Consider three halogen elements, at 20 ̊C: given that the density of 17Cl (in period 3) is 1.56 g/mL and that of 53I (in period 5) is 4.97 g/mL, predict the density of 35Br (in period 4).  

You are looking to buy a car. You can afford $300 in monthly payments for five years. In addition to the loan, you can make a $5,000 down payment. If interest rates are 4 percent APR, what price of car can you afford? Round your answer to the nearest dollar.  

A student adds 0.1 mol of oxalic acid and 0.1 mol of sodium dihydrogen phosphate to enough water to make 1.0 L of solution. The following equilibrium is established with the concentrations of the products greater than the concentrations of the reactants. Which of the statements about the equilibrium system is correct? H2C2O4(aq) + H2PO4(aq)  HC2O4(aq) + H3PO4(aq)  

A parent might attempt to resolve a transfer of ownership by giving children active in the firm’s management _____ stock and giving nonactive children _____ stock.

Joey owes $5,000 on a credit card.  The credit card charges 14% per year (compounded monthly).  If Joey pays $100 per month on the credit card, how long will it take him to pay off the credit card?   Provide the answer from your calculator or excel rounded to two decimal places (do not round to a whole number).

What type of energy sublevel is being filled by the elements in Groups III A / 13 through VIII A /18?

How many photons of light are emitted when an electron in a hydrogen atom drops from level 4 to level 1?

Valence electrons are:

Element X has two natural isotopes:  X-63 (62.930 amu) and X-65 (64.928 amu).  Calculate the atomic mass of the element X given the abundance of X-63 is 69.09%.

Which one of the following is the best representation of the titration curve that will be obtained in the titration of a weak acid (0.10 mol L–1) with a strong base of the same concentration?