Consider the reaction: 2A(s) + B2(g) → 2AB(g)                  ΔH°rxn= +225 kJ/mol What would be the enthalpy of the reaction ΔH°rxn  for the reaction: 2AB(g) → 2A(s) + B2(g) ?   Enter the numerical answer with the correct number of significant figures/decimal places, and a space before entering the correct unit properly abbreviated. Indicate at the start using symbols if it is + (positive) or – (negative) For example: -44.1 kJ/mol

Balance the following equations: Cr(s) + Cl2(g) —> CrCl3(s) SO3(g) —> SO2(g) + O2(g) NaOH  +    H2SO4   —>  Na2SO4    +   H2O

A Deaf consumer directly tells you that your pacing is too fast. This is:

Analyzing possible DCS demands before an assignment is an example of:

If you have 2.0 g of iron (specific heat for iron is 0.450 J/g oC) and 2.0 g gold (specific heat for gold is 0.128 J/goC). Which of the two metals would have a higher temperature when heated on the same hot plate at the same length of time? Explain briefly your answer.  

Consider the volatile organic solvent benzene (C6H6) with a boiling point of about 80°C. Why is this not surprising compared to water ? Explain (max of two to three sentences). 

Please click on the link below to access the practice. Once you open the quiz, please complete the quiz on paper showing all of your work. Put question 1 on one side of the paper and question 2 on the other side of the paper. Once you are finished with the quiz you will have 10 minutes to upload your work to Moodle. Please make sure that you take a good picture of both pages and upload the pdf (1 document, 2 pages) to Moodle. @@PLUGINFILE@@/Practice%20Test.pdf?time=1760466473591

The data set below represents the amount of money earned annually by eight college student.  Use the data set to calculate the mean (4 points), the median (4 points) and the mode (4 points). Data Set:  5,000    ,    8,000    ,    3,000    ,    10,000    ,    18,000    ,    22,000    ,    100,000    ,    8,000 Write the formula and show your work for calculating the mean and median.  Identify the mode (if there is a mode).

What is the price you just paid for this bond? 

What will be the price of the bond when you sell it at the end of year four?