Blog

What is the chemical formula of the compound formed when aluminum cations combine with fluorine anions?

Paper:  QE Gebhardt.pdf | You download and/or print this for reference as you complete part 2 of the exam. PSU Library Access: Click on the Library Resources link in the left-hand navigation bar to access the PSU libraries and assist in completing this exam. You may download PDFs from the library and access/reference them throughout this exam. In addition here is a quick to Penn State University Libraries search.

The Lewis Dot Structure of PF3 shows that the central phosphorous atom has ____ nonbonding electrons and ____ bonding electron pairs.

Within construction, understanding the compressive strength of concrete is critical to providing an appropriate result for the job.  As such, a study from Chung-Hua University has provided data associated with the aggregate mixtures associated with concrete, curing age, and the resulting compressive strength.  Please download this dataset and provide an analysis to address the following question: A construction company is very interested in understanding the relationship between the age of the concrete and its compressive strength.  Please analyze this relationship and provide a useful characterization of the results. Be sure to include an overview of the problem, a structured analysis of the problem with a formal write-up of your results (in addition to software output), and an interpretation of the results. Use the attached data set for the scenario above.  Data Source: I-Cheng Yeh, “Modeling of strength of high performance concrete using artificial neural networks,” Cement and Concrete Research, Vol. 28, No. 12, pp. 1797-1808 (1998)  

Paper:  QE Cady.pdf | You may download and/or print this for reference as you complete part 2 of the exam. PSU Library Access: Click on the Library Resources link in the left-hand navigation bar to access the PSU libraries and assist in completing this exam. You may download PDFs from the library and access/reference them throughout this exam. In addition here is a quick to Penn State University Libraries search.

A double covalent bond is composed of ____ pairs of electrons that are shared between two atoms. 

Paper:  QE Clark.pdf | You download and/or print this for reference as you complete part 2 of the exam. PSU Library Access: Click on the Library Resources link in the left-hand navigation bar to access the PSU libraries and assist in completing this exam. You may download PDFs from the library and access/reference them throughout this exam. In addition here is a quick to Penn State University Libraries search.

For a chlorine atom to complete an octet, it must _____.

27- 30 Use an expression with “estar” or with “tener” to describe the pictures (2 words: the verb and the feeling/description). Use these if needed.  Copy/paste. (Control +  c to copy/. Control +v to paste.  For Mac: command +c and command + v) á            é                í                ó                  ú                    ñ 27. Ellos _______________.

Mucha gente cena pavo y pasa el día con la familia. Es______.