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AlladinOne [14]
3 years ago
13

Why is it important that there be no gaps around the edges of the filter paper during a vacuum filtration? explain your reasonin

g?
Chemistry
1 answer:
tiny-mole [99]3 years ago
4 0
<span>Gaps around the edges would permit solids from coming through with the solvent that is being extracted. Having a complete seal would keep all solids on the filter paper, so it can be collected for further purification.</span>
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Can I+ (the iodine cation) becalled a Lewis base?<br> Fullyexlplain your answer.
Alenkinab [10]

Answer: No I+ cannot be called a Lewis base.

Explanation:

According to Lewis Theory, it defines an acid as an electron-pair acceptor and a base as an electron-pair donor.

In terms of Lewis basicity, Iodide ion (anions) has the more readily available lone pair electrons for donation since iodide ion is less electronegative .

With the help of the net electronic structure one can understand the answer of the question, because we need to study the I+  ion (cation) structure.

Lewis acid is therefore any substance, that can accept a pair of nonbonding electrons. 

From the picture below I+ is most likely ready to accept electrons not to give from it 5s orbital to become stable.

7 0
3 years ago
The thikness of an eye lash is 15 mm how much this will be in meters ? write it in scientific Notation.
deff fn [24]

Answer

1.5x10^-3 m

24.91x10^5

Explanation:

15 millimeters

- 1 mm = .0015

exponent indicates which way the decimal moved and to how many places

we moved the decimal backwards (negative) 3 spaces

2491 km= 2491000 m

exponent indicates which way the decimal moved and to how many places

we moved the decimal forwards (positive) 5 spaces

2491000.00 --> 24.91000

6 0
4 years ago
Which of the following is true about indicators?
Darina [25.2K]

A indicator is a weak organic acid or a base which has shows different colors in acidic and basic mediums. The color change occurs when the weak acidic or basic indicator dissociates to give its respective conjugate base or conjugate acid.

Therefore the correct option would be Indicators are weak acids or bases.

7 0
4 years ago
Read 2 more answers
A chemist is using a solution of hno3 that has a ph of 3.75. what is [h ] for the solution?
NemiM [27]

\text{pH} = -\log[H^{+}]\\\\\implies \log[H^{+}] = -\text{pH}\\\\\implies [H^{+}] = 10^{-\text{pH}}}\\\\\implies [H^{+}] =10^{-3.75}=0.00017~M

5 0
2 years ago
Which of the following elements will have its valence electrons represented as in Figure A?
Gemiola [76]
D
Bc all of them in the 6th columns
5 0
3 years ago
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