Answer:
aphelion
Explanation:
A planet moves with constantly changing speed as it moves about its orbit. The fastest a planet moves is at perihelion (closest) and the slowest is at aphelion (farthest).
Answer:
21 molecules of oxygen.
Explanation:
The balanced equation is
2CH3CH2COOH + 7O2 -----> 6CO2 + 6H2O.
So 2 molecules of propanoic acid require 7 moles of oxygen.
Therefore 6 molecules require 7/2 * 6 = 21 molecules of oxygen.
Freezing point is defined as the temperature needed for a liquid to turn into a solid and a melting point is the temperature needed for a solid to become a liquid. Sodium Chloride has a lower freezing point than water, as such when it is added to icy roads it helps to melt the ice faster by lowering the melting point of the water making it turn into a liquid faster/easier even if it is "cold" outside.
Tungsten (W) has an atomic number 74
The nearest noble gas to tungsten in the periodic table is Xe which has atomic number of 54.
Therefore, the configuration of W using the noble gas Xe will be as follows:
<span>[Xe] 4f14 5d4 6s2</span>
There would be no net movement of glucose
The given statement is wrong. Glucose solutions are not electrolytes and therefore do not conduct electricity.
Is sodium chloride a good conductor of electricity? Simply by dissolving or dissolving it in water, it cannot conduct electricity as a solid.
Saline contains Na+ and Cl- ions. If ions are present in the solution, these ions can move through the solution and carry an electric current. Pure water and sugar solutions do not contain significant ions. Sugar molecules do not break down into ions when dissolved.
When glucose is added to water, it dissolves readily but does not dissociate into ions. Therefore, a glucose solution is not an electrolyte and is not a conductor of electricity.
Substances that dissolve in water to form a conductive solution are called electrolytes. Substances that dissolve in non-conductive solutions are called non-electrolytes. All soluble ionic compounds are electrolytes.
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