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![1. Gold has a density of 0.01932 kg/cm³. If a sample with a mass of 3.540 g is drawn out into a
cylindrical fiber of radius 2.900 um, what is the length of the fiber? [Volume of cylinder of
radius r and length h is t h]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb234898a-ca00-4740-ae3d-79576f672843%2Fe03ae74a-1f36-4df9-901c-07bb93c16ce7%2F0iwi0ge_processed.jpeg&w=3840&q=75)
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- Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber a) If the sample of gold,with a mss of 27.63g, is pressed into a leaf of 2 um thickness, what is the area of the leaf? b)If instead,the gold is drawn out into a cylindrical fiber of radius 3 um , what is the lenght of the fiber ?Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 3.226 g, is pressed into a leaf of 6.475 μm thickness, what is the area of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 3.000 μm, what is the length of the fiber?The nucleus of an atom can be modeled as several protons and neutrons closely packed together. Each particle has a mass of 1.67 x 10-27 kg and radius on the order of 10-15 m. (a) Use this model and the data provided to estimate the density of the nucleus of an atom. | kg/m³ (b) Compare your result with the density of a material such as iron w = 7874 kg/m?). What do your result and comparison suggest about the structure of matter?
- Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a) If a sample of gold with a mass of 8.556 g, is pressed into a leaf of 5.931 μm thickness, what is the area of the leaf?1. A substance of mass 49.53 g occupies 1.5 cm of volume. The density of the substance (in g cm) with correct number of significant figures is (A) 3.302 (B) 3.300 (C) 3.3 (D) 3.301A. A cylindrical tube 9.5 cm high and 0.85 cm in diameter is used to collect blood samples. How many cubic decimeters (dm³) of blood can it hold? The volume of a cylinder is given by ar?h,r = radius and h = length. 1B. A cylindrical rod formed from silicon is 16.8 cm long and has a mass of 2.17 kg. The density of silicon is 2.33g/mL. What is the diameter of the cylinder? Hint: the volume of a cylinder is given by ar?h, r = radius and h = length.
- Grains of fine California beach sand are approximately spheres with an average radius of 50 μm and are made of silicon dioxide, which has a density of 2.8 × 103 kg/m3. What mass of sand grains would have a total surface area (the total area of all the individual spheres) equal to the surface area of a cube 1.1 m on an edge?One mole of silicon (6x1023 atoms) has a mass of 28 grams, as shown in the periodic table on the inside front cover of the textbook. The density of silicon is 2.4 grams/cm³. What is the approximate diameter of a silicon atom (length of a bond) in a solid block of the material? Make the simplifying assumption that the atoms are arranged in a "cubic" array, as shown in the figure. Remember to convert to SI units. d =A U.S. 1-cent coin (a penny) has a diameter of 19 mmmm and a thickness of 1.5 mmmm. Assume the coin is made of pure copper, whose density and approximate market price are 8.9 g/cm3g/cm3 and $2.40 per pound, respectively. Calculate the value of the copper in the coin, assuming its thickness is uniform. Express your answer in dollars to two decimal places.
- Let ρAl represent the density of aluminum and ρFe that of iron. Find the radius of a solid aluminum sphere that balances a solid iron sphere of radius rFe on an equal-arm balance.6. A water storage tank, initially containing 125,000 gal of water sees an average daily usage of 30,000 0.05t gal where t is the time in days. gal. If water is added to the tank at an average rate of 5000 e day? how long until the tank runs dry? [5.14 days]The density of platinum is 21.45 x 103 kg/m3. a. Calculate the volume (in m3/atom) occupied per platinum atom b. Estimate the atomic diameter (in m);(The estimate uses the approximation that it is a cubic volume) c. Using this estimation, calculate the thickness of a metal foil (in m) containing 2.0 x 101 atomic layers of platinum.
