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1. Which of the following statements concerning the carbon dioxide molecule is correct?
a) The molecule contains two sigma bonds
b) the carbon is described by sp2 hybridization
c) the molecule contains four pi bonds
d) Each oxygen is described by sp3 hybridization
2. According to the principles of VSEPR applied on ICI5, which of the following is incorrect?
a) electron pair geometry=octahedral
b) hybridization=sp3d
c)one lone pair and 5 bonding pairs
d) molecular geometry=square pyramid
Calculate the molar concentration of a solution if the absorbance (A) is 0.355, the molar absortivity (a) is 4.29 x10 to the neg 4 L/mol*cm and the path length (b) is 3.00 cm
Complete the table for aqueous solutions of caffeine C8H10O2N4. a. given: mole fraction solven:0.900 find molality, mass percent solvent, Ppm solute b. given: Ppm solute:1269 find molality, mass percent solvent,
How many moles of oxygen atoms are combined with 4.20 moles of chlorine atoms in Cl2O7?
Suppose y was measured five times and average of these five measurements was 3.75. What is the uncertainty in x based on these five measurements?
What is the pressure in millimeters of mercury of 0.0100 mol of helium gas with a volume of 211 mL at a temperature of 50^circ C?
The rate at which a metal alloy oxidizes in an oxygen containing atmoshphere is a type of the Arrhenius equation (rate(k)=Ce^(-Q/RT)). For example, the rate og oxidation of a magnesium alloy is represented by a rate constant k.
Assuming the gasoline is pure octane (C8H18), how many liters of CO2 at STP will be produced from the combustion of 1.00 liter of gasoline. (assume the density of gasoline is 0.963 g/ mL).
What is the enthalpy of vaporization of acetone (CH3COCH3) at its normal boiling point of 56.2?C? The entropy of vaporization of acetone is 88.3 J/K·mol,Answer in units of kJ/mol
The following processes occur in an internal combustion engine. For which one is the entropy change negative
On the basis of the solubility rules, write a balanced molecular equation for the precipitation reactions that take place when the following aqueous solutions are mixed. If no precipitation reaction is likely for the reactants given
How many grams of cobalt metal will be deposited when a solution of cobalt(II) chloride is electrolyzed with a current of 10. amperes for 109 mintues?
Show the condensation of two glucose molecules to form a disaccharide with an alpha linkage; with a beta linkage.
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