What is the wavelength of light (nm) that has a frequency 4.62 × 1014 s-1? YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

The electron-domain geometry of the AsF6- ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals

A solution containing 10.0 g of an unknown liquid and 90.0 g water has a freezing point of -3.33 °C. Given Kf= 1.86g/°C for water, the molar mass of the unknown liquid is ______g/mol. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

A nitrogen oxide is 63.65% by mass nitrogen. The molecular formula could be ________. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM 

The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O is ________ M. The density of the solution is 0.79 g/mL. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

Which of the following correctly represents the third ionization of aluminum?

 When the following equation is balanced, the coefficients are ________.                                       Al(NO3)3 + Na2S → Al2S3 + NaNO3

 The temperature of a 15-g sample of lead metal increases from 22 °C to 37 °C upon the addition of 29.0 J of heat. The specific heat capacity of the lead is ________ J/g-K. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

The element X has three naturally occurring isotopes. The masses (amu) and % abundances of the isotopes are given in the table below. The average atomic mass of the element is ________ amu. The answer should be displayed to the correct number of significant figures. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM              

Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2) as shown in the reaction below:             CaC2 (s) + 2H2O (g) → Ca(OH)2 (s) + C2H2 (g)  How many grams of H2O are required to completely react with 82.4 g of CaC2? YOU MUST SHOW YOUR WORK FOR THIS PROBLEM