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Copper metal has a density of
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- In one box of nails, there are 75 iron nails weighing 0.280 lblb . The density of iron is 7.86 g/cm3g/cm3. The specific heat of iron is 0.452 J/g∘CJ/g∘C. The melting point of iron is 1535 ∘C∘C. Nails made of iron have a density of 7.86 g/cm3g/cm3. A) What is the volume, in cubic centimeters, of the iron nails in the box? B) If 40 nails are added to a graduated cylinder containing 15.7 mLmL of water, what is the new level of water, in milliliters, in the cylinder?arrow_forwardIf a monolayer of stearic acid has a mass of 2.5*10^-5 g and occupies a surface area of 82 cm^2, what is the height of the monolayer, in cm? The density of stearic acid is 0.839 g/cm^3.arrow_forwardTungsten metal, which is used in lightbulb filaments, has the highest melting point of any metal (3410C). What is this melting point in degrees Fahrenheit?arrow_forward
- 1.78 Some farmers use ammonia, NH3, as a fertilizer. This ammonia is stored in liquid form. Use the participate perspective to show the transition from liquid ammonia to gaseous ammonia.arrow_forwardIdentify the following properties as either extensive or intensive. volume temperature humidity heat boiling pointarrow_forwardProviding no reaction occurs, a solid will float on any liquid that is more dense than it is. The volume of a piece of calcite weighing 35.6 g is 12.9 cm3. On which of the following liquids will the calcite float: carbon tetrachloride (density = 1.60 g/cm3), methylene bromide (density = 2.50 g/cm3), tetrabromoethane (density = 2.96 g/cm3), or methylene iodide (density = 3.33 g/cm3)?arrow_forward
- Which of the following are chemical changes? Which are physical changes? a. the cutting of food b. interaction of food with saliva and digestive enzymes c. proteins being broken down into amino acids d. complex sugars being broken down into simple sugars e. making maple syrup by heating maple sap to remove water through evaporation f. DNA unwindingarrow_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_forwardWhich of the following is a pure substance? (a) dry ice (solid CO2) (b) 9 K gold (c) dry air (d) bloodarrow_forward
- The following data refer to the element phosphorus. Classify each as a physical or a chemical property. (a) It exists in several forms, for example, white, black, and red phosphorus. (b) It is a solid at 25C and 1 atm. (c) It is insoluble in water. (d) It burns in chlorine to form phosphorus trichloride.arrow_forwardConvert the following Kelvin temperatures to Celsius and Fahrenheit degrees. a. the temperature that registers the same value on both the Fahrenheit and Celsius scales, 233 K b. the boiling point of helium, 4 K c. the temperature at which many chemical quantities are determined, 298 K d. the melting point of tungsten, 3680 Karrow_forwardWhich of the following are the same and which are different? a. a substance and a pure substance b. a heterogeneous mixture and a solution c. a substance and a mixture d. a homogeneous mixture and a solutionarrow_forward
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