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how to draw the Lewis Structure for this. The complete questions says: "Lithium aluminum hydride, LiAlH4, contains both ionic and covalent bonds. Draw the Lewis structure of this compound." From calculating the valence electrons
what accounts for the large amount of ring strain in cyclopropane and cyclobutane? (Hint: what bond angle does an sp^y hybridized carbon prefer? What angles are necessary for each of the geometric shapes you are building?)
The vapor pressure of water is 439 mm Hg at 358 K, and the enthalpy of vaporization is 40.7 kj/mol.
the heat capacity of the calorimeter has been determined to be 24.0J/degreeC. if the temperature of the system increases by 6.0C what is the heat generated(qrxn) by the reaction?
Determine the final concentration if A 134 ml portion of that solution is diluted using 147 ml of H 2 O?
the urge to breathe is increased and excessive CO2 is removed from the body D. respiratory tissue is damaged by oxidation E. no problems result from this situation
A solution of glyceraldehyde, C3H6O3, has a density of 1.15 g/mL, and a mass percentage of 28.1% glyceraldhyde at 25 deg C. (molar mass = 90.078g/mol)
The metal used to make the US nickel coin is an alloy of 75% copper and 25% nickel. What maximum mass of alloy could be produced if only 450 kg of nickel and 1180 kg of copper were on hand?
Sodium carbonate (Na_2CO_3) is used to neutralize the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 6.05×10^3 kg of sulfuric acid solution?
If the temperature in the chamber is 103 °C after the charge is ignited, what is the pressure, in atmospheres, behind the cannonball when the gunpowder goes off?
Write an expression for the quantity 506000 cm in which it is clear that all the zeros are significant.
Calculate the vapor pressure lowering of a solution of 2.40 g of aspirin (molecular weight = 180.15 g/mol) in 55.0 g of methanol (CH3OH) at 21.2°C
What is the wavelength of light having a frequency of 5.4 x 10^13 Hz? What is the frequency (in Hz) oflight having a wavelength of 8.26 x10^2 nm?
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