Answer:
Rate constant at 725 K is 
Explanation:
According to Arrhenius equation for a reaction-
where 
and 
are rate constants of reaction at 
and 
temperatures (in kelvin) respectively.
is activation energy of reaction.
Here = 600 K , = 
= 725 K, = 262 kJ/mol and R = 8.314 J/(mol.K)
So plugin all the values in the above equation-
So, =
Hence rate constant at 725 K is
Answer:
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Explanation:
Importance of symbols and Formulae :
Symbols and formulae of substance gives a lot of information like. Types of elements present in the compound. E.g. (H20 is made of two elements hydrogen and oxygen). Number of each kind of atoms in one molecule.
Answer:
5.68 × 10⁴ mL = 56.8 L
Explanation:
Volume is defined as the amount of three-dimensional closed space. The SI unit of volume is cubic metre which is denoted by the symbol m³.
According to the metric system, other units of volume include: litre (L), millilitre (mL) and cubic centimetre (cm³).
Since, 1 mL = 0.001 L = 10⁻³ L
Therefore, 5.68 × 10⁴ mL = 5.68 × 10⁴ × 10⁻³ L = 5.68 × 10 L = 56.8 L
5.68 × 10⁴ mL = 56.8 L, has three non-zero significant figures.
