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You must use the factor-unit method to solve the following problem.  Show your work (conversion factors and units) by using the equation editor() in the toolbar.  Within the equation editor, use  for conversion factors.  Or, show your work (conversion factors and units) on a separate sheet of paper. Immediately after submitting your exam, upload a picture of your work into the Unit 1 Exam Pictures dropbox. Be sure to number your problems and circle your final answer.  A copy of your chemistry textbook is found to have a mass of 2.56×103 g.  What is this copy of your chemistry textbook is in kg? (1000 g = 1 kg)  

Classify the following as a physical or chemical property: The colorless gas hydrogen, reacts explosively when ignited in air.

What would you multiply moles of fluorine (F) by to get the units atoms of fluorine? 

The dense central core of the atom is called the ____.

Use whichever of the following equations necessary to convert 453 K to Fahrenheit.  (Use only these equations – decimal answers will not be accepted)  °C = 5/9 (°F – 32) °F = 9/5 (°C) + 32 °C = K – 273  

Which one of the following lists units of volume in increasing order (from smallest to largest)?

As two clear liquid solutions are added together, a red solid forms. This change is most likely

How many atoms of oxygen are in one molecule of Cu(H2PO4)2?

How many protons, neutrons and electrons are there in an atom that has an atomic number of 81 and a mass number of 209? [protons], [neutrons], [electrons] What is the symbol for the element? [symbol]

Which of the following correctly classifies this substance, CO?