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QUESTION 17 When 162Dy is formed by bombardment of 158Gd, what particle(s) was were used for...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus?...
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
..ll T-Mobile 2:05 PM 29% 12) of the four elements most prevalent in living organisms, which...
..ll T-Mobile 2:05 PM 29% 12) of the four elements most prevalent in living organisms, which element makes up the highest percentage? A) sulfur B) sodium C) oxygen D) potassium E) carbon 13) An atom of an element has atomic number of 6 and mass number of 14. From this information, we can determine that the nucleus has : A) 6 protons. B) 8 electrons. C) 8 neutrons. D) 6 protons and 8 electrons. E) 6 protons and 8 neutrons....
An alpha particle consists of two protons and two neutrons together in one nucleus with a...
An alpha particle consists of two protons and two neutrons together in one nucleus with a mass of 6.64×10−27 kg and charge +2e. The alpha particle flies at 3.0×106 m/s from a large distance toward the nucleus of a stationary gold atom (charge +79e). e=1.6×10−19C,k=9.0×109Nm2/C2. Determine the distance of the alpha particle from the gold nucleus when it stops.
QUESTION 5 A covalent bond is formed a. By the sharing of valence protons between atoms...
QUESTION 5 A covalent bond is formed a. By the sharing of valence protons between atoms b. By the sharing of positrons between atoms c. By the sharing of a pair of electrons between atoms d. By the sharing of boson particles between atoms e. By the sharing of a pair of neutrons between atoms
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con-...
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con- sider a particle has an initial velocity of v , 6.5 × 10%, and the proton has an initial velocity of Up = 0쯩. Assume the proton and the neutron have the sam e mass. a) What are the final velocities of the alpha particle and the proton? b) What is the ratio of the final kinetic energy of the alpha particle to the...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8 d. 2,1 f. 2,8, е. 2,8 g. 2,8,8,2 18. Write the group number and draw the electron-dot symbol for each of the following elements: a. sulfur b. nitrogen c. calcium d. sodium 19. The atomic number of an atom is equal to the number of A) neutrons plus protons B) nuclei C) electrons plus protons E) neutrons D) protons 20. The number of neutrons...
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass...
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of6.64?10?27kg) traveling horizontally at 35.6 km/s enters a uniform, vertical, 1.10 T magnetic field. A) What is the diameter of the path followed by this alpha particle? B) What effect does the magnetic field have on the speed of the particle? C) What are the magnitude of the acceleration of the alpha particle while it is in the magnetic field? D) What are the...
Question 5 5 pts A proton and an alpha particle (the nucleus of a helium atom,...
Question 5 5 pts A proton and an alpha particle (the nucleus of a helium atom, containing two protons and two neutrons) traveling at the speed enter a uniform magnetic field. The velocity vector of each particle is perpendicular to the magnetic field. What is the ratio of the radii of their circular orbits (rproton/r alpha)? 0.5 1.0 1.5 2.0 04.0
An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons....
An alpha particle is a helium nucleus and therefore consists of two protons and two neutrons. Such particle has an initial velocity of +1.60*10^3 m/ s x and enters a region where the electric field is E =- 500.N / C x . a) How much time passes before the alpha particle comes to rest? b) How far has the alpha particle traveled during this time? b) How far has the alpha particle traveled during this time?
5 A lithium atom contains 3 protons, 4 neutrons and 3 electrons. What would be formed...
5 A lithium atom contains 3 protons, 4 neutrons and 3 electrons. What would be formed if one proton is added to this atom? A. a lithium ion B. a different isotope of lithium C. a beryllium ion D. a neutral atom of beryllium
Lemon juice has a high pH. A. True B. False Which subatomic particle(s) orbit the nucleus? A. protons B. neutrons C. electrons D. More than one of the above answers are correct. Molecules that are attracted to water are called ______. A. solvents B. hydrophilic C. hydrophobic D. nonpolar The ability of an organism to maintain a stable internal environment is called __________. A. homeostasis B. denaturation C. replication D. natural selection Ionic bonding occurs when _________. A. two molecules...
..ll T-Mobile 2:05 PM 29% 12) of the four elements most prevalent in living organisms, which element makes up the highest percentage? A) sulfur B) sodium C) oxygen D) potassium E) carbon 13) An atom of an element has atomic number of 6 and mass number of 14. From this information, we can determine that the nucleus has : A) 6 protons. B) 8 electrons. C) 8 neutrons. D) 6 protons and 8 electrons. E) 6 protons and 8 neutrons....
QUESTION 5 A covalent bond is formed a. By the sharing of valence protons between atoms b. By the sharing of positrons between atoms c. By the sharing of a pair of electrons between atoms d. By the sharing of boson particles between atoms e. By the sharing of a pair of neutrons between atoms
3. An alpha particle is a subatomic particle consisting of two protons and two neutrons. Con- sider a particle has an initial velocity of v , 6.5 × 10%, and the proton has an initial velocity of Up = 0쯩. Assume the proton and the neutron have the sam e mass. a) What are the final velocities of the alpha particle and the proton? b) What is the ratio of the final kinetic energy of the alpha particle to the...
17. Identify the elements that have the following electron arrangements: b. 2,8,6 а. 2,4 c. 2,8,8 d. 2,1 f. 2,8, е. 2,8 g. 2,8,8,2 18. Write the group number and draw the electron-dot symbol for each of the following elements: a. sulfur b. nitrogen c. calcium d. sodium 19. The atomic number of an atom is equal to the number of A) neutrons plus protons B) nuclei C) electrons plus protons E) neutrons D) protons 20. The number of neutrons...
Question 5 5 pts A proton and an alpha particle (the nucleus of a helium atom, containing two protons and two neutrons) traveling at the speed enter a uniform magnetic field. The velocity vector of each particle is perpendicular to the magnetic field. What is the ratio of the radii of their circular orbits (rproton/r alpha)? 0.5 1.0 1.5 2.0 04.0
5 A lithium atom contains 3 protons, 4 neutrons and 3 electrons. What would be formed if one proton is added to this atom? A. a lithium ion B. a different isotope of lithium C. a beryllium ion D. a neutral atom of beryllium
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