Author: Anonymous

Use the equations below to solve the following gas law problem.  P1V1T2 = P2V2T1                          1 atm = 760 mm Hg = 760 torr A sample of gas collected at 21.0°C and 0.868 atm, has a volume of 1.83 liters.  What volume will the gas occupy if the temperature is increased to 38.0°C and the pressure is reduced to 0.658 atm? To receive full credit:  You must use the math equation editor in the tool bar to insert the final gas law equation (with numbers and units) that you used to solve the problem.  Be sure to include the answer. Or, show your work on a separate sheet of paper and submit in the Unit 2 Exam pictures dropbox after completing the Exam. 

Which of the following choices best classifies the following reaction:  H2CO3  H2O  +  CO2a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

Which of the following choices best classifies the following reaction:  Mg   +    2 HBr     MgBr2   +  H2 a. combination b. single replacement c. decomposition d. double replacement  e. redox f.  nonredox

Which of the following electronic changes will cause a Group VA (15) nonmetal to achieve a noble gas configuration?

According to the chemical naming system, which name is incorrect? Formula:                 Name: SnCl4               tin chloride SCl2                       sulfur dichloride Mg(NO3)2        magnesium nitrate Na2(CO3)         sodium carbonate FeBr2               iron (II) bromide  

Which of the following would cause a potassium atom to achieve a noble gas configuration?

Increasing the pressure of a fixed amount of gas at constant temperature has what effect on the volume of the gas? (Response should be one of the following: increases, decreases or no effect)

Explain why gases have such low densities in comparison to solids or liquids.

Which element is oxidized in the following reaction? 2 NaBr  +   Cl2   →  2 NaCl   +  Br2

The correct formula of an ionic compound containing Fe+3 and (ClO4)-1 is