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Draw the Lewis structures for the following compounds. 1) PBr3 Using VSEPR, what is the shape about the P. 2) N2H2 3) CH3OH Using VSEPR, what is the shape about the C and about the O? 4) CO2 Using VSEPR, what is the shape about the C? 5) C2H4
Europium crystallizes in a body-centered cubic lattice (the Eu atoms occupy only the lattice points).The density of Eu is 5.26 g/cm3. Calculate the unit cell edge length in pm.
A machine does 300.0 kJ of work on the environment, and emits 200.0 kJ of heat. What is the change in internal energy of the machine?
7.65.50 mL of 0.161 M HF is titrated with 0.1200 M NaOH. What is the pH after 65.50 mL of base have been added? (Ka for HF is 6.8 x 10-4)
what mass of stomach acid will neturalise an antacid tablet containing 0.1g of magnesium hydrogen carbonate
Write the structures for the major monobromination products that would be formed from each of the following substrates used. Explain your predictions.
Iron crystallizes in a body-centered cubic structure. The volume of one Fe atom is approximately 8.37 10-24 cm3, and the density of Fe is 7.874 g/cm3. Calculate an approximate value for Avogadro's number.
For the reaction CH4+202=2H2O+CO2, calculate the percent yield of carbon dioxide if 1000. g of methane react with excess oxygen to produce 2300. g of carbon dioxide.
Why is this important and if this step was not done, how could this change your results (in other words what specifically would happen to the Ksp value?
The velocity of the electron ground state hydrogen atom is 2.2x10^6 m/s. What is the wavelength of this electron in m
Benzene and biphenyl are typical by-produdcts of these grignard reactions. Give mechanisms for their formation. IR would not be of much use in differentiating these two byproducts
A mixture of CS2(g) and excess O2(g) is placed in a 1.00 L reaction vessel at 100.0 degrees celcius and a pressure of 3.00 atm. A spark causesthe CS2 to ignite
Consider the reaction, 2 D(g) + 3 E(g) + F(g) => 2 G(g) + H(g) When [F] is decreasing at 0.60 mol/Ls, how quickly is [G] increasing
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