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Alex
3 years ago
12

In an experiment to find the concentration of calcium hydroxide in limewater , 25.0 cm3 of limewater needed 18.8 cm3 of 0.0400 m

ol/dm3 hydrochloric acid to neutralise it.
Chemistry
1 answer:
Andre45 [30]3 years ago
6 0

Answer:

0.01504 mol/dm3

Explanation:

Calcium Hydroxide - Ca(OH)2

Hydrochloric acid - HCl

The reaction between both is given as;

2HCl   +   Ca(OH)2   --> CaCl2  + 2H2O

2   :  1

The relationship between the concentration and volume is given as;

CaVa  /  CbVb = na  /  nb

where a = acid (HCl) and b = base Ca(OH)2

Inserting the values;

0.04 * 18.8  /  (Cb * 25)  =  2 / 1

0.752 / 25Cb = 2

Cb = 0.752 / 50  = 0.01504

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Magnetism is believed to be caused by the alignment of small, numerous sub-units called
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Answer:

Magnetism is believed to be caused by the alignment of small, numerous sub-units called : <em><u>Domains</u></em>

<em><u></u></em>

Explanation:

Domains : A magnetic domain is the region in which in which magnetic field of the atoms are grouped together and aligned.

  • In unmagnetized material all the magnetic Domains  point in different direction.
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5 0
2 years ago
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Alisiya [41]

Answer:

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Explanation:

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2 years ago
How many molecules are in the following formula?<br> 2(NH4)3PO4
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7 0
3 years ago
Can someone help me please and please show work
FinnZ [79.3K]

Answer:

Average of the trial is: 288.50 C

Percent Error: 3.83%

Explanation:

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4 0
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An example of a structure that contains amide is the nylon, paracetamol, and dimethylformamide.

<h3>What is an amide?</h3>

An amide is defined as the organic chemical compound which is a functional group that contains carbonyl group bonded to a nitrogen or any compound containing this functional group.

Typical examples of compounds that contains an amide group include the following:

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brainly.com/question/25835424

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1 year ago
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