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,2. A penny initially contains 1.76 × 1023 protons and an equal number of electrons. The...
A 25-g copper penny is given a charge of-4.0 penny? 10-9 C. How many excess electrons...
A 25-g copper penny is given a charge of-4.0 penny? 10-9 C. How many excess electrons are on the x 9.426 x 1010 electrons 4.296 x 1010 clectrons 2. 496 x 1010 electrons 1.946 x 1010 electrons Question 2 (12.5 points) atomic nucleus are typically 10-15 m apart. What is the electric force of repulsion between Protons in a nuclear protons? 320.7 N 430.7 N 230.7 N 130.7 N
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49...
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49 neutrons, 49 electrons. c. 49 protons, 49 alpha particles d. 49 protons, 63 neutrons. 2. Which of the following atomic symbols is incorrect? d. 3. How many atoms of hydrogen are present in 6.43 g of NH? a. 2.27 x 10 b. 1.28 x 10 1.16x 10 d. 6.82 10 4. A 2.55 ml sample of ethylene glycol antifreeze) has a mass of 2.83...
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) proton...
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) protons and neutrons e) neutrons 66) The atomic number of an atom is: a) the number of electrons it has b) the number of neutrons it has c) the number of protons it has d) the number of protons plus the number of neutrons it has e) the combined total of protons, neutrons and electrons that it has 67) In water,...
Chapter-18 Electric Forces and Electric Fields 1. One mole of a substance contains 6.02 x 1023...
Chapter-18 Electric Forces and Electric Fields 1. One mole of a substance contains 6.02 x 1023 protons and an equal number of electrons. If the protons could somehow be separated from the electrons and placed in very small, individual containers separated by a million meters, what would be the magnitude of the electrostatic force exerted by one box on the other? A) 8.7 x 103N B) 9.5 x 104N C) 2.2 x 105N D) 8.4 x 107 N 1.6x108 N...
2. A large molecule contains a total of 165a protons and 1871 neutrons. a. How many electrons does the molecule con...
2. A large molecule contains a total of 165a protons and 1871 neutrons. a. How many electrons does the molecule contain if it has a net charge of oC? b. How many electrons does each molecule contain if 15 000 of these molecules have a total charge of -7.x 105C? c. How many electrons does each molecule contain if 15 000 of these molecules have a total charge of 2.4 x 105C? le brought close to, but not touching, where...
Number of protons and electrons in Be^2+
Number of protons and electrons in Be^2+
State the number of protons and electrons in each of the following: State the number of...
State the number of protons and electrons in each of the following: State the number of protons in Zn2+ Express your answer as an integer. VO AQ R o 2 ? Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining - Part B State the number of electrons in Zn2+. Express your answer as an integer. V ASO A N O P ? State the number of protons and electrons in each of the following: Part C...
a) Calculate the electrical force between a gram of protons and the same number of electrons...
a) Calculate the electrical force between a gram of protons and the same number of electrons that are separated by 1 m. (There are about 5.979x1023 protons in a gram, each with a charge of +1.602x10-19 C; charge on an electron is the same magnitude but negative) b) Calculate the gravitational force between two 1g masses 1 meter apart, when F- Gmm2/r2 where G is equal to 6.67x10-11 N m2 / kg2 What is the magnitude difference between these two...
1. How many moles are present in 1.51 x 1023 molecules of HCl? A. 9.12 mol...
1. How many moles are present in 1.51 x 1023 molecules of HCl? A. 9.12 mol B. 0.251 mol C. 3.99 mol D. 146 mol 2. Ions can be formed from atoms by losing or gaining electrons. Select the alternative that states the correct number of protons, neutrons, and electrons in Cu2+ with mass number 63. A. 29 protons, 34 neutrons, 31 electrons B. 29 protons, 34 neutrons, 27 electrons C. 27 protons, 29 neutrons, 29 electrons D. 29 protons,...
Give the number of protons, electrons, and neutrons in each of the following: a. ^10 5...
Give the number of protons, electrons, and neutrons in each of the following: a. ^10 5 B b. ^199 80 Hg c. ^63 29 Cu d. ^77 34 Se Write the symbol for each of the following ions: a. the ion with 3+charge, 28 electrons, and a mass number of 71 b. the ion with 36 electrons, 35 protons, and 45 neutrons c. the ion with 86 electrons, 142 neutrons, and a 4 + charge d. the ion with a...
A 25-g copper penny is given a charge of-4.0 penny? 10-9 C. How many excess electrons are on the x 9.426 x 1010 electrons 4.296 x 1010 clectrons 2. 496 x 1010 electrons 1.946 x 1010 electrons Question 2 (12.5 points) atomic nucleus are typically 10-15 m apart. What is the electric force of repulsion between Protons in a nuclear protons? 320.7 N 430.7 N 230.7 N 130.7 N
1. An atom of Indium-112 contains 49 protons, 63 neutrons, 49 electrons. b. 49 protons, 49 neutrons, 49 electrons. c. 49 protons, 49 alpha particles d. 49 protons, 63 neutrons. 2. Which of the following atomic symbols is incorrect? d. 3. How many atoms of hydrogen are present in 6.43 g of NH? a. 2.27 x 10 b. 1.28 x 10 1.16x 10 d. 6.82 10 4. A 2.55 ml sample of ethylene glycol antifreeze) has a mass of 2.83...
65) The nucleus of an atom contains: a) protons and electrons b) just electrons c) electrons and neutrons d) protons and neutrons e) neutrons 66) The atomic number of an atom is: a) the number of electrons it has b) the number of neutrons it has c) the number of protons it has d) the number of protons plus the number of neutrons it has e) the combined total of protons, neutrons and electrons that it has 67) In water,...
Chapter-18 Electric Forces and Electric Fields 1. One mole of a substance contains 6.02 x 1023 protons and an equal number of electrons. If the protons could somehow be separated from the electrons and placed in very small, individual containers separated by a million meters, what would be the magnitude of the electrostatic force exerted by one box on the other? A) 8.7 x 103N B) 9.5 x 104N C) 2.2 x 105N D) 8.4 x 107 N 1.6x108 N...
2. A large molecule contains a total of 165a protons and 1871 neutrons. a. How many electrons does the molecule contain if it has a net charge of oC? b. How many electrons does each molecule contain if 15 000 of these molecules have a total charge of -7.x 105C? c. How many electrons does each molecule contain if 15 000 of these molecules have a total charge of 2.4 x 105C? le brought close to, but not touching, where...
State the number of protons and electrons in each of the following: State the number of protons in Zn2+ Express your answer as an integer. VO AQ R o 2 ? Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining - Part B State the number of electrons in Zn2+. Express your answer as an integer. V ASO A N O P ? State the number of protons and electrons in each of the following: Part C...
a) Calculate the electrical force between a gram of protons and the same number of electrons that are separated by 1 m. (There are about 5.979x1023 protons in a gram, each with a charge of +1.602x10-19 C; charge on an electron is the same magnitude but negative) b) Calculate the gravitational force between two 1g masses 1 meter apart, when F- Gmm2/r2 where G is equal to 6.67x10-11 N m2 / kg2 What is the magnitude difference between these two...
Give the number of protons, electrons, and neutrons in each of the following: a. ^10 5 B b. ^199 80 Hg c. ^63 29 Cu d. ^77 34 Se Write the symbol for each of the following ions: a. the ion with 3+charge, 28 electrons, and a mass number of 71 b. the ion with 36 electrons, 35 protons, and 45 neutrons c. the ion with 86 electrons, 142 neutrons, and a 4 + charge d. the ion with a...
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