Answer:
the answer is A pls mark me
Explanation:
The boiling point of Sodium chloride(aq) is higher and the freezing point of Sodium chloride(aq) is lower.
The boiling point is the temperature at which the pressure exerted by the surroundings upon a liquid is equal to the pressure exerted by the vapour of the liquid.
Usually, in this context, you would be referring to the boiling and freezing point of a Sodium chloride solution compared to pure H2O.
The boiling point of pure water is 100 degrees Celcius (212 Fahrenheit), and the freezing/melting point is below 0 degrees Celcius (32 Fahrenheit). For a solution, the boiling point is raised and the melting point is lowered.
This means that water will stay liquid for an increased range of temperature. Depending on the amount of Sodium chloride solute in the water, the boiling and melting points may change a few degrees.
Learn more about the boiling point here:
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b.the potential energy of the reactants is high; the potential energy decreases gradually; then increases slightly.
c. the potential energy of the reactants is low; the potential energy remains low; rapidly peaks, then rapidly falls.
d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.
Answer:
d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.
Explanation:
Potential energy is the term that refers to the energy stored in a body, which can be used for several different things, even if transformed into other types of energy, depending on the need that that body presents at the moment. If the body needs to move, for example, the potential energy is transformed into kinetic energy. If the body needs to heat up or cool down, the potential energy turns into thermal energy.
Based on this, we can conclude what happens to the potential energy of a reaction that occurs in water, when the temperature of the surrounding water is reduced. If the temperature is reduced, it means that the water is losing energy and the potential energy of the reagents is low; as a result, the potential energy gradually decreases; then it increases a little.
In 6.3 moles of calcium, there are approximately 3.79 x 10²⁴ atoms. This is calculated using Avogadro's number (6.022 x 10²³), which provides the number of atoms in a mole.
To find the number of atoms in 6.3 moles of calcium, you need to use Avogadro's number, which is 6.022 x 10²³. This number, known as Avogadro's constant, is the number of atoms or molecules in one mole of any substance. Therefore, you would calculate the number of atoms as follows:
6.3 moles of calcium × (6.022 x 10²³ atoms/mole) = 3.79 x 10²⁴ calcium atoms.
So, 6.3 moles of calcium have approximately 3.79 x 10²⁴ calcium atoms.
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Answer:
They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Hope this helps :)
Answer:
Groups one of the periodic table.
Lithium Li
Sodium Na
Potassium K
Rubidium Rb
Cesium Cs
Francium Fr
Hello there!
Hydrogen has one proton because the number of protons in an atom is equal to the atomic number of the element. S ince hydrogen's atomic number is 1, it has one proton.
I hope that's help !
Answer:1
Explanation:
hydrogen only has 1