Question 1 Which of the following factors contribute to the fact that the polarizability of helium...
Question 1
Which of the following factors contribute to the fact that the polarizability of helium is less than that of argon? Select all that apply.
Helium's electrons are more tightly bound than those of argon, since they are closer to the nucleus.
Helium's nucleus is smaller and the protons cannot move as far as those of argon.
Argon has many more electrons that can adjust to an external electric field than does helium.
Helium and argon are both inert gases and so do not have dipoles.
Polarons require large surface areas on which to create polarizability, and argon has more surface area than does helium.
Argon has more isotopes, and this spreads out the charge more.
Question 2
What interactions contribute the most to holding the two strands of DNA together?
base-pair bonds
dipole bonds
hydrogen bonds
dipole-induced dipole bonds
Intermolecular bonds
Homework Answers
Add Answer to:
Question 1 Which of the following factors contribute to the fact that the polarizability of helium...
Which of the following factors contribute to the fact that the polarizability of helium is less...
Which of the following factors contribute to the fact that the polarizability of helium is less than that of argon? Select all that apply. Helium's electrons are more tightly bound than those of argon, since they are closer to the nucleus. Helium's nucleus is smaller and the protons cannot move as far as those of argon. Argon has many more electrons that can adjust to an external electric field than does helium. Helium and argon are both inert gases and...
Which of the following factors contribute to the fact that the polarizability of helium is less than that of argon?
Which of the following factors contribute to the fact that the polarizability of helium is less than that of argon? Select all that apply. Helium's electrons are more tightly bound than those of argon, since they are closer to the nucleus. Helium's nucleus is smaller and the protons cannot move as far as those of argon. Argon has many more electrons that can adjust to an external electric field than does helium. Helium and argon are both inert gases and so do not have...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
These questions are to guide your studying. They do not cover all of the topics that...
These questions are to guide your studying. They do not cover all of the topics that may be on exams. Using the Internet, find out how many isotopes of Carbon exist in nature. Which are the three most abundant? Consult a periodic table. Determine the atomic numbers and mass numbers for: An atom of oxygen with 8 neutrons. An atom of Phosphorus with two more neutrons than protons. An atom of Aluminum with 14 neutrons.^32P is an unstable isotope of...
1) Define the following: matter, element, atom, trace element, proton, electron, neutron, atomic number, mass number,...
1) Define the following: matter, element, atom, trace element, proton, electron, neutron, atomic number, mass number, isotopes, radioisotope, molecule, compound, salt, ion. 2) List the 6 elements that make up about 99% of the weight of an organism. 3) What are the functions of the trace elements iron, fluorine (fluoride), and iodine? 4) An iodine deficiency can result in goiter. True/False 5) Where are protons, neutrons and electrons located? 6) Can you determine the atomic number and mass number from...
check each statement about the temperature, check each item that is a unit of pressure, which...
check each statement about the temperature, check each item that is
a unit of pressure, which of the following pairs of substances are
held together by hudrogen bonds, multiple choice, name the phase
16. Check each true statement about the temperature 0 K. The K stands for kilo. The K stands for Kelvin. This is a temperature that is suitable for biological processes. It is absolute zero. This temperature is the middle of the Kelvin scale. This is the coldest...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloi...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloids B) solutions D) all of these 2. In most liquid solutions, the component present in the larger amount is called the A) dispersed medium B) emulsifying agent C) solute D) solvent 3. lodine, 12(s), is more soluble in dichloromethane, CHCI than in water because A) both iodine and...
17. The distance between an electron and a hole across a band gap following electronic excitation...
17. The distance between an electron and a hole across a band gap following electronic excitation is called A. Bohr exciton radius B. Bohr radius C. quantum D. conduction band 18. When a photon strikes an atom, the energy is absorbed by A. a proton which moves to an excited state. B. a neutron which causes the nucleus to split. C. an electron which moves from the ground to an excited state. D. nothing. A photon is never absorbed by...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
Which of the following factors contribute to the fact that the polarizability of helium is less than that of argon? Select all that apply. Helium's electrons are more tightly bound than those of argon, since they are closer to the nucleus. Helium's nucleus is smaller and the protons cannot move as far as those of argon. Argon has many more electrons that can adjust to an external electric field than does helium. Helium and argon are both inert gases and...
2. Identify the strongest type of intermolecular forces in acetone, ethanol, water and hexane. (Structures listed on page 15.) Experiment 2 Intermolecular Forces There are three general types of intermolecular forces. All substances exhibit London Dispersion Forces (LDF), and they are generally the weakest of the three types. These London forces are due to the attractions between small, temporary dipoles that arise from the constant, random movement of the electrons in a substance. As molar mass increases, the size of...
These questions are to guide your studying. They do not cover all of the topics that may be on exams. Using the Internet, find out how many isotopes of Carbon exist in nature. Which are the three most abundant? Consult a periodic table. Determine the atomic numbers and mass numbers for: An atom of oxygen with 8 neutrons. An atom of Phosphorus with two more neutrons than protons. An atom of Aluminum with 14 neutrons.^32P is an unstable isotope of...
check each statement about the temperature, check each item that is
a unit of pressure, which of the following pairs of substances are
held together by hudrogen bonds, multiple choice, name the phase
16. Check each true statement about the temperature 0 K. The K stands for kilo. The K stands for Kelvin. This is a temperature that is suitable for biological processes. It is absolute zero. This temperature is the middle of the Kelvin scale. This is the coldest...
The smallest chemical units of matter are atoms b) molecules c) protons d) neutrons e) electrons . Which of the following would have the largest size? a) an atom b) a molecule c) a proton d) a neutron e) an electron 3. Isotopes of an element differ in the number of a) protons in the nucleus b) electrons in the nucleus © neutrons in the nucleus d) electron clouds e) energy levels they contain 4. VO The atomic number represents...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloids B) solutions D) all of these 2. In most liquid solutions, the component present in the larger amount is called the A) dispersed medium B) emulsifying agent C) solute D) solvent 3. lodine, 12(s), is more soluble in dichloromethane, CHCI than in water because A) both iodine and...
17. The distance between an electron and a hole across a band gap following electronic excitation is called A. Bohr exciton radius B. Bohr radius C. quantum D. conduction band 18. When a photon strikes an atom, the energy is absorbed by A. a proton which moves to an excited state. B. a neutron which causes the nucleus to split. C. an electron which moves from the ground to an excited state. D. nothing. A photon is never absorbed by...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
Most questions answered within 3 hours.
-
1. What are specialty engines? ( )
a. Logical Processors that perform specialized functions
b. An...
asked 36 minutes ago -
a. What double precision floating point
number is represented by the following 64-bit binary? Show your...
asked 1 hour ago -
Indicate whether the statement is true or false
(1-20).
1)A good time management plan will eliminate...
asked 2 hours ago -
Which one of the following will occur when the internal rate of
return equals the required...
asked 2 hours ago -
The mean value of land and buildings per acre from a sample of
farms is $1800,...
asked 2 hours ago -
The Hotel Conneautis considering 3 the
following capital budgeting projects
The Hotel Conneaut has internal funind for...
asked 2 hours ago -
Which of the following is NOT a product of the first step in the
p-p chain...
asked 2 hours ago -
The chance that UPS will deliver a package to a customer within
X days is normally...
asked 2 hours ago -
3Cu(NO3)2(aq) + 2Al(s) ---> 3Cu(s) + 2Al(NO3)3(aq) if you
have 32 moles of aluminum, what is...
asked 2 hours ago -
Four 100 micro Farads capacitors are connected in parallel, the
equivalent capacitance of these four capacitors...
asked 2 hours ago -
What is the pH of a 3% solution of atropine sulfate knowing that
the molecular weight...
asked 3 hours ago -
A company has current assets of
$90,000 and its current ratio is 2.5. Assume that the...
asked 3 hours ago