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Problem- A 25 mg brass sample was placed in a 25 mg flask meassured at 35% use your graph to determine mass percent
I am in rush anybody is there to provide me the answer in quick phase
Then add 10 g of water that has been heated to 100 degrees C and seal the calorimeter. If the equilibrium temp is 43.54 degrees C, what is the heat capacity of the calorimeter? (Heat capacity of water is 4.185 J/g degrees C).
You intend to monitor the diffusion using a camera that is capable of one image every 60 s. Is this imaging rate of the camera sufficent to detect the diffusion of a single lysozyne protein over a length of 1μm
Hydrazine derivatives are commonly used in rocket fuels. Combustion of N2H4 produces N2(g) and H2O(g). When 1.00 g of N2H4 is burned in a bomb, DT = 3.51 oC. If C = 5.51 kJoC-1, what is the quantity of heat evolved? What is DH of this reaction?
The heat of vaporization of water is 40.66 kJ/ mol. Explain how much heat is absorbed when 2.46 g of water boils at atmospheric pressure
Upon combustion, a mole of hydrocarbon formed eight moles of CO2 and eight moles of H2O. Determine the molecular formula of the hydrocarbon and give the blanced combustion reaction.
A carbon-hydrogen-oxygen containing compound yields 1.029 g CO2 and 0.198 g H2O in a combustion analysis( note that this means O2 was added the overall reaction) what is the empirical formula? if the Molar mass is 138.16 what is the molecular form..
Calculate the final temperature when a 20.4 gram sample of ice at 0oC is placed into a styrofoam cup containing 111 grams of water at 72.7 oC. Assume that there is no loss or gain of heat from the surroundings.
assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts heat capacity(s) 37.7 jmolk
Gaseous ammonia (NH3, 2.00 L, 703.8 torr, 23.8C) reacts with aqueous sulfuric acid (H2SO4, 0.500M, 175mL) to produce solid ammonium sulfate. 4.8275 g of product is isolated.
element z has two isotopes: one has mass number of 19.0 amu is 55.0% abundant,and the isotope with mass number 21.0 amu is 45.0% abundant. what is the average atomic mass for element Z?
briefly describe how the atomic radii and ionization energies of group 1a1 elements compare with those of group 8a18.
When acid is added to methyl orange the proton attaches to the molecule. Utilizing electron pushing arrows, illustrate how a resonance structure could be drawn that places the positive charge on the N,N-dimethyl nitrogen of the product.
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