Answer:
Explanation:
In Polystrene, the molecular formula for the repeat unit = 
;
and the atomic weights of Carbon C = 12.01 g/mol
For Hydrogen, it is 1.01 g/mol
Hence, the repeat unit molecular weight is:
m = 8 (12.01 g/mol)+8(1.01 g/mol)
m = 96.08 g/mol + 8.08 g/mol
m = 104.16 g/mol
The degree of polymerization = no-average molecular weight/repeat unit molecular weight.
Mathematically;
I believe that sugar is a compound because there are elements that make up sugar
Answer:
0.2g of hydrogen is needed to produce 1.80g of water
Explanation:
No. of moles of water
From given values,
Weight of water 
Molecular weight of water 
No. of moles of water
From equation, it is clear that 2 moles of water can be formed by 2 moles of 
Hence, 0.1 mole of water can be formed from 0.1 mole of
Now,
No. of moles of 
