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2 years ago

A solution that has a large amount of dissolved solute is called

Chemistry

1 answer:

kvasek [131]2 years ago

6 0

Answer: It is an unsaturated solution

Explanation: This is because it has more solute than a normal solution.

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Which element melts at room temperature?

just olya [345]

Francium is an element that melts at room temperature. Francium is a highly reactive element, and only contains one valence electron, which is very ironic in my opinion.

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3 years ago

Read 2 more answers

Calculate the cfse for a d^3 system in an octahedral field in units of ∆_o. In other words, do not enter "∆_o" with your answer.

Rudik [331]

Magnetic moment (spin only) of octahedral complex having CFSE=−0.8Δo and surrounded by weak field ligands can be : Q

To answer this, the Crystal Field Stabilization Energy has to be calculated for a (d3 metal in both configurations. The geometry with the greater stabilization will be the preferred geometry. So for tetrahedral d3, the Crystal Field Stabilization Energy is: CFSE = -0.8 x 4/9 Δo = -0.355 Δo.

[Co(CN)64-] is also an octahedral d7 complex but it contains CN-, a strong field ligand. Its orbital occupancy is (t2g)6(eg)1 and it therefore has one unpaired electron. In this case the CFSE is −(6)(25)ΔO+(1)(35)ΔO+P=−95ΔO+P.

The crystal field stabilization energy (CFSE) (in kJ/mol) for complex, [Ti(H2O)6]3+. According to CFT, the first absorption maximum is obtained at 20,3000cm−1 for the transition.

To learn more about crystal field stabilization energy visit:brainly.com/question/29389010

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8 0

8 months ago

The organelle responsible for providing energy to the cell is what?

zvonat [6]

Mitochondrion (mitochondria)

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2 years ago

Solution A is 100 times as acidic as solution B. What is the difference in pH values of solution A and solution B

devlian [24]

Answer:

The difference is 2 pH units.

Explanation:

Let's give an arbitrary value to the H⁺ concentration of solution A, [H⁺]ₐ:

[H⁺]ₐ = 0.001 M

If that's the case then the pH of solution A would be:

pHₐ = -log(0.001) = 3

----

The H⁺ concentration of solution B ( [H⁺]ₓ ) is 100 higher than that, so:

[H⁺]ₓ = 0.001 * 100 = 0.1 M

And its pH:

pHₓ = -log(0.1) = 1

So the difference in pH values is:

pHₐ - pHₓ = 3 - 1 = 2

3 0

3 years ago

Three Stoichiometry Questions

andrezito [222]

Answer:

Explanation:

Given data:

Mass of aluminium = 2.5 g

Mass of oxygen = 2.5 g

Mass of aluminium oxide = 3.5 g

Percent yield = ?

Solution:

Chemical equation:

4Al + 3O₂ → 2Al₂O₃

Number of moles of Al:

Number of moles = mass/ molar mass

Number of moles = 2.5 g/ 27 g/mol

Number of moles = 0.09 mol

Number of moles of oxygen:

Number of moles = mass/ molar mass

Number of moles = 2.5 g/ 32 g/mol

Number of moles = 0.08 mol

Now we will compare the moles of aluminium oxide with aluminium and oxygen.

Al ; Al₂O₃

4 : 2

0.09 : 2/4×0.09 = 0.045

O₂ : Al₂O₃

3 : 2

0.08 : 2/3 ×0.08 = 0.053

The number of moles of aluminium oxide produced by Al are less so it will limiting reactant.

Mass of aluminium oxide:

Mass = number of moles × molar mass

Mass = 0.045 × 101.96 g/mol

Mass = 4.6 g

Percent yield:

Percent yield = actual yield / theoretical yield ×100

Percent yield = 3.5 g / 4.6 ×100

Percent yield = 76.1%

Given data:

Mass of copper produced = 3.47 g

Mass of aluminium = 1.87 g

Percent yield = ?

Solution:

Chemical equation:

2Al + 3CuSO₄ → Al₂(SO₄)₃ + 3Cu

Number of moles of Al:

Number of moles = mass/ molar mass

Number of moles = 1.87 g/ 27 g/mol

Number of moles = 0.07 mol

Now we will compare the moles of copper with aluminium.

Al ; Cu

2 : 3

0.07 : 3/2×0.09 = 0.105

Mass of copper:

Mass = number of moles × molar mass

Mass = 0.105 × 63.55 g/mol

Mass = 6.67 g

Percent yield:

Percent yield = actual yield / theoretical yield ×100

Percent yield = 3.47 g / 6.67 × 100

Percent yield = 52%

4 0

3 years ago