Answer:
"Water and ethyl alcohol will both have dipole-dipole interactions.
Technically they will both have Hydrogen bonding, which is a type of dipole-dipole. This is due to the high electronegativity values of oxygen atoms compared to the carbon and hydrogen atoms the oxygens bond to. This causes regions of both of these molecules that have partial negative charges and other regions wind up with partial positive charges.
Hexane will not have any dipole-dipole interactions because it is a non-polar molecule. The intermolecular forces between hexane molecules will be dispersion forces."
Explanation:
Here is the place I found the answer: https://socratic.org/questions/which-of-these-structures-has-dipole-dipole-interactions-water-h2o-ethyl-alcohol
All of this answer belongs to that person. I do not own any of this information.
Gonna have to go with A since two genes create a new one example is parents having a kid that’s how I understood it sorry if it’s wrong or I misunderstood
Answer:
<h2> a. The diffusion of Na ions into the cell is facilitated by the Na concentration gradient across the plasma membrane.</h2>
Explanation:
Cells differ in the concentration of Na+ and many other chemicals inside and out side of the cell, so diffusion of Na+ ions into the cell is facilitated by the Na+ concentration gradient across the membrane.
The diffusion of K+ ions out of the cell is also prevented by the electrical gradient across the plasma membrane.
In the cell, the electro chemical gradient is larger for Na+ than for K+ and many other substances.
Answer:
oxygen obey the octet rule when reacting to form compounds by adding 2 electrons.
Explanation:
Answer:
<u><em></em></u>
- <u><em>1. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.</em></u>
<u><em></em></u>
Explanation:
<em>1. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.</em>
This statement is true: the <em>mechanical energy</em> is the kinetic and potential energy.
When the pendulum swings, it exchanges potential and kinetic energy: when the pendulum is at the highest altitude, the potential energy is maximum, and the kinetic energy is zero; when the pendulum is at the lowest altitude, the potential energy is zero and the kinetic energy is maximum.
Nevertheless, due to the friction with air, part of the energy is transformed into thermal energy (heat) all the time the pendulum is moving. At the end, all the mechanical energy is transformed into thermal energy, and the pendulum stops.
<em><u>2. The mechanical energy disappears as the pendulum slows and eventually stops moving.</u></em>
<em />
This is false. As per the law of conservation of energy the enery does not dissapear but transformed into other forms: mechanical energy can be transformed into thermal or sound energy, or other forms of energy.
<em>3. The pendulum will continue moving at the same speed until someone stops it because energy cannot be destroyed.</em>
This is false. The friction with air causes the conversion of mechanical energy into thermal energy, and the pendulum will stop enven in no one stops it.
<em />
<em>4. The pendulum will slow down but will never stop moving because energy cannot be destroyed</em>.
This is false. As explained above the pendulum will slow down and stop moving because the mechanical energy will transform in thermal energy.
