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What is the name of the special provision in the Voting Rights Act (1965) that required jurisdictions with histories of race-based voter suppression to gain federal approval before making any changes affecting voting?

In the audit study “Are Emily and Greg More Employable than Lakisha and Jamal?” the researchers found that:

According to Bentele and O’Brien’s article about restrictive voter access policies, most legislative efforts to restrict voting between 2006 and 2011 were occurring:

The temperature rises from 25.00 °C to 29.00 °C when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. Calculate ΔErxn in kJ/mol for the combustion of sucrose. The heat capacity of the calorimeter is 4.90 kJ/°C. The molar mass of sucrose  is 342.3 g/mol

Which of the following could be the quantum numbers (n, l, ml, ms) for the last electron filled for lithium in its ground-state configuration?

A mercury barometer shows a height of 20 inches of mercury.  What is this pressure expressed in units of atm?

Arrange these ions in order of increasing radius: Cs+ , Ba2 + , I−     

Which of the following elements is likely to have the largest second ionization energy? 

A 5.0 g piece of aluminum and a 10.0 g piece of iron are both heated to 100.0°C then dropped into 100. g of water at 23.7°C. What is the final temperature of the water after it has come to thermal equilibrium? specific heat capacity of iron = 0.45 J/g°C, aluminum = 0.90 J/g°C, and water= 4.184 J/g°C

Which of the following signs of q and w represent a process where the surroundings are doing work on the system, as well as the system losing heat to the surroundings?