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3 years ago

What are some strong, weak, and non electrolytes?

2 answers:

6 0

KNO3 is a strong electrolyte.
CH3COOH is a weak electrolyte because it ionizes partially.
Benzene is a non-electrolyte because it do not dissociate in solution.

GrogVix [38]3 years ago

3 0

Strong acids, strong bases, and salts are strong electrolyte.

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A substance that produces hydroxide ions when placed in water is a(n) _____.

bekas [8.4K]

Answer: A substance that produces hydroxide ions when placed in water is base.

Explanation:

Bases are the substance:

Which gives negatively charged hydroxide( $OH^-$ ) ions in aqueous solution.

Which have pH value ranging from 7 to 14.

$BOH(aq)\rightarrow B^+(aq)+OH^-(aq)$

Where as acid gives positively charged hydronium ion( $H^+$ ) in aqueous solution.

7 0

3 years ago

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A bottle containing 415 g of cleaning solution is used to clean hospital equipment. If the cleaning solution has a specific grav

neonofarm [45]

Answer: 483 mL of the cleaning solution are used to clean hospital equipment

Explanation:

The question requires us to calculate the volume, in mL, of solution is used to clean hospital equipment, given that 415g of this solution are used and the specific gravity of the solution is 0.860.

Measurements > Density

Specific gravity is defined as the ratio between the density of a given substance to the density of a reference material, such as water:

$Specific\text{ gravity = }\frac{density\text{ of substance}}{density\text{ of reference substance}}$

The density of a substance is defined as the ratio between the mass and the volume of this substance:

$density=\frac{mass}{volume}$

Considering the reference substance as water and its density as 1.00 g/mL, we can determine the density of the substance which specific gravity is 0.860:

$0.860=\frac{density\text{ of substance}}{1.00g/mL}\rightarrow density\text{ of substance = 0.860g/mL}$

Thus, taking water as the reference substance, we can say that the density of the cleaning solution is 0.860 g/mL.

Now that we know the density of the cleaning solution (0.860 g/mL) and the mass of solution that is used to clean hospital equipment (415g), we can calculate the volume of solution that is used to clean the equipment:

$\begin{gathered} density=\frac{mass}{volume}\rightarrow volume=\frac{mass}{density} \\ \\ volume=\frac{415g}{0.860g/mL}=483mL \end{gathered}$

Therefore, 483 mL of the cleaning solution are used to clean hospital equipment.

6 0

1 year ago

Leonard designed a parallel circuit to light two light bulbs. But his circuit doesn’t work. Which two items in the circuit must

klasskru [66]

Answer : When a parallel circuit is built the voltage across each of the components remains the same, also the total current passed is the equal to sum of the currents passing through each components in the circuits.

When 2 or more components are tried to be connected in parallel they maintain the same potential difference (in voltage) across their ends of the circuit.

The potential differences across the components are the observed to be same in magnitude, and they have identical polarities between them.

Then, this same voltage is applicable to all circuit components connected in parallel.

So, if each bulb is wired to the battery in a separate loop, the bulbs will be in parallel series.

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3 years ago

Which model shows 6 electrons in the outer shell of the atom?

AVprozaik [17]

D. Model number 2

Hope this helps!! (:

7 0

3 years ago

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What are 4 enzymes responsible for digestion along with their substrate and end product

elena55 [62]

Answer:

4 enzymes responsible for digestion:

1. Salivary amylase ---- substrate: Starch ---- end-product: Maltose

2. Lipase ---- substrate: Lipids (fats and oils) ---- end-product: Fatty acids and glycerol

3. Maltase ---- substrate: Maltose ---- end-product: Glucose

4. Protease ---- substrate: Protein ---- end-product: Amino acids

4 0

2 years ago