Answer:
5.1 Crystal structure and habit.
5.2 Hardness.
5.3 Lustre and diaphaneity.
5.4 Colour and streak.
5.5 Cleavage, parting, fracture, and tenacity.
5.6 Specific gravity.
5.7 Other properties.
Explanation:
2-methyl pentane
At first, we need to select a long chain.
Then, we should number that chain (Numbering will start from that side from which attachment is closer)
Then, For IUPAC name, at first we write the position at which substituent is attached then, name of subsitent and finally the chain name and suffix.
Here,
position of substituent = 2
name of substituent = -methyl
chain name = pent
suffix = -ane
Then,
IUPAC name is 2-methyl pentane
<span> Endothermic</span>. The reaction photosynthesis is an endothermic type of reaction since it needs light energy in order for the whole reaction to process without this energy no reaction would happen. hope this helps!
Answer:
Empirical formula: CH₂
Explanation:
We need to find the empirical formula of a compound that has carbon and hydrogen.
To find the empirical formula of any compound, if we have the mass or mass percent, we should follow 3 steps:
<u>1. Calculate the moles, dividing by the atomic weight.</u>
The atomic weight for carbon and hydrogen are 12 g/mol and 1 g/mol, so, doing the division we have:
C = 85.5 / 12 = 7.125
H = 14.3 / 1 = 14.3
<u>2. Determine the number of atoms of each element in the formula</u>
To do this, we just divide the previous moles by the lowest quantity we obtain. In this case, the carbon:
C = 7,125 / 7,125 = 1
H = 14,3 / 7,125 = 2
This means we have 1 atom of carbon and 2 atoms of hydrogen.
<u>3. Write the empirical formula with the previously obtained atoms</u>
Now that we obtained the atoms of each element, we just write the empirical formula with these numbers:
C₁H₂ but we can neglect the number one so:
<h2>
Empirical formula: CH₂</h2>
Hope this helps