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Chapter 1 Solutions
CHEMISTRY:PRIN.+REACTIONS-OWLV2 ACCESS
- Molecular distances are usually given in nanometers (1 nm = 1 109 m) or in picometers (1 pm = 1 1012 m). However, the angstrom () unit is sometimes used, where 1 = 1 1010 m. (The angstrom unit is not an SI unit.) If the distances between the Pt atom and the N atom in the cancer chemotherapy drug cisplatin is 1.97 , What is this distances in nanometers? In picometers?arrow_forwardGold leaf, which is used for many decorative purposes, is made by hammering pure gold into very thin sheets. Assuming that a sheet of gold leaf is 1.27 105 cm thick, how many square feet of gold leaf could be obtained from 28.35 g gold? The density of gold is 19.3 g/cm3.arrow_forwardA solution is prepared by dissolving table salt, sodium chloride, in water at room temperature. a Assuming there is no significant change in the volume of water during the preparation of the solution, how would the density of the solution compare to that of pure water? b If you were to boil the solution for several minutes and then allow it to cool to room temperature, how would the density of the solution compare to the density in part a? c If you took the solution prepared in part a and added more water, how would this affect the density of the solution?arrow_forward
- A 15.5 g sample of sodium carbonate is added to a solution of acetic acid weighing 19.7 g. The two substances react, releasing carbon dioxide gas to the atmosphere. After reaction, the contents of the reaction vessel weigh 28.7 g. What is the mass of carbon dioxide given off during the reaction?arrow_forward1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information would you need to look up and how would you determine the percentage of ethanol in this solution?arrow_forwardA sample of a bright blue mineral was weighed in air, then weighed again while suspended in water. An object is buoyed up by the mass of the fluid displaced by the object. In air, the mineral weighed 7.35 g; in water, it weighed 5.40 g. The densities of air and water are 1.205 g/L and 0.9982 g/cm3, respectively. What is the density of the mineral?arrow_forward
- Express the measurements to the requested number of significant figures. (a) 96,485 J/C to three significant figures (b) 2.9979 g/cm3 to three significant figures (c) 0.0597 mL to one significant figure (d) 6.626 1034 kg to two significant figuresarrow_forwardThe label on a bale of mulch indicates a volume of 1.45 ft3. The label also states that the mulch in the bale will cover an area of a garden 6 ft 6 ft to a depth of 1 in. Account for the discrepancy in the given volumes.arrow_forwardA chemistry student needs 25.0g of diethylamine for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of diethylamine is ·0.706g cm−3. Calculate the volume of diethylamine the student should pour out. Round your answer to 3 significant digits.arrow_forward
- mol A chemist must prepare 875. mL of 10.0 mM aqueous calcium sulfate (CaSO) working solution. He'll do this by pouring out some 0.0110 aqueous L calcium sulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the calcium sulfate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits. mL x10arrow_forwardA chemistry student needs 70.0 g of dimethyl sulfoxide for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of dimethyl sulfoxide is 1.10 g·cm -3 Calculate the volume of dimethyl sulfoxide the student should pour out. Round your answer to 3 significant digits.arrow_forwardA chemist must prepare 0.525 L of 1.00 M aqueous sodium chloride (NaCl) working solution. She'll do this by pouring out some 5.91 M aqueous sodium chloride stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in L of the sodium chloride stock solution that the chemist should pour out. Round your answer to 3 significant digits. 0₁ x10 X 3arrow_forward
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