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2 years ago

Explain the meaning of the phrase “like dissolved like”

Chemistry

2 answers:

irinina [24]2 years ago

6 0

dissolving is like when something forms.

lapo4ka [179]2 years ago

4 0

Explanation:

Like dissolves like means polar solvents dissolve polar molecules whereas non-polar solvents dissolve non-polar molecules.

For example, water $(H_{2}O)$ is a polar solvent and it is able to dissolve NaCl (sodium chloride) because NaCl is a polar molecule.

Whereas benzene is a non-polar molecule and it is able to dissolve in $CCl_{4}$ (carbon tetrachloride) solvent which is a non-polar solvent.

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Explain the meaning of the terms "saturated," "unsaturated," and "supersaturated"

dmitriy555 [2]

Saturated Solution: A solution with solute that dissolves until it is unable to dissolve anymore, leaving the undissolved substances at the bottom. Unsaturated Solution: A solution ( with less solute than the saturated solution )that completely dissolves, leaving no remaining substances. Supersaturated Solution.

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1 year ago

QuiCk AsAp HeLp mE FasT

zzz [600]

Answer:

Explanation:

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2 years ago

When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 10.085 g at 20ºC. If the d

Arte-miy333 [17]

The percentage error is the error of the measured value to the true value. To find he percent error, the equation is as follows:

Percent error = |Measured Value - True Value|/True Value * 100
The || is needed to get the absolute value of the difference. Substituting the values,

Percent error = |(10.085 g/10 mL) - 0.9975 g/mL|/<span>0.9975 g/mL * 100
</span><em>Percent error = 1.1% </em>

8 0

2 years ago

What has affected the honeybee population?

Darya [45]

1. pesticides: that are sprayed on crops and flowers

2. global warming: warm winters have caused plants to shift their schedules. when the honey bees come out of hibernation, the flowers they need to feed on have already bloomed and died

3. pathogens carried by mites weaken bees

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2 years ago

In a galvanic cell,a oxidation occurs at the (name of electrode)b.the cathode is the (sign) electrodec.cations flow in solution

Tatiana [17]

Answer: a) anode

b) positive

c) cathode

d) anode to cathode

Explanation:

Galvanic cell is defined as a device which is used for the conversion of the chemical energy produces in a redox reaction into the electrical energy.

In the galvanic cell, the oxidation occurs at an anode which is a negative electrode and the reduction occurs at the cathode which is a positive electrode. Thus the electrons are produced at anode and travel towards cathode.

Due to loss of electrons at anode, positive charge in concentrated in anode and negative charge is concentrated in cathode. To balance these charges , positive ions or cations from salt bridge move towards cathode and negative ions or anions from salt bridge move towards anode.

The balanced two-half reactions will be:

Oxidation half reaction : $M(s)\rightarrow M^{n+}(aq)+ne^-$

Reduction half reaction : $X^{n+}(aq)+ne^-\rightarrow X(s)$

Thus the overall reaction will be,

$M(s)+X^{n+}(aq)\rightarrow M^{n+}(aq)+X(s)$

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2 years ago