You are working in a zoo and you need to feed the giraffe. The giraffe requires 1,000 lb of feed per day on a dry matter (DM) basis. If you have a grass-hay that is 95% DM, how much hay (in lb per day) on an “as fed” basis would you need to feed the giraffe in order to meet its requirements?

Which of the following molecules contains the most polar bonds?

Using periodic trends, arrange the following atoms in order of increasing electronegativity: Cl, Si, Ga, Sr

Which of the following is a balanced equation for the decomposition reaction that occurs when Mercury(II) oxide decomposes to its elements?

Xenon gas reacts with fluorine gas to form xenon tetrafluoride. Identify which image in the figure represents the reactants and which image therefore represents the products in the correct ratio so that mass is conserved.

Arrange the following bonds in order of increasing polarity: Cl-S, Cl-P, Cl-Si, Cl-Cl

Type your answer to this question in the box below. Write out all your work on your own piece of paper which you will scan/photo and upload as a single PDF file into a separate assignment after completing this exam. Convert 6.2 miles to meters. Use only the exam data provided for unit conversions.

Type your final answer to this question in the box below. Write out all your work on your own piece of paper which you will scan/photo and upload as a single PDF file into a separate assignment after completing this quiz. A brownie contains 1.30 × 102 mg of sodium. What is this mass in units of grams?

Write out all your work on your own piece of paper which you will scan/photo and upload as a single PDF file into a separate assignment after completing this quiz. A chemical reaction requires 3.50 moles of copper(II) nitrate, Cu(NO3)2. What mass of copper(II) nitrate is needed?

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