Answer:
k = 6.31 x 10⁻³ min⁻¹
Explanation:
The equation required to solve this question is:
k = 0693 / t half-life
This equation is derived from the the equation from the radioctive first order reactions:
ln At/A₀ = -kt
where At is the number of isoopes after a time t , and A₀ is the number of of isotopes initially. The half-life is when the number of isotopes has decayed by a half, so
ln(1/2) = -kt half-life
-0.693 = - k t half-life
t half-life = 109.8 min
⇒ k = 0.693 / t half-life = 0.693 / 109.8 min = 6.31 x 10⁻³ min⁻¹
Answer: False
Explanation: As additional scientific evidence is gathered, a scientific theory may be modified and ultimately rejected if it cannot be made to fit the new findings; in such circumstances, a more accurate theory is then required.
Hoped this helped!!!
Answer:
1 mole
Explanation:
Given parameters:
Mass of sulfur = 32.066g
Unknown:
Number of moles of sulfur = ?
Solution:
The number of moles of sulfur can be determined using;
Number of moles =
Molar mass of sulfur = 32g/mol
Number of moles = = 1 mole
Answer:
Glucose also called(Energy)
Answer:
Three lithium and one nitrogen atoms