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3 years ago

What is back titration?

Chemistry

1 answer:

Yakvenalex [24]3 years ago

3 0

Answer:

Back titration is a titration done in reverse; instead of titrating the original sample, a known excess of standard reagent is added to the solution, and the excess is titrated.

I hope it's helpful!

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Give the group number and general electron configuration of an element with each electron-dot symbol:

MatroZZZ [7]

The group number of (a) is VA(15) and electronic configuration is 1s2 2s2 2p3 . the group number of (b) is IVA(14) and the electronic configuration is 1s2 2s2 2p2 .

What is electronic configuration ?

it shows the distribution of electrons in the atomic orbitals .

it follows a standard notation of s, p, d, f atomic orbitals in which electronic distribution of an atom occurs .

it has standard notation method as well as condensed electron configuration .

it is useful in determining the valency of an element .

it is useful in predicting the properties of a group of elements .

<h3>What is condensed electron configuration ?</h3>

It contains the symbol of the nearest , smaller noble gas in the square brackets and then the symbols of the occupied orbitals which contains valance electrons .

Example of condensed electron configuration is given by ,

in case of iron the electronic configuration is 1s2 2s2 2p6 3s2 4s2 3d6 .

Thus , the condensed electron configuration of iron is [Ar] 3d6 4s2 .

Learn more about electronic configuration here :

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1 year ago

Which organism on the food chain is a carnivore? fungus grass grasshopper spider

Lady_Fox [76]

Answer:

I think it would it spider

Explanation:

Spider catch there meals in there web then suck the blood out after it wraps them up in webing

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3 years ago

Describe two ways you could demonstrate an acceleration of 2 meters per second squared?

BaLLatris [955]

Answer:

You could do 88 metars

Explanation:

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3 years ago

Read 2 more answers

A hot object will have ___ kinetic energy

Masja [62]

Answer:

More/ Alot? I think is what you are looking for?

Explanation:

It will definitely have some but I'm not sure on what word you are looking for.

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3 years ago

Fill in the missing information:

Neko [114]

Answer: 1. Complete Nuclear Symbol : $_{22}^{48}{Ti^{4+}}$

2. Atomic number : 22

3. Mass number : 48

4. Charge : 4 +

Explanation:

Atomic number is equal to the number of protons.

Mass number is the sum of number of neelectrons. utrons and number of protons.

Given : no of protons = 22 , thus atomic number = 22

Mass number = number of neutrons + number of protons

Mass number = 26 + 22 = 48

Also for a neutral atom , the number of protons is equal to the number of electrons. But here electrons are 4 less than protons, which means the atom has lost 4 electrons and thus will have a charge of 4+.

The atomic number is specific to an element, and the element with atomic number 22 is Titanium (Ti). The representation is $_{22}^{48}{Ti^{4+}}$

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3 years ago

What is back titration?​

What is back titration?