The decay constant is i 0.1155, and there would be 16 mg left after 24 hours.
The relationship between the half-life, T₀.₅, and the decay constant, λ, is given by
T₀.₅ = 0.693/λ.
Solving for λ, we will multiply both sides by λ first:
(T₀.₅)(λ) = 0.693
Since we know the half life is 6 hours, this gives us:
6λ = 0.693
Dividing by 6, we have
λ = 0.693/6 = 0.1155.
The decay constant will be k in our decay formula, and N₀, the original amount of substance, is 250:
N(24) = 250e^(-0.1155*24) = 15.6 ≈ 16
Answer:
a6=69
Step-by-step explanation:
Answer:
I think it's the last one. Sorry if I'm wrong
Answer:
first step
convert 180m and 1 cm in mm that is 180000mm and 10mm
then
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Answer:
value of x = -2
value of y = 1
Step-by-step explanation:
here's the solution :-
the given equations are :
=》-4x - 4y = 4
=》6x + 4y = -8
adding both equations, we get ;-
=》-4x - 4y + 6x + 4y = 4 - 8
=》2x = -4
( positive and negative 4y get eliminated )
=》x = -4 / 2
=》x = -2
plugging the value of x in equation 2 we get ,
=》6x + 4y = -8
=》(6 × -2) + 4y = -8
=》-12 + 4y = -8
=》4y = -8 + 12
=》y = 4 / 4
=》y = 1