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ankoles [38]
1 year ago
7

One of the compounds used to increase the octane rating of gasoline is toluene (right). Suppose 20.0 mL of toluene (d = 0.867 g/

mL) is consumed when a sample of gasoline burns in air.
(a) How many grams of oxygen are needed for complete combustion of the toluene?
Chemistry
1 answer:
Nadusha1986 [10]1 year ago
5 0

<u>54.12g </u>of oxygen are needed for complete combustion of the toluene.

<h3>What is toluene?</h3>

Toluene is a transparent, colourless liquid that, when heated to room temperature, turns into a vapour. A strong or sweet smell coming from toluene vapour indicates exposure.

Typically, toluene is combined with other solvents, chemicals, and substances like paint pigments. Many sectors and workplaces utilise products that may include toluene, such as paint, metal cleaners, and adhesives. Toluene is also present in fuels such as gasoline. Workers exposed to toluene may work with paints, varnishes, shellac, nail polish, glues & adhesives, rust inhibitors, or printing inks.

Toluene exposure in the workplace can occur by inhalation, skin contact, splashing into the eyes, and ingestion. Workers who are exposed to this kind of thing may become ill right away or experience repercussions later. Exposures to toluene have been investigated in auto repair, construction, nail salons, and printing facilities.

Learn more about toluene?

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6) What types of atomic orbitals are in the third principal energy
Bumek [7]

Answer:

Types of atomic orbitals present in the third principal energy are <u>s, p and d only .</u>

Explanation:

  • <u>OPTION A-:  s and p atomic orbitals -</u> these two orbitals are present in second principal energy level. Therefore , the option is incorrect.
  • <u> OPTION B-: p and d only -</u> This option is wrong as there is no such principal level energy where , s atomic orbital is absent .

  • <u>OPTION C-: s , p and d only -</u>these orbitals are present in<u> third principal energy level</u>. The third major level of energy has one orbital, three orbitals of p, and five orbitals of d, each of which can contain up to 10 electrons. The third stage thus holds a maximum of 18 electrons. This option is correct .
  • <u>OPTION D-: s , p, d and f only -</u>There is also a f sublevel at the <u>fourth and higher stages,</u> containing seven f orbitals, which can accommodate up to 14 electrons at most. Therefore, up to 32 electrons will hold the fourth level: 2 in the s orbital, 6 in the three p orbitals, 10 in the five d orbitals, and 14 in the seven f orbitals. This option is incorrect .

<u>Thus , the correct option is C (s , p and d only .)</u>

6 0
4 years ago
Determine the molecular formula of a compound having the empirical formula C9H17O and a molar mass of 847.56g/mol.
Arlecino [84]
 The  molecular  formula of a compound  having  the empirical  formula  C9H17O  is calculated as below

(C9H17O)n =847.56

{(12 x9 + 1 x17 + 1 x16)}n= 847.56

147 n = 847.56
divide bot
h side by 147
n= 6

(C9H17O)6 therefore the molecular formula = C54H102O6
7 0
4 years ago
What’s the electron configuration of an N-3 ion
Alla [95]

Answer:

1s2 2s2 2p6

Explanation:

The nitride ion(N^3-) is formed when nitrogen gains three electrons. Nitrogen possesses seven electrons in its orbitals and ordinarily has the electronic configuration; 1s2 2s2 2p3. However,being in group 15, nitrogen can accept three electrons to form the nitride ion and complete its octet of electrons. When this happens, three electrons are added to the nitrogen atom and the electronic configuration is now the same as that of Neon, its closest noble gas which is 1s2 2s2 2p6. Hence the answer given above.

Elements can accept or donate electrons in order to complete their octet structure in accordance to the octet rule which states that atoms and ions must possess eight electrons in their outermost shell in order to attain chemical stability. The reason for ion formation and chemical reaction is in order for species to attain the octet structure.

8 0
3 years ago
Which statements differentiate DNA and RNA? Select three options.
Morgarella [4.7K]

Answer:

A.) DNA is a double helix, and RNA is a single strand.



C.) DNA is involved only in transcription, and RNA is involved in both transcription and translation.



E.) DNA does not have uracil as a nitrogen base, but RNA does have uracil as a nitrogen base.











Explanation:

Have a great rest of your day
#TheWizzer

3 0
2 years ago
Read 2 more answers
Calculate the pH after 0.018 mole of HCl is added to 1.00 L of each of the four solutions. (Assume that all solutions are at 25°
Over [174]

Explanation:

Below are attachments containing the solution

7 0
3 years ago
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