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3 years ago

Solutions and colloids which contain similarly sized particles can be effectively separated using paper filtration.

Chemistry

2 answers:

mojhsa [17]3 years ago

6 0

False cause there particles arent large enough to be filtered

oee [108]3 years ago

4 0

Answer:

The given statement is false.

Explanation:

A solution is defined as the solution in which the components gets completely dissolved in it. Particles are evenly spread in these solutions. These solution does not scatter light falling on it.

A colloid is defined as the mixtures when physical boundary is seen between the dispersed phase and dispersed medium. They scatter the light falling on it.

Particle size of solutions are smaller than that of the colloids.But size of colloids particles is smaller than the size of pores filter paper used in filtration process due to which they easily escape through filter and results in no separation.

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3 years ago

A eraser has a mass of 4g and a volume of 2cm3 what is it’s density

sladkih [1.3K]

Answer:

<h3>The answer is 2.0 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

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

From the question

mass = 4 g

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We have

$density = \frac{4}{2} \\$

We have the final answer as

Hope this helps you

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3 years ago

A galvanic cell at a temperature of 25.0°C is powered by the following redox reaction:

soldi70 [24.7K]

Answer:

2.01V ( To three significant digits)

Explanation:

First we show the standard reduction potentials of Cu2+(aq)/Cu(s) system and Al3+(aq)/Al(s) system. We can clearly see from the balanced redox reaction equation that aluminium is the anode and was the oxidized specie while copper is the cathode and was the reduced specie. This observation is necessary when substituting values of concentration into the Nernst equation.

The next thing to do is to obtain the standard cell potential as shown in the image attached and subsequently substitute values of concentration and standard cell potential into the Nernst equation as shown. This gives the cell potential under the given conditions.

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2 years ago

Which statement is true?

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Explanation:

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For every chemical reaction, the law of conservation of energy is applicable which states that the energy of the system remains conserved. Energy can neither be created nor destroyed. It can be transformed from one form to another.

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2 years ago