Sodium chloride is the strong electrolyte among the options provided. Strong electrolytes are substances that completely dissociate into ions when dissolved in water. Other examples of strong electrolytes include strong acids like hydrochloric acid and strong bases such as sodium hydroxide.
Among the options provided, sodium chloride is a strongelectrolyte. Electrolytes are substances that yield ions when dissolved in water. Specifically, strong electrolytes dissociate completely into ions when dissolved, leading to high conductive capacity, which is characteristic of strong electrolytes such as sodium chloride. Other substances like sugar, vinegar, or carbon tetrachloride, do not dissociate into ions when dissolved, making them non-electrolytes rather than strong electrolytes.
Examples of other strong electrolytes include strong acids like hydrochloric acid (HCl), which fully dissociates into hydrogen and chloride ions. Strong bases like sodium hydroxide (NaOH) are also strong electrolytes as they readily donate OH¯ when dissolved in water. On the other hand, weak acids and bases, such as the acids in tomato juice or vinegar, do not completely dissociate and are considered weak electrolytes.
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Au3+ + 3e− Au
Explanation:
Acid rain is caused due to increase in nitrogen oxide and sulfur oxide into the atmosphere.
The amount of these oxides increases into the atmosphere due to increase in pollution.
Therefore, pollution is caused by humans. For example, pollution from sources like vehicles, industries, factories, labs etc leads to increase in the development of harmful gases.
Thus, the statement acid rain is caused by human activity is true.
Answer:
chromium atomic mass 52.00 atomic number is 24 period 4 group 6 6b
Explanation:
I checked the periodic table hope I helped
Answer:
For a: The mass percent of NaBr is 7.03 %
For b: The mass percent of KCl is 16.94 %
For c: The mass percent of toluene is 13.43 %
Explanation:
To calculate the mass percentage of solute in solution, we use the equation:
.......(1)
We are given:
Mass of NaBr (Solute) = 5.50 g
Mass of solution = 78.2 g
Putting values in equation 1, we get:
Hence, the mass percent of NaBr is 7.03 %
We are given:
Mass of KCl (Solute) = 31.0 g
Mass of water (solvent) = 152 g
Mass of solution = (31.0 + 152) g = 183 g
Putting values in equation 1, we get:
Hence, the mass percent of KCl is 16.94 %
We are given:
Mass of toluene (Solute) = 4.5 g
Mass of benzene (solvent) = 29 g
Mass of solution = (4.5 + 29) g = 33.5 g
Putting values in equation 1, we get:
Hence, the mass percent of toluene is 13.43 %
To calculate the percent by mass of the solute in each aqueous solution, divide the mass of the solute by the mass of the solution and multiply by 100%
To calculate the percent by mass of the solute in each aqueous solution, you'll need to use the formula:
Percent by mass = (mass of solute/mass of solution) x 100%
For example, in solution (a) with 5.50 g of NaBr in 78.2 g of solution, the mass of the solute is 5.50 g and the mass of the solution is 78.2 g. Plugging these values into the formula gives:
Percent by mass = (5.50 g / 78.2 g) x 100% = 7.03%
Similarly, you can calculate the percent by mass for solutions (b) and (c) using the same formula.
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Hello, you can find the photo I took here, it should help. https://t.ly/MhKKA