Which two of the following electron configurations represent elements that would have similar chemical properties? (1) 1s22s22p4       (2) 1s22s22p5       (3) 4s23d5       (4) 4s23d104p5  

The combustion of 0.374 kg of methane CH4 in the presence of excess oxygen produces 0.983 kg of carbon dioxide. What is the percent yield?

What is the percent yield of a reaction if the product recovered is 21.2 g and the theoretical yield is 28.4 g? (

What precipitate forms when mixing copper(II) sulfate and sodium sulfate?

What is the oxidation number of free elements?

Which protein makes up the thick filaments? 

What is the oxidation number of Mn in a permanganate anion?

Which is the correct balanced reaction for the combustion of octane C8H18 ?

The correct electron-dot structure for HCN shows:

Bonus Essay 1: 10 points Describe a work using trompe l’oeil from the key works from chapters 1-5. For credit, please… name the work name the artist give the media, and explain in detail what the artist communicated through the form of his or her artwork (2 points).   Minimum word requirement: 150 words Five valid points must be made to receive full credit.  Do not repeat the questions in your response. Feel free to go as long as you need to convey your point. Please use correct grammar, full sentences, and refrain from ALL CAPS or text language.  Grammar will count 20% of all written assignments.