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A student determines the mass of a bone to be 23.3751g. A 50 mL graduated cylinder contains 30.3 mL of water. When the bone is placed in the water-filled cylinder, the eater level rised to 42.6 mL. What is the density of the bone.
the frequency factor a is 8.7x 10 12 s- and the activation energy is 63 kj/mol, What is the rate constant for the reaction at 75C
Tris is widely used in a biochemical laboratory. Its acid dissociation constant is 8.32 x 10^-9. You have available at your lab bench a 0.1 M solution of Tris in its protonated form, 0.1 M solution of HCL and NaOH,
One of the emission spectral lines for Be3+ has a wavelength of 253.4 nm for an electronic transmission that begins in the state with n = 5.
Given Data; P4+6Cl2=4PCl3 change temp= -2439 kj ,4PCl5=P4+10Cl2 change temp= 3438 kj calculate change in temp for the reaction PCl5=PCl3+Cl2.
A sample of gas with an initial volume of 27.6L at a pressure of 735 mmHg and a temperature of 309 K is compressed to a volume of 15.8 L and warmed to a temperature of 374 K.
A 49 gram sample of impure potassium nitrate (KNO3) was heated to complete decomposition according to the equation 2 KNO3(s) → 2 KNO2(s) + O2(g) After the reaction was complete.
Zinc is extracted from its ore by heating with carbon in the blast furnace. How much zinc oxide do you need to make 130 g of zinc?
Reaction of p-aminophenol with acetic anhydride to produce acetylaminophenol, In an experiment, acetylaminophenol is produced from the reaction of p-aminophenol with acetic anhydride.
If 72.4 kJ of heat is supplied to a 842 g block of metal, the temperature of the metal increases by 9.0°C. Calculate the specific heat capacity of the metal in J/g·°C.
If the initial concentration of AB is 0.260 M, and the reaction mixture initially contains no products, what are the concentrations of A and B after 80 s?
When 3.8 L of propane gas is completely combusted to form water vapor and carbon dioxide at 350°C and 0.936 atm, what mass of water vapor results?
A bicycle tire is filled with air to a pressure of 611 kPa at a temperature of 19 degrees C. Riding the bike on a hot day increases the temperature of the tire to 58 degrees C.
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