You are experimenting with a radioactive sample of polonium at the en of 14.0 minutes exactly 1/16 of the polonium remains. what is the corresponding halflife of polonium

t(1/2) = 3.5 min

Explanation:

From A = A₀e⁻ᵏᵗ => k = ln(A/A₀)/-t = [ln(1/16)/-14]min⁻¹ = 0.198 min ⁻¹

=> t(1/2) = 0.693/k = (0.693/0.198)min = 3.5min

answer: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.