{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

exam1practice - City College Chemistry Department Chemistry...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
City College, Chemistry Department Chemistry 10301, sections E*, Prof. T. Lazaridis First Midterm exam, Sep 29, 2010 Last Name: _____________________________________________ First Name: _____________________________________________ SSN last 4: ______________________________________________ Note: There are 7 questions in this exam. Fill in your answer in the blank space provided immediately following each question. Half a point will be subtracted every time you report a numerical result with an incorrect number of significant figures. A copy of the periodic table is attached. Good luck! 1. (20) a. (4) What is the name of the compound K 2 SO 4 ? Potassium Sulfate b. (4) Is the above compound ionic or molecular? Ionic c. (4) What is the molar mass of the above compound ? 2*39.10+32.07+4*16.00= 174.27 g/mol d. (4) What is the chemical formula of calcium carbonate? CaCO 3 e. (4) Give the names of the elements with the following atomic symbols: B: Boron S: Sulfur Fe: Iron Mg: Magnesium 2. (a) (4) Indicate the numbers of protons, neutrons, and electrons in 47 109 Ag 47 protons, 47 electros, 109-47=62 neutrons
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
(b) (6) Write a balanced equation for the reaction of burning methanol (CH 3 OH) in oxygen: 2 CH 3 OH + 3 O 2 2 CO
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern