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2 years ago

What is the chemical name of the compound represented by the formula Ni2O3?

Chemistry

2 answers:

Lady_Fox [76]2 years ago

5 0

Answer:

Nickel (III) oxide

Explanation:

$Ni_{2}^{+3}O_{3}^{-2}\\Nickel (III) oxide$

nataly862011 [7]2 years ago

3 0

the answer is nickel oxide

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Aspartame, phenylalanine, and aspartic acid were examined by thin‑layer chromatography (TLC) using ninhydrin as the visualizatio

Marizza181 [45]

Answer:

Explanation:

The following precautions should be followed for a safe and efficient laboratory environment:

The TLC plate should be laid on a paper towel, to ease picking it from the bench top.

The used TLC spotters and the used TLC plates in the appropriate waste containers provided for this purpose should be placed in the blood.

Spills should be cleaned up and contaminated surfaces should be washed with water.

The pipette and/or glassware should be rinsed again with the distilled water, in case there is the slightest doubt about the contamination.

Everything used should be washed with distilled water, including the pipettes.

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3 years ago

A student chromatographs a mixture and after developing the spots with a suitable reagent he observes the following

Anika [276]

Rf value is the ratio of the distance traveled by the solute to that of the solvent front on the paper used in chromatographic separation.

From the image it is clear the distance traveled by solvent front = 7.3 cm

Distance traveled by the component -1 of the mixture = 1.4 cm

Distance traveled by the component -2 of the mixture = 3.0 cm

Distance traveled by the component -3 of the mixture = 4.5 cm

Distance traveled by the component -4 of the mixture = 6.5 cm

Rf value of component-1 = $\frac{1.4 cm}{7.3 cm} =0.192$

Rf value of component-2 = $\frac{3.0 cm}{7.3 cm} =0.410$

Rf value of component-3 = $\frac{4.5 cm}{7.3 cm} =0.616$

Rf value of component-4 = $\frac{6.5 cm}{7.3 cm} =0.890$

b) Samples can be separated from a mixture using chromatography as the relative affinities for the compounds towards the paper (stationary phase) and the solvent(mobile phase) are different. Each component spends different amounts of time on the stationary phase depending on it chemical nature. So, the components in a mixture can be separated based on their polarities and relative degrees of adsorption on the stationary phase.

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2 years ago

What is the oxidation number for Cl? 2 +1 -1 +2.

tamaranim1 [39]

Answer:

-1

Explanation:

3 0

2 years ago

Read 2 more answers

Objects that can bew seen only under magnification

timofeeve [1]

The answer is (D) microscopic. You can remember this, because the name is very close to "microscope," an instrument used to greatly magnify and observe tiny organisms and objects.

4 0

2 years ago

A concentration cell is constructed by using the same half-reaction for both the cathode and anode. What is the value of standar

Akimi4 [234]

Solution :

A cell that is concentrated is constructed by the same half reaction for the anode as well as he cathode.

We know,

In a standard cell,

the reduction half cell reaction is :

$Ag^+(aq)+e^- \rightarrow Ag(s) E^0 = -0.80 \ V$