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leva [86]
3 years ago
9

Which measurement density or conductance do you believe gives a more accurate method to determine the salt concentration of a so

lution?
Chemistry
1 answer:
lakkis [162]3 years ago
8 0
<span>Conductance gives a more accurate method to determine the salt concentration of a solution.Conductivity would be used with conductors such as metals that include copper and silver.Conductivity is a measure of water's capability to pass electrical flow. This ability is directly related to the concentration of ions in the water. These conductive ions come from dissolved salts and inorganic materials such as alkalis, chlorides, sulfides and carbonate compounds</span>
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In a fizzy drink container how is steel separated from aluminium
barxatty [35]

Answer:

By filtration

Explanation:

In the container, pour water and shake the mixture very well.

Pour the mixture in a clean container thro<u>ugh</u> a <em><u>filt</u></em><em><u>er</u></em><em><u> </u></em><em><u>tunnel</u></em> and steel with be the residue and aluminium will be in water.

Add dilute Ammonia solution to the filtrate to precipitate it and burn until aluminium solid is obtained.

5 0
3 years ago
An impure sample of table salt that weighed 0.8421 g, when dissolved in water and treated with excess AgNO3, formed 2.044 g of A
Lilit [14]

Answer:

99.24%.

Explanation:

  • NaCl reacted with AgNO₃ as in the balanced equation:

<em>NaCl + AgNO₃ → AgCl(↓) + NaNO₃,</em>

1.0 mol of NaCl reacts with 1.0 mol of AgNO₃ to produce 1.0 mol of AgCl and 1.0 mol of NaNO₃.

  • We need to calculate the no. of moles of AgCl produced:

no. of moles of AgCl = mass/molar mass = (2.044 g)/(143.32 g/mol) = 0.0143 mol.

  • Now, we can calculate the no. of moles of NaCl that can precipitated as AgCl (0.0143 mol), these moles represents the no. of moles of pure NaCl in the sample:

<em>using cross multiplication:</em>

1.0 mol of NaCl produce → 1.0 mol of AgCl, from the stichiometry.

∴ 0.0143 mol of NaCl produce → 0.0143 mol of AgCl.

  • Now, we can get the mass of puree NaCl in the sample:

mass of pure NaCl = (no. of moles of pure NaCl)(molar mass of NaCl) = (0.0143 mol)(58.44 g/mol) = 0.8357 g.

∴ The percentage of NaCl in the impure sample = [(mass of pure NaCl)/(mass of the impure sample)] x 100 = [(0.8357 g)/(0.8421 g)] x 100 = 99.24%.

4 0
3 years ago
Do you think human activity is responsible for global warming
Nezavi [6.7K]

yes and no Global warming is natural it just that humans are speeding it up

4 0
3 years ago
When the first ball in a Newton's cradle is pulled back and released, it causes the final ball to move. What does this example o
bazaltina [42]

Answer:

<h3>A. </h3>

Explanation:

Mechanical energy is energy in motion is the example of mechanical energy⚡

7 0
3 years ago
Need help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Valentin [98]
The first one is B because it’s gonna be positive if it’s gaining energy
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