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iren2701 [21]
3 years ago
15

What is silica gel commonly used for? A. Absorbing moisture to protect goods from damage. B. As insulation in buildings. C. As a

lacquer on wood to make it water-resistant. D. A soft, flexible padding, such as on pen grips or mouse pads.
Chemistry
1 answer:
omeli [17]3 years ago
5 0

Answer:

A

Explanation:

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Substance which speed up the rusting process​
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salt solution speeds up rusting processing

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What is bank?Effect of drug abuse.<br>​
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Drugs that people smoke or inhale can damage the respiratory system and lead to chronic respiratory infections and diseases. Opioids slow a person’s breathing by binding to specific receptors in the central nervous system that regulate respiration. By depressing a person’s respiration, these drugs can lead to slow breathing or heavy snoring.

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7 0
3 years ago
A solution is prepared by adding 91.3 g of sodium bromide [NaBr], to 115. g of water. Determine whether the solution is saturate
MrMuchimi

<u>Answer:</u> The given solution is unsaturated solution

<u>Explanation:</u>

We are given:

Solubility of NaBr = 9.19 m

Unsaturated solution is defined as the solution in which more solute particles can be dissolved in the solvent.

Saturated solution is defined as the solution in which no more solute particles can be dissolved in the solvent.

A precipitate is defined as the insoluble salt which is formed when two solutions are mixed containing soluble substances. The insoluble salt settles down at the bottom of the reaction mixture.

There are three conditions:

  • When m_{\text{(calculated)}}; the solution is unsaturated
  • When m_{\text{(calculated)}}=m_{\text{(given)}}; the solution is saturated
  • When m_{\text{(calculated)}}>m_{\text{(given)}}; precipitate will form

To calculate the molality of solution, we use the equation:

\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}  

Where,

m_{solute} = Given mass of solute (sodium bromide) = 91.3 g

M_{solute} = Molar mass of solute (sodium bromide) = 103 g/mol

W_{solvent} = Mass of solvent (water) = 115 g

Putting values in above equation, we get:

\text{Calculated molality of NaBr}=\frac{91.3\times 1000}{103\times 115}\\\\\text{Calculated molality of NaBr}=7.71m

As, the calculated solubility is less than the given solubility. So, the solution will be unsaturated.

Hence, the given solution is unsaturated solution

5 0
2 years ago
An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
tamaranim1 [39]

The light intensity. The transparency of the filter, the bandwidth of the filter,  

Also the color temperature of light source

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3 years ago
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