which of the following is a strong electrolyte. sugar, sodium chloride, honey vinager, carbon tetrachloride?

Answers

Answer 1

Answer: Electrolyte is a substance, once dissolved in water, produces an electically conducting solution or current. Electrolytes are classified as weak electrolytes or strong electrolytes.

Sugar is a nonelectrolyte. It does dissolve in water but it dissolves as molecules not ions.

Sodium chloride is a strong electrolyte. It dissolves as 100% ions in solutions.

Honey vinegar. some acid found in vinegar are considered weak electrolytes.

Carbon tetrachoride is not an electrolyte. It doesn't break down into ions because its bond is very strong and doesn't break under normal conditions of a solution.

Answer 2

Answer:

Final answer:

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.

Explanation:

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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What reaction is depicted by the given equation:
Au3+ + 3e− Au

Answers

The reaction represents an oxidation-reduction reaction where it shows the reduction reaction part. The Au is reduced from a charge of positive 3+ to a neutral charge. An oxidation-reduction reaction is any reaction that involves changes in the oxidation number by gaining or losing electrons.

Acid rain is caused by human activity. true or false?

Answers

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.

Acid rain is cause by human activity and pollution, therefore, this is true.

In which block of the periodic table is chromium (Cr) found?

Answers

Chromium is in period 4, group 6 on the periodic table

Answer:

chromium atomic mass 52.00 atomic number is 24 period 4 group 6 6b

Explanation:

I checked the periodic table hope I helped

Calculate the percent by mass of the solute in each of the following aqueous solutions: (a) 5.50 g of NaBr in 78.2 g of solution, (b) 31.0 g of KCl in 152 g of water, (c) 4.5 g of toluene in 29 g of benzene.

Answers

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:

$\text{Mass percent of solute}=\frac{\text{Mass of solute}}{\text{Mass of solution}}* 100$ .......(1)

For a:

We are given:

Mass of NaBr (Solute) = 5.50 g

Mass of solution = 78.2 g

Putting values in equation 1, we get:

$\text{Mass percent of NaBr}=(5.50g)/(78.2g)* 100\n\n\text{Mass percent of NaBr}=7.03\%$

Hence, the mass percent of NaBr is 7.03 %

For b:

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:

$\text{Mass percent of KCl}=(31.0g)/(183g)* 100\n\n\text{Mass percent of KCl}=16.94\%$

Hence, the mass percent of KCl is 16.94 %

For c:

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:

$\text{Mass percent of toluene}=(4.5g)/(33.5g)* 100\n\n\text{Mass percent of toluene}=13.43\%$

Hence, the mass percent of toluene is 13.43 %

Final answer:

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%

Explanation:

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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The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given amount to decay?I'm not quite sure how to set it up to even start working it? help would be appreciated! Thanks!!

Answers

t½=18.72days
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What is the pHpH of a 0.10M0.10M solution of NCNNaCN? The aK a of HCNHCN is 4.9×10−104.9×10 −10 . A) 5.15 B) 8.85 C) 2.85 D) 11.15

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Hello, you can find the photo I took here, it should help. https://t.ly/MhKKA

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