Answer:
Explanation:
The partial negative charge in a water molecule occurs because of differences in electronegativity between the atoms involved. A water molecule (H2O) consists of two hydrogen atoms and one oxygen atom. Oxygen is significantly more electronegative than hydrogen, which means it has a stronger attraction for electrons.
In a covalent bond between hydrogen and oxygen, such as in a water molecule, electrons are shared between the two atoms. However, because oxygen is more electronegative, it pulls the shared electrons closer to itself, creating an uneven distribution of electron density. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+).
The electronegativity difference between hydrogen and oxygen causes the electrons in the covalent bonds to spend more time around the oxygen atom, making it partially negatively charged. This partial negative charge on the oxygen atom and the partial positive charges on the hydrogen atoms give water its polar nature. This polarity plays a crucial role in various chemical and physical properties of water, such as its ability to form hydrogen bonds, its high surface tension, and its unique solvent properties.
The statement about “Upwelling is a process in which warm, nutrient rich water from the deep ocean rises to the surface” is false. It must be the cold, nutrient rich water from the deep ocean that must rise to the surface and replaces warm surface water. The cause of upwelling is when the local wind patterns blow along the northwest coast of South America causing local surface currents to move away. The warm water is then replaced by the deep cold water
Answer:
false
Explanation:
Chemistry
C) C2H3O2-
D) C6H5COO-
CaCO3 is your answer!
The totalpressure in the container is 1.03 atm, which is the sum of the pressure of the carbon dioxide (1 atm) and the partial pressure of the water vapor (0.03 atm) at 25.0°C.
The question is asking about the total pressure in a container after the sublimation of carbon dioxide at a certain temperature in the presence of water. Carbon dioxide sublimates (turns from solid directly to a gas) at normal atmospheric pressure, which is 1 atm. Sublimation is a phase transition in which a solid turns into a gas without passing through the liquid phase. In this case, the CO2 sublimates and is collected in a container over water.
However, as the gas is collected over water, it also becomes saturated with water vapor. The total pressure in the container is therefore the sum of the partial pressure of the carbon dioxide plus the partial pressure of the water vapor. At 25.0°C, the partial pressure of the water vapor is about 0.03 atm. Therefore, the total pressure in the container will be 1 atm (from the CO2) + 0.03 atm (from the water vapor) = 1.03 atm. This is the total pressure in the container.
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The total pressure in the container is 1.03 atmospheres, combining the pressure of sublimated CO2 (1.00 atm) and the vapor pressure of water at 25.0 °C (0.03 atm).
To determine the total pressure in the container containing carbon dioxide and water vapor, we need to consider both the dry gas pressure and the vapor pressure of water. Carbon dioxide sublimes at 1.00 atm at standard atmospheric pressure. However, the gas collected over water becomes saturated with water vapor. The pressure of the pure CO2 gas is therefore equal to the total pressure minus the vapor pressure of the water. The vapor pressure of water at 25.0 °C is approximately 0.03 atm. Therefore, the total pressure in the container is the sum of the pressure due to the carbon dioxide and the water vapor, which equals 1.00 atm + 0.03 atm = 1.03 atm.
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Select one:
a. 354 kJ of energy will be given off by the reaction
b. 354 kJ of energy will be absorbed by the reaction
c. 708 kJ of energy will be given off by the reaction
d. 708 kJ of energy will be absorbed by the reaction