Answer:
10 Kelvin
Explanation:
this is so simple...
if you want to raise the temp from 270K to 280K just add 10K
Answer:
Molecular formula = C₆H₁₂O₆
Explanation:
Given data:
Mass of hydrogen = 31.7 g
Mass of carbon = 283.4 g
Mass of oxygen = 377.4 g
Molar mass of compound = 176.124 g/mol
Molecular formula = ?
Solution:
Number of gram atoms of H = 31.7 / 1.01 = 31.4
Number of gram atoms of O = 377.4 / 16 = 23.6
Number of gram atoms of C = 283.4 / 12 = 23.6
Atomic ratio:
C : H : O
23.6/23.6 : 31.4/23.6 : 23.6/23.6
1 : 1.33 : 1
C : H : O =3 (1 : 1.33 : 1
)
Empirical formula is C₃H₄O₃.
Molecular formula:
Molecular formula = n (empirical formula)
n = molar mass of compound / empirical formula mass
Empirical formula mass = 3×12+4+3×16 = 88
n = 176.124 / 88
n = 12
Molecular formula = n (empirical formula)
Molecular formula = 2 (C₃H₄O₃)
Molecular formula = C₆H₁₂O₆
Answer : (a) 
is a decomposition reaction.
Explanation :
(a) is a decomposition reaction.
- Decomposition reaction : It is a type of chemical reaction in which a single compound decomposes into two or more compounds.
(b) 
is a displacement reaction.
- Displacement reaction : It is a type of reaction in which a most reactive element displaces the least reactive element in a compound.
(c) 
is a combination reaction.
- Combination reaction : It is a type of reaction where two or more compounds combine to form a single compound.
(d) 
is a combustion reaction.
- Combustion reaction : It is a type of reaction where a hydrocarbon react with the oxygen to produced carbon dioxide and water.
Therefore, option (a) is a decomposition reaction.
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