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From the ratio of the mass of the black product to the initial 5g placed in the flask, could the remaining black compound be the anhydrous copper carbonate hydroxide molecule Cu2CO3(OH)2? The molecular weight of Cu2CO3(OH)2 is 221.116 g/mol, while that of water is 18.015 g/mol. Show your calculations.
How much energy is required to vaporize 48.7 g of dichloromethane (CH2Cl2) at its boiling point, if its ?Hvap is 31.6 kJ/mol?
What mass of sodium chloride would need to be added to the blood to bring the sodium ion concentration up to 0.140 M , assuming no change in blood volume
A 0.465 g sample of an unknown compund occupies 245 ml at 298 K and 1.22 atm. What is the molar mass of the unknown compound?
How many grams of methane must be combusted to heat 1.15 of water from 26.0 to 87.0, assuming as a product and 100% efficiency in heat transfer?
2.00 x102 ml of .744 m hcl is mixed with 2.00 x 102 ml of .372 m baoh2. how many moles of water are produced in the
Volume after mixing is 131mL. Kf=1.86 C/m -- Kb=0.512 C/m Calculate the freezing point and boiling point?
Newton's third law of motion can be stated like this: "For every action, there is an equal and opposite reaction." How are Le Chatelier's Principle and Newton's third law similar? How are they different?
in a .1000 M NaOH solution, 20.76 mL of the NaOH solution were required t neturalize completely 13.15 mL of the malonic acid solution; what is the molarity of the malonic solution?
Calculate the de Broglie wavelength of an neutron moving at 1% the speed of light. Calculate the velocity of a neutron with a wavelength of 75pm.
There are 3 different possible structures (known as isomers) for a dibromoethene molecule, C2H2Br2. One of them has no net dipole moment, but the other two do. Draw a structure for each isomer. Include H atoms.
Determine What would be the total volume in the graduated cylinder if density of Ag= 10.5 g/mL.?
Carbonated cola is more acidic than coffee or even orange juice because cola contains phosphoric acid. What is the molar concentration of {H_3O^+} in a cola that has a pH of 4.240? Express your answer with the appropriate units
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