Percent solution of NaCl = 3.26%
Step 1: Determine the mass of NaCl in the initial solution
The initial solution is 25% NaCl, which means there are 25 grams of NaCl for every 100 grams of solution. To find the mass of NaCl in the 75g solution, use this proportion:
(25g NaCl / 100g solution) = (x / 75g solution)
Solve for x:
x = (25g NaCl * 75g solution) / 100g solution
x = 18.75g NaCl
Step 2: Determine the total mass of the diluted solution
Add the mass of water (500g) to the mass of the initial solution (75g):
Total mass = 500g water + 75g solution = 575g diluted solution
Step 3: Calculate the percentage of NaCl in the diluted solution
Use the mass of NaCl from Step 1 and the total mass of the diluted solution from Step 2 to find the percentage by mass:
Percentage = (Mass of NaCl / Total mass of diluted solution) * 100
Percentage = (18.75g NaCl / 575g diluted solution) * 100
Percentage ≈ 3.26%
The percent solution by mass of NaCl in the diluted solution is approximately 3.26%.
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Answer:
oxidizing agent and is reduced
Explanation:
The oxidation number of Mg changes from 0 to +2. So, magnesium is reduced and is the oxidizing agent.
-Carbonic Acid
-Hydrogen Gas
-Atom
-Proton
-Sodium Chloride
-Triglyceride
-Electron
-Protein
-Amino Acid
Valence electrons are the electrons located in an atom's outermost shell. They play a critical role in chemical bonding and reactions and determine the atom's reactivity and placement in the Periodic Table.
The electrons located in the outermost shell of an atom are correctly referred to as valence electrons. These electrons play a crucial role in chemical bonding and reactions because they are the most distant from the atom's nucleus and thus, the most loosely bound, making them available for interactions with other atoms. For instance, when atoms interact to form a chemical bond, the valence electrons are often the ones that are shared, transferred, or involved in the bond formation. The number of valence electrons in an atom also determines the atom's reactivity and its placement in the Periodic Table.
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Answer:
The correct answer is elevation.
Explanation:
In a geographical place, the elevation refers to the height below or above a precise reference point generally above the sea level. The term elevation is primarily applied when considering towards the points on the surface of the Earth, while geopotential height or altitude terms are used for considering the points above the surface like a spacecraft in orbit or an aircraft in flight, and depths are applied for the points underneath the surface.