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Make out all potentially hazardous steps in the procedure of the activation energy experiment. Define what safety precautions should be taken and why.
A second 50ml aliquot was brought to a pH of 10 with an HCN/NaCN buffer, which also served to mask Cd2+; 11.56 ml of EDTA solution were needed to titrate the Pb2+. Calculate the percentage of Pb and Cd in the sample.
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution.
The dipole moment of SO2 and CO2 are 5.37x10-30 C.m and zero, respectively. What can be said about the shapes of the two molecules.
What is the rate of the above reaction? What is the closest numerical value of K for the above reaction? What are the units for the rate constant for the reaction?
use the cahn-ingold-prelog sequence rules to differentiate between e- epposite and z- zame zide olefins. differentiate
determine the pressure in a 125-L tank containing 56.2 kg of oxygen gas at 21.0 oC
According to the following reaction, how many moles of ammonium nitrate are necessary to form 0.625 moles water
in covalent molecules some valence electrons are shared and others are not. what are these types of electrons called?
Ionization energy is the energy needed to eject an electron from an atom. Compute the ionization energy of a hydrogen atom in its first excited stat (n=2)
There are 96 grams in a molecule of (NH4)2CO3. Explain how many grams would there be if you had 5.4X10^24 molecules of this substance
Describe briefly four types of batteries. In your description, include the redox reactions
When a compound X, which contains only S, C, and H is burned, one volume of X yields 1 volume of sulfur dioxide, 3 volumes of carbon dioxide and 4 volumes of steam (all volumes measured at the same temperature and pressure). What is the formula of..
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