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A 68.0-g piece of aluminum has a net charge of +4.40 HC. Aluminum has an atomic...
An electrically neutral aluminum prosthetic hip has a mass f 100 g. As part of the...
An electrically neutral aluminum prosthetic hip has a mass f 100 g. As part of the manufacturing process, electrons are added to the prosthesis until it reaches a final charge of -5.0 uC. The molar weight of aluminum is 27 g and its atomic number is 13. a) How many electrons were added to the prosthesis in the manufacturing process? b) What percentage of the total number of electrons initially present in the aluminum prosthesis does the answer in part...
A 52.8 g ball of copper has a net charge of 2.7 µC. What fraction of...
A 52.8 g ball of copper has a net charge of 2.7 µC. What fraction of the copper's electrons have been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.) What is the charge on the sphere contributed by protons? How many total protons are there?
What net charge would you place on a 112 g piece of sulfur if you put...
What net charge would you place on a 112 g piece of sulfur if you put an extra electron on 2 in 1012 of its atoms? (Sulfur has an atomic mass of 32.1 grams per mole.) Give your answer in microcoulombs. Remember that extra electrons result in negative charge!
Aluminum (atomic mass 26.98 g/mol) crystallizes in a face-centered cubic unit cell. In addition, aluminum has...
Aluminum (atomic mass 26.98 g/mol) crystallizes in a face-centered cubic unit cell. In addition, aluminum has an atomic radius of 143.2 pm. What is the density (g/cm3) of aluminum? O A. 0.6742 g/cm3 B. 2.697 x 10-30 g/cm3 OC.0.3708 g/cm3 OD. 2.697 g/cm3 O E. 1.191 x 10-44 g/cm3
A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03]/°C-mol) is heated...
A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03]/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
P. A copper penny has a mass of 2.5 g. Suppose it has a net charge...
P. A copper penny has a mass of 2.5 g. Suppose it has a net charge of +1.2 nC. How many electrons has it lost? What fraction of the total number of electrons in an uncharged penny is this?
b. A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C-mol)...
b. A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C-mol) is heated to 621 and dropped into a calorimeter containing water (specific heat capacity of water is 1.10 MB initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
What net charge would you place on a 395 g piece of sulfur if you put...
What net charge would you place on a 395 g piece of sulfur if you put an extra electron on 1 in 10^12 of its atoms? (sulfur has an atomic mass of 32.1.)
both questions please 6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to...
both questions please
6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18J/gºC) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter. 7. A single pulse of a laser yields an average of 5.00 x 101 photons with = 633 nm. If melting ice...
A 17.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C·mol) is...
A 17.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C·mol) is heated to 82.4°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 22.3°C. The final temperature of the water is 25.3°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
Aluminum (atomic mass 26.98 g/mol) crystallizes in a face-centered cubic unit cell. In addition, aluminum has an atomic radius of 143.2 pm. What is the density (g/cm3) of aluminum? O A. 0.6742 g/cm3 B. 2.697 x 10-30 g/cm3 OC.0.3708 g/cm3 OD. 2.697 g/cm3 O E. 1.191 x 10-44 g/cm3
A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03]/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18 J/g°C) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
P. A copper penny has a mass of 2.5 g. Suppose it has a net charge of +1.2 nC. How many electrons has it lost? What fraction of the total number of electrons in an uncharged penny is this?
b. A 92.5 g piece of aluminum (which has a molar heat capacity of 24.03 J/°C-mol) is heated to 621 and dropped into a calorimeter containing water (specific heat capacity of water is 1.10 MB initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter.
both questions please
6. A 89.2 g piece of aluminum (which has a molar heat capacity of 24.031/°C-mol) is heated to 624°C and dropped into a calorimeter containing water (specific heat capacity of water is 4.18J/gºC) initially at 19.2°C. The final temperature of the water is 135.2°C. Ignoring significant figures, calculate the mass of water in the calorimeter. 7. A single pulse of a laser yields an average of 5.00 x 101 photons with = 633 nm. If melting ice...
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