The net ionic equation for the reaction, Zn (s) + 2 HNO3 (aq) –>  H2(g)  + Zn(NO3)2 (aq)

A chemist prepares an aqueous solution of sodium hydroxide.  The solution contains g of NaOH and has a volume of 400.0 mL.  What is the molarity of this solution?     *Answer should have 3 places after the decimal. 

True or False: Electronegativity of an atom decreases across periodic table. 

True or False: In ionic bonds, electrons are transferred

Zinc metal reacts with aqueous hydrochloric acid to produce zinc chloride and hydrogen gas.  Zn (s) + 2 HCl (aq) –>  ZnCl2 (aq)  +  H2 (g)   What volume(L) of 3.55 M HCl is required to produce 25.5 L of hydrogen gas at a temperature of 298 K and a pressure of 1.20 atm?    *answer must be in correct significant digits, standard notation, and contain the proper unit. 

Consider a society with incomes $15, $25, and $50. The government can redistribute $10 from the riches to the poorest. Which social welfare function would support this redistribution the most?

Firms practice price discrimination primarily to increase total welfare in the economy.

Which of the following best explains why an individual labor supply curve might bend backward at higher wages?

Rust forming is a _______type of reaction   *Answer should be in all lowercase

NextGen Tech and ValueByte are two online retailers that sell refurbished laptops. NextGen Tech specializes in high-quality refurbished laptops, which customers value at $950. It costs NextGen Tech about $600 to purchase, refurbish, and sell each unit. ValueByte, on the other hand, sells lower-quality refurbished laptops. Customers value these lower-quality devices at only $450, and it costs ValueByte just $300 per unit to refurbish and sell. Customers cannot initially tell which seller offers better-quality products. As a result, they believe there’s a 35% chance of receiving a high-quality laptop from either seller. To signal its quality, the manager at NextGen Tech considers offering a warranty lasting t months. The expected cost of such a warranty is $15 per month for NextGen Tech. However, due to more frequent breakdowns and customer complaints, the same warranty would cost $35 per month for ValueByte to offer. What is the minimum number of months (t) of warranty that NextGen Tech would need to offer so that ValueByte would not find it profitable to mimic the offer?