Answer:
using the formula of numbers of molecules
Explanation:
mass /Mr 44/44=1 molecules of carbon dioxide present
(Mr of carbon dioxide is ( 2*16)+12=44
Now time by Abogadros constant 1*6.002*10^23
molecules of CO2 are present = 6.002*10^23
Answer: 2,5-dimethyl octane.
Explanation:
The basic rules for naming of organic compounds are :
1. First select the longest possible carbon chain.
2. The longest possible carbon chain should include the carbons of double or triple bonds.
3. The naming of alkane is done by adding the suffix -ane, alkene by adding the suffix -ene, alkyne by adding the suffix -yne and carboxylic acid by adding the suffix -oic acid.
4. The numbering is done in such a way that first carbon of double or triple bond gets the lowest number.
5. The carbon atoms of the double or triple bond get the preference over the other substituents present in the parent chain.
6. If two or more similar alkyl groups are present in a compound, the words di-, tri-, tetra- and so on are used to specify the number of times of the alkyl groups in the chain.
Thus the name for straight chain made of 8 carbons with groups on the second and fifth carbons will be 2,5-dimethyl octane.
Answer:
The final volume is 6.4 L.
Explanation:
Dilution is reducing the concentration of a chemical and is achieved by adding more solvent to the same amount of solute. In other words, dilution is the procedure that is followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.
In a dilution the amount of solute does not vary, and as only more volume (and mass) of solvent is being added, the concentration of the solute decreases.
In a dilution the expression is used:
Ci*Vi = Cf*Vf
where:
- Ci: initial concentration
- Vi: initial volume
- Cf: final concentration
- Vf: final volume
In this case:
- Ci: 8 M
- Vi: 2 L
- Cf: 2.5 M
- Vf: ?
Replacing:
8 M* 2 L= 2.5 M* Vf
Solving:
Vf=6.4 L
<u><em>The final volume is 6.4 L.</em></u>
Answer:
Ne
Explanation:
Atomic number of Ne is 10.
Electronic configuration of Ne:
Octet of Ne is complete . Element having complete octet are stable and behave ideal gas.
and are reactive and hence, does not behave as ideal gas.