A large ruby has a mass of 12.070 carats (1 carat = 200.0 mg). Rubies are...
A large ruby has a mass of 12.070 carats (1 carat = 200.0 mg). Rubies are made of a crystalline form of Al2O3.
A) What percentage of the mass of the ruby is aluminum?
B) How many atoms of aluminum are in this ruby?
C) The density of rubies is 4.02 g/cm3. What is the volume of the ruby?
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A large ruby has a mass of 12.070 carats (1 carat = 200.0 mg).
Rubies are...
1. What is the length in μm of an object with a length of 22.6 nm?...
1. What is the length in μm of an object with a length of 22.6 nm? 2. What volume of aluminum (in cm3) with a density of 2.70 g/cm3 is required to have 5.27 g of aluminum? 3. A block has a mass of 10.75 g and sides of length: 14.3 mm, 14.6 mm, 14.5 mm. What is its density in g/cm3? 4. What is the mass in kg of an object with a mass of 5472 mg?
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid...
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid aluminum and oxygen gas according to the reaction below. 4 Al+3 O2 + 2 Al2O3 a. If have 10 moles of Al, and an unlimited amount of Oz, how many moles of Al2O3 could you make? b. If have 10 moles of O2, and an unlimited amount of Al, how many moles of Al2O3 could you make? c. If you were to combine 10.0...
Aluminum (Al) has FCC unit cell geometry and lattice parameter 4.0 Å. a. How many complete...
Aluminum (Al) has FCC unit cell geometry and lattice parameter 4.0 Å. a. How many complete atoms are contained in one unit cell? b. What is the atomic radius (Å)? c. What is the unit cell volume? d. If the atomic mass of Al is 27 grams per mole (or amu), what is an Al atom’s mass in grams? e. What is the mass of the unit cell? f. What is the density of Al in units of atomic mass...
Diamond is a pure form of the element carbon. If a 2 carat diamond has a mass of 0.396 g, how many carbon...
26) Diamond is a pure form of the element carbon. If a 2 carat diamond has a mass of \(0.39626\) ) g. how many carbon atoms are contained in this diamond?A) \(2.38 \times 10^{23}\) atomsB) \(1.99 \times 10^{23}\) atomsC) \(1.99 \times 10^{22}\) atomsD) \(3.97 \times 10^{22}\) atomsE) \(6.58 \times 10^{-25}\) atoms27) Dinitrogen monoxide, or laughing gas \(\left(\mathrm{N}_{2} \mathrm{O}\right)\), is used as a dental anesthetic and as an aerosol propellant. How many molecules of \(\mathrm{N}_{2} \mathrm{O}\) are present in a \(12.6...
An irregularly-shaped piece of Aluminum has a mass of 76.6 grams. What is the volume of...
An irregularly-shaped piece of Aluminum has a mass of 76.6 grams. What is the volume of this piece of Aluminum if its density is 2.70 g/cm3?
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a...
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3. A fitting composed of common brass has a total volume of 126.5 cm3 . How many atoms of copper does the fitting contain? How many atoms of zinc does the fitting contain?
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a...
Common brass is a copper and zinc alloy containing 37.0% zinc by mass and having a density of 8.48 g/cm3. A fitting composed of common brass has a total volume of 122.5 cm3 . How many atoms of copper does the fitting contain? How many atoms of zinc does the fitting contain?
An irregularly shaped piece of aluminum has a mass of 35.65 g. What volume (in mL)...
An irregularly shaped piece of aluminum has a mass of 35.65 g. What volume (in mL) of water should displace if it is solid all the way through? Aluminum has a density of 2.7 g/cm3
1) Aluminum has a density of 2.699 g/cm3, and the radius of the aluminum atom is 143 pm. Verify that the metal crystalli...
1) Aluminum has a density of 2.699 g/cm3, and the radius of the
aluminum atom is 143 pm. Verify that the metal crystallizes as a
face-centered cube.
EX. 3 Calculate the percentage of the total volume is occupied by spheres in (a) a simple cube, (b) a body-centered cube, and (c) a face-centered cube in which all atoms are identical. (b) A body-centered cube (bcc)
all of 8 please. 8. An aluminum wire carrying a current of 5 A has a...
all of 8 please.
8. An aluminum wire carrying a current of 5 A has a cross sectional area of 4 x 10'6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electrons are supplied by each atom). a) Recall the mass flow rate equation from semester 1. Rms Ro v b) Write the equivalent current relation for charges in a wire, I- c) What is the electrical analogy...
5. Imagine that you have discovered a new way of making synthetic rubies by combining solid aluminum and oxygen gas according to the reaction below. 4 Al+3 O2 + 2 Al2O3 a. If have 10 moles of Al, and an unlimited amount of Oz, how many moles of Al2O3 could you make? b. If have 10 moles of O2, and an unlimited amount of Al, how many moles of Al2O3 could you make? c. If you were to combine 10.0...
26) Diamond is a pure form of the element carbon. If a 2 carat diamond has a mass of \(0.39626\) ) g. how many carbon atoms are contained in this diamond?A) \(2.38 \times 10^{23}\) atomsB) \(1.99 \times 10^{23}\) atomsC) \(1.99 \times 10^{22}\) atomsD) \(3.97 \times 10^{22}\) atomsE) \(6.58 \times 10^{-25}\) atoms27) Dinitrogen monoxide, or laughing gas \(\left(\mathrm{N}_{2} \mathrm{O}\right)\), is used as a dental anesthetic and as an aerosol propellant. How many molecules of \(\mathrm{N}_{2} \mathrm{O}\) are present in a \(12.6...
1) Aluminum has a density of 2.699 g/cm3, and the radius of the
aluminum atom is 143 pm. Verify that the metal crystallizes as a
face-centered cube.
EX. 3 Calculate the percentage of the total volume is occupied by spheres in (a) a simple cube, (b) a body-centered cube, and (c) a face-centered cube in which all atoms are identical. (b) A body-centered cube (bcc)
all of 8 please.
8. An aluminum wire carrying a current of 5 A has a cross sectional area of 4 x 10'6 m2. Find the drift speed of the electrons in the wire. The density of aluminum is 2.7 g/cm3. (Assume three electrons are supplied by each atom). a) Recall the mass flow rate equation from semester 1. Rms Ro v b) Write the equivalent current relation for charges in a wire, I- c) What is the electrical analogy...
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