This is an incomplete question, here is a complete question.
The rearrangement of methyl isonitrile (CH₃NC) to acetonitrile (CH₃NC) is a first-order reaction and has a rate constant of 5.11 × 10⁻⁵ s⁻¹ at 472 K. If the initial concentration of CH₃NC is 3.00 × 10⁻² M :
How many hours will it take for the concentration of methyl isonitrile to drop to 14.0 % of its initial value?
Answer : The time taken will be, 10.7 hours
Explanation :
Expression for rate law for first order kinetics is given by:

where,
k = rate constant = 
t = time passed by the sample = ?
a = let initial amount of the reactant = 100
a - x = amount left after decay process = 14 % of 100 = 14
Now put all the given values in above equation, we get


Therefore, the time taken will be, 10.7 hours
Answer:
The correct answer is option B.
Explanation:
Significant figures :These are figures in a number which expresses the value of the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
Significant digits in the volume measurement 0.010 mL are:
= 2 significant figures
- All non-zero numbers are always significant.
- All zero’s preceding the first integers are never significant.
- All zero’s after the decimal point are always significant.
Answer:
+3·F
Explanation:
The number of objects in the given system = 2 objects
The charge on each object are; q₁ = -Q, q₂ = -Q
The force acting between the objects = +F
The distance between the objects = 2·d
The formula for the force acting between two charged particles is given as follows;

Therefore, we get;

By tripling the charge, q₁, on the first object, we get;
q₂ = 3 × (-Q)

Therefore, the new force between them, F₂ = +3·F
When electrons are shared equally, the result is a metallic bond.
0.36moles
Explanation:
Given parameters:
Mass of aluminium = 9.592g
Unknown:
Number of moles of Aluminium = ?
Solution:
The mass of an atom is related to the number of moles.
The number of moles of an atom is the size of a substance that contains the avogadro's number of particles.
it is related to the number of moles using the expression below;
Number of moles = 
Molar mass of aluminium= 27g/mol
Number of moles =
= 0.36moles
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Number of moles brainly.com/question/1841136
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