaporization of acetic acid, HC2H3O2, is 24.3 kJ mol-1 at its boiling point. How many kilojoules of heat would be liberated by the condensation of 6.52 g of acetic acid?
Calculate the heat of enthalpy for the reaction:
In the experiment of recrystallization of naphthalene,what is the additional step should be added to this procedure to remove impurities insoluble in solvent?
Calculate the amount of energy in kilojoules needed to change 135 of water ice at -10 degrees Celsius to steam at 125 degrees Celsius.
Assuming that "di-lithium" is very stable and the product of the fusion of two 6Li nuclei, the energy released per kilogram of di-lithium formed in the fusion process is closest to?
Aluminum oxide decomposes to produce aluminum metal and oxygen gas. When 9.8g of aluminum oxide decomposes, how many grams of aluminum are produced?
A 30 gram block of an unknown metal at 86.0oC was dropped into an insulated flask containing approximately 40.0 grams of ice and 30.0 grams of water at 0oC.
Use the equation given to solve the following.Na3PO4+3AgNO3=Ag3PO4+3NaNO3.a) how many moles of NaPO4 would be required to react with 3.5 moles of AgNO3. B) How many moles of NaNO3 can be produced from
Write a balanced equation for the reaction of copper with concentrated nitric acid to form copper(II) nitrate. assume that nitric acid is reduced to No2. water is also formed.
For 2 SO2(g) + O2(g) reverse reaction arrow 2 SO3(g), Kp = 3.0 104 at 700 K. In a 2.00-L vessel the equilibrium mixture contains 1.60 g of SO3 and 0.145 g of O2. How many grams of SO2 are in the ve
The average pH of precipitation in rural areas is 6.80. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere.
A mixture of gases with a pressure of 800.0 mm hg contains 60% nitrogne and 40% oxygen by volume. what is the partial pressure of oxygen in this mixture?
Calculate a value for the equilibrium constant for the reaction below. O2(g) + O(g) reverse reaction arrow O3(g).
Consider the constitutional isomers 2-methyl-1-butene, 2-methyl-2-butene, and 3-methyl-1-butene. When each of these alkenes is subjected to catalytic hydrogenation (H2, Pt), a single product result
Calculate the number of kilograms of helium needed to inflate a balloon to a volume of 100,000 L at an atmospheric pressure of 250 mmHg and a temperature of -35 °C.
Hydrogen is produced commercially by the reaction of methane with steam. CH4(g) + H2O(g) CO(g) + 3 H2(g)
The net ionic equation for this reaction. If 18.56 g of copper(II) chloride react, what is the maximum amount of precipitate that could be formed?
The pH of a sample of rain is found to be 3.2. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 i
Calculate the pH of a buffer solution obtained by mixing 400.0 mL of 0.200 M acetic acid solution and 100.0 mL of a 0.300 M sodium hydroxide solution.(The pKa of Acitic Acid, CH3OOH is 4.74)