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Yuliya22 [10]
3 years ago
9

The combination of ions most likely to produce a precipitate is Group of answer choices Mg2 and C2H3O2-. Fe3 and OH-. Li and PO4

3-. Pb2 and NO3-. NH4 and SO42-.
Chemistry
1 answer:
Paul [167]3 years ago
8 0

Answer:

The combination of ions most likely to produce a precipitate is a group of answer choices:

lead nitrate soluble in water

Mg2+ and C2H3O2-.

Fe3+ and OH-.

Li+ and PO43-.

Pb2+ and NO3-.

NH4+ and SO42-.

Explanation:

Among the given options,

magnesium acetate, lithium phosphate, lead nitrate, ammonium sulfate are soluble in water.

The only one which is insoluble in water is Fe^3+ and OH^- combination.

Fe(OH)_3 is insoluble in water. It forms a precipitate.

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What volume of 0.500 M zinc nitrate contains 2.94 g of zinc nitrate?
krek1111 [17]
24518 is the answer to your queston
7 0
3 years ago
Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an el
Likurg_2 [28]

Answer: 281 hours

Explanation:-

1 electron carry charge=1.6\times 10^{-19}C

1 mole of electrons contain=6.023\times 10^{23} electrons

Thus  1 mole of electrons carry charge=\frac{1.6\times 10^{-19}}{1}\times 6.023\times 10^{23}=96500C

Cu^{2+}+2e^-\rightarrow Cu

96500\times 2=193000Coloumb of electricity deposits 1 mole or 63.5 g of copper

0.0635 kg of copper is deposited by 193000 Coloumb

11.5 kg of copper is deposited by=\frac{193000}{0.0635}\times 11.5=34952756 Coloumb

Q=I\times t

where Q= quantity of electricity in coloumbs  = 34952756 C

I = current in amperes = 34.5 A

t= time in seconds = ?

34952756 C=34.5A\times t

t=1013123sec=281hours

Thus it will take 281 hours to plate 11.5 kg of copper onto the cathode if the current passed through the cell is held constant at 34.5 A.

8 0
3 years ago
A) A 100-watt lightbulb radiates energy at a rate of 100 J/s. (The watt, a unit of power, or energy over time, is defined as 1 J
Ipatiy [6.2K]

Answer:

The answers are as given in the attachment

Explanation:

The application of the de brogile equation was used and appropriate substitution were made as shown in the attachment

8 0
3 years ago
A atom neutral (one with 0 extra charge)?
telo118 [61]
Nuetrons=neutral
protons =positive
electrons=negative
8 0
3 years ago
Calculate each of the following quantities:<br> (b) Mass (kg) of 3.58 mol of CuCl₂ . 2H₂O
Gre4nikov [31]

The mass of 3.58 mol of CuCl₂ . 2H₂O is 610.31 grams.

<h3>What is mass?</h3>

Mass is the quantity of matter in a physical body. The product of the molar mass of the compound and the moles of the substance are defined as mass.

The formula is

Mass = molar mass x moles

The molar mass of CuCl₂ . 2H₂O = 170.48 g/mol

To find the molar mass of the compound, add all the atoms of one molecule.

The moles of CuCl₂ . 2H₂O is given that is 3.58 mol

Substituting the value in the formula

3.58 mol x 170.48 g/mol = 610.31 gram

Thus, the mass of 3.58 mol of CuCl₂ . 2H₂O is 610.31 grams.

To learn more about mass, refer to the link:

brainly.com/question/1420904

#SPJ4

8 0
2 years ago
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