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ddd [48]
3 years ago
13

SCRIE FORMULA ŞI DENUMEŞTE SUBSTANŢA

Chemistry
1 answer:
butalik [34]3 years ago
8 0

Answer:

raspunde in explicatie

Explanation:

În această întrebare, trebuie să scriem formula și să numim compusul.

A. 1 atom de azot și 3 atom de hidrogen Aceasta este NH3 și numele este amoniac

b. 2 atomi de hidrogen, 1 atom de carbon și 3 atomi de oxigen Adică H2CO3 Trioxocarbonat (iv)

C. 1 atom de carbon și 2 atomi de oxigen CO2 Oxid de carbon (iv)

d. 1 atom de calciu și 1 carbonat de grupă Aceasta este CaCO3 Adică trioxocarbonatul de calciu iv

e. Pb (II) și un carbonat Aceasta este PbCO3 Acesta este carbonatul de plumb (ii)

f. Grupa de cobalt 2 și fosfați

adică

Co3(PO4)2

Cobalt (ii) tetraoxofosfat (v)

g.Arsenic și radical sulfurat Adică As2S3 Trisulfida de arsen

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How many milliliters of 0.25M H2SO4 can be prepared from 57 mL of a 3.0M solution of H2SO4?
DochEvi [55]

Answer:

Why ? Because 1 molecule of H2SO4 gives 2 H+ ions per molecule while only one H+ ion is required to neutralize 1 molecule of KOH. So, 1 molecule of H2SO4 can neutralize 2 molecules of KOH. Hence, we would require 525 ml of 0.03 M H2SO4 to neutralize 525 ml of 0.06 M KOH. How will we prepare 525 ml of 0.03 M H2SO4 ?

Explanation:

Now, we have 0.025 M H2SO4 and we do not know how much volume we have.

We will use the standard N1 X V1 = N2 X V2 for this calculation.

N1=0.025 M; V1=unknown; N2=0.03 M and V2=525 ml.

So V1= (0.03 X 525)/(0.025) = 630 ml.

5 0
3 years ago
Rank the following groups in order of decreasing priority: A. bondCtbondCH B. bondCH(CH3)2 C. bondCH2CH3 D. bondCHdbondCH2
Lelu [443]

Answer:

(CH2)3CH3 > CH2CH2CH3 > CH2CH3 > CH3

Explanation:

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Priority increases as the number of CH2 group increases and vice versa, as such the one with more CH2 group will be the highest priority and the least compound with the small CH2 group attached, will have the smallest priority.

The arrangement is as follows ; (CH2)3CH3 > CH2CH2CH3 > CH2CH3 > CH3

7 0
3 years ago
How many of the electrons in a molecule of ethane are not involved in bondind​
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2 years ago
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Answer:

People can introduce their own biases into an experiment.

Explanation:

4 0
2 years ago
The amount of kinetic energy an object has depends upon which of the following factors?
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