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konstantin123 [22]
2 years ago
10

A chemist has dissolved a certain substance in water. The chemist knows that more of the substance could be dissolved into the w

ater before it stops dissolving. Therefore, the current solution is
.
Chemistry
2 answers:
STALIN [3.7K]2 years ago
8 0

Answer is: the current solution is unsaturated.

Unsaturated solution means that more of a substance can be dissolve.

For example:

Solubility of potassium chlorate (KClO₃) at 100 grams of water at 80°C is 37.5 g, that means that all 37.5 g is completely dissolves, this is the saturated solution.

If we add 20 grams of potassium chlorate in 100 grams of water, there is less solute than the saturated solution, so this is unsaturated solution.

FrozenT [24]2 years ago
5 0
Unsaturated………. The answer
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If 3.53 g of CuNO, is dissolved in water to make a 0.330 M solution, what is the volume of the solution in milliliters?
solmaris [256]

Answer:

84.8 mL

Explanation:

From the question given above, the following data were obtained:

Mass of CuNO₃ = 3.53 g

Molarity of CuNO₃ = 0.330 M

Volume of solution =?

Next, we shall determine the number of mole in 3.53 g of CuNO₃. This can be obtained as follow:

Mass of CuNO₃ = 3.53 g

Molar mass of CuNO₃ = 63.5 + 14 + (16×3)

= 63.5 + 14 + 48

= 125.5 g/mol

Mole of CuNO₃ =?

Mole = mass / Molar mass

Mole of CuNO₃ = 3.53 / 125.5

Mole of CuNO₃ = 0.028 moles

Next, we shall determine the volume of the solution. This can be obtained as follow:

Molarity of CuNO₃ = 0.330 M

Mole of CuNO₃ = 0.028 moles

Volume of solution =?

Molarity = mole /Volume

0.330 = 0.028 / Volume

Cross multiply

0.330 × Volume = 0.028

Divide both side by 0.330

Volume = 0.028 / 0.330

Volume = 0.0848 L

Finally, we shall convert 0.0848 L to millilitres (mL). This can be obtained as follow:

1 L = 1000 mL

Therefore,

0.0848 L = 0.0848 L × 1000 mL / 1 L

0.0848 L = 84.8 mL

Therefore, the volume of the solution is 84.8 mL.

8 0
2 years ago
Draw a resonance structure, complete with all formal charges and lone (unshared) electron pairs, that shows the resonance intera
icang [17]

Answer:see the picture attached

Explanation:

3 0
3 years ago
List two possible steps where impurities may be gained, which would appear to be an increase in copper
Arisa [49]

Answer:

i) During washing

ii) During Measurement

Explanation:

The two possible steps are :

<u>i) During washing </u>: during the washing method the residue may be not completely dried out and this residue ( water) will add up to the final product ( copper yield ) and this kind of error is called human error.

<u>ii) During measurement </u>: If the weighing instrument is faulty there might be addition  in value of the final copper yield which will see the final yield value > 100% . this error occurs when the initial value and final value is  been weighed

8 0
3 years ago
If a copper atom loses two electrons, the name of the copper ion is:
Reil [10]
I think the correct answer from the choices listed above is the second option. If a copper atom loses two electrons, the name of the copper ion is copper (II) ion . Also it is called cupric acid. However, the latter <span>is an old term and is not recommended. Hope this answers the question.</span>
6 0
3 years ago
which statement correctly explains how magnesium and chlorine combine to form magnesium chloride? A) A Cl atom donates two elect
DiKsa [7]

Answer:  D) An Mg atom donates one electron to each of the two Cl atoms.

Explanation: Ionic compound is formed by transfer of electrons from metal to non metal.

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here magnesium is metal with atomic number 12 and chlorine is a non metal with atomic number of 17.

Mg:12:1s^22s^22p^63s^2

Mg^{2+}:10:1s^22s^22p^6

Cl:17:1s^22s^22p^63s^23p^5

Cl^-:18:1s^22s^22p^63s^23p^6

Thus magnesium loses two electrons to form Mg^{2+} and chlorine atoms gain one electron each to form Cl^-

Thus the compound formed is MgCl_2.

4 0
3 years ago
Read 2 more answers
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