1. Radium decomposes at a rate proportional to the amount present. In 100 yrs, 100 mg of radium decompose to 96 mg. What is the half life of radium?

Q: 2. The half-life of a radioactive substance is 4000 years. How long will it take for the substance…

A: The half life of the radioactive decay is  years.

Q: 1. A radioactive material has a half-life of 200 years. my centuries are needed to dissipate its…

A: We know formula for the half life of a radioactive material is  Nt=N012tt1/2 Where N(t) is the…

Q: 56.7 × (0.97612)t grams. How long before half of the initial amount remains?

A: The amount of a sample of radioactive strontium-90 remaining after t years is given in file.

Q: The half-life of Radium-226 is 5 years. How much of an initial 170 g sample will remain after 22…

A:

Q: The half-life of Radium-226 is 6 years. How much of an initial 178 g sample will remain after 23…

A: Initial amount of Radium-226 is A0 = 178 g The half life of Radium-226 is t12 = 6 years Total Time,…

Q: 4) Use the situation to answer the question. Iodine-131 has a half-life of 8 days. How much of the…

A:

Q: The half-life of radium in a piece of lead is 1600 years. What percentage of the original amount of…

A: Given that, the half-life of radium in a piece of lead is 1600 years. Note that, the formula for…

Q: Radioactive cesium-137 has a half-life of 30.17 years. How much of an initial amount of 1,000…

A: If N0 is the initial amount and t is the number of years then equation of decay  is given by…

Q: 2. Assume that radium disintegrates/decomposes at a rate proportional to the amount present. If 100…

A:

Q: Radium has a weight of 1.5 and a half life of 6 years. What is its weight after 3 years?

A:

Q: 2. The half-life of a radioactive material is 22.52 hours. If you measure 88.95 grams of the sample…

A: Half-life is the time required for a quantity to reduce to half of its initial value. The term is…

Q: Carmen works in a laboratory that uses radioactive substances. The laboratory received a shipment of…

A: Given that a radio active substance, radon was initially 300g after 16 days remaining amount is…

Q: The half-life of Carbon-14 is 11 years. How much of an initial 115 g sample will remain after 42…

A:

Q: Radium decomposes at a rate proportional to the amount present. In 100 yrs, 100 mg of radium…

A: Initial radium quantity Ni = 100 mg after t = 100 years N = 96 mg

Q: The half-life of Plutonium-241 is 9 years. How much of an initial 159 g sample will remain after 38…

A:

Differential Equations

Have you ever observed the movement of the satellites and rockets or how the planets go around the sun in their orbits? How will you determine their motion? Definitely they follow some scientific laws and these kinds of problems are framed as differential equations.