1.An ancient discovery found a sample, where 75% of the original carbon (C14\text{C}^{14}C14) remains. Then the age of the sample is [T1/2(C14)=5730T_{1/2}(\text{C}^{14}) = 5730T1/2(C14)=5730 years, ln0.5=−0.7\ln 0.5 = -0.7ln0.5=−0.7,\ ln(0.75)=−0.3\ln(0.75) = -0.3ln(0.75)=−0.3]a.230023002300 yearsb.245624562456 yearsc.254625462546 yearsd.345634563456 yearsLogin to continueOnly logged in users canattempt or see the solution.
