A person on vacation in another country paid a large price for a necklace pendant that was supposed to be pure gold. The density of gold is 19.3 g/mL.  The necklace had a mass of 218.5 g.  A large cylinder was filled with 35.0 mL of water.  The necklace was placed in the cylinder, and the water rose to 48.4 mL. Which statement would be TRUE? The pendant is pure gold The pendant might have gold in it but it is not pure gold The pendant is probably made of plastic No conclusions can be drawn from the information provided

Q: A 5.00 M NaCl “stock” solution is available. How would 300 mL of a 0.100 M NaCl solution be…

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Q: which if the following is not an ionic compound? FeCl3 NaC2H302 KI MgCO3 CC14

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Q: A compound of cesium and iodine contains  65.62 g  of metal and  62.54 g  of nonmetal. How many…

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Q: 25) A solution is prepared by dissolving 23.7 g of CaCl₂ in 375 g of water. The density of the…

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Q: 14. What volume of water must be added to 14.8 mL of a pH 2.0 solution of HNO3 in order to change…

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Q: You may refer to the states of matter image when considering the answer to this question. Select 3…

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Q: sider the reaction: 25()+302(g) 250, (g) Write the equilibrium constant for this reaction in terms…

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Q: AXE NOTATION ELECTRON GEOMETRY  MOLECULAR GEOMETRY  LEWIS STRUCTURE OF EXAMPLE AXE2       ACE3

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Q: A 100 mL solution contains 4.7g MgCl₂ (MM = 94 g/mol). The density of the solution is 1.03 g/mL.…

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Q: From the TLC plate, Which compound is the following? 10 cm ruler least polar most polar TLC plate…

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Q: 1. For the following rate law... Rate = K[NO₂]²[H₂] a. What is the order with respect to each…

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Q: The dissociation constant for salicylic acid, C6H4(OH)COOH, is 1.0 x 10-3. a. Calculate for the per…

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Q: 3. How many mL of ethyl alcohol can be distilled from 1.5 L of a 90 proof wine?

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Q: CI- H C CH3 CH3

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Q: While multiple resonance structures exist for the molecule, draw the two best resonance structures…

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Q: Write a balanced equation for the double-replacement precipitation reaction described, using the…

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Q: 23) How many grams of sodium chloride are there in 55.0 mL of a 1.90 M aqueous solution of sodium…

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Q: Calculate the density of a solid with mass 27.16g. The solid was placed in a measuring cylinder…

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Q: A power (a) Calcu stack. (b 150% C a. the flue g

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Q: I and II are: M I JOH O identical. O diastereomers. O constitutional isomers. enantiomers. Но,

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Q: Assuming that the rate-determining step in the reaction of cyclohexanol with hydrogen bromide to…

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Q: 1. How many GRAMS of chromium(III) nitrite are present in 2.18 moles of this compound ? grams. 2.…

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Q: River water analysis of mercury (Hg) yields a spectrophotometric sample signal of 0.712 for a 5.00…

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Q: Name the following ions: 2- CrO4²- is the CIO4 is the MnO4 is the OH is the ion ion ion ion

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Q: ex Calculate and for the particle in a 1-D box of length L described by: 4(x)=√√(7) sin()

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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.