. Lance obtains a silvery metallic unknown. He weighs the metal and finds that he has 60.55g. When he places the metal in a graduated cylinder that contains 25.2 mL of water, the final volume is 32.2 mL. a) Calculate the change in volume (AV) of water in the graduated cylinder. b) Calculate the density of the metal. c) Lance's teacher gives him a list of possible unknowns: chromium, cadmium, molybdenum, nickel, or zinc. What is the identity of her sample?

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A:

Q: 6. Three different sets of data of [A] versus time are given in the table below for the reaction A→…

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A: The answer is as follows:

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A:

Q: 2. Calculate reaction AH°rxn and reaction AU°rxn for the total oxidation of benzene. Use the stable…

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Q: 7) of aqueous 15.75 Predict the pH (> 7, < 7, or solutions containing the following salts: (a) KBr,…

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Q: Activity 1. Lewis Structures Instructions: Draw a Lewis structure for: (a) H2S, (b) OF2, (c)…

A:

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A:

Q: 4. Methanoic acid, HCOOH, has a K₂ value of 1.58 x 104 mol/L. What ratio of methanoic acid and…

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Q: ypewritten for upvote. No upvote for handwritten. Thank you

A: (a) The properties that make water a good solvent are its polarity and its capacity for hydrogen…

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A:

Q: 1. For substances that will be in thermal contact, how would we know which will absorb energy…

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A:

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A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.