josetheghost6290 josetheghost6290

21-09-2019
Physics

contestada

A 12.65 g sample of a radioactive substance is allowed to decay for 17.22 min. At that time, the sample weighed 3.115 g. What is the half-life for this substance?

Respuesta :

dullard dullard

21-09-2019

Answer:

8.61 min

Explanation:

original mass= 12.65

first half life = 12.65/2 = 6.325

second half life = 6.325/2 = 3.1625

Note : 3.1625 is the closest to the value (3.115) given so we work with it

total time for decay =17.22

therefore two decays = 17.22/2= 8.61

Answer Link

Otras preguntas

What are some consideration the company and Hr shpula be aware of making changes

Read "A Dozen Facts About the Economics of the US Health-Care System" from the Brookings Institute on the economics of the U.S. health care system, and discuss

Often times the probability distribution of a Random Variable of interest is unknown. In such cases simulation can be a useful tool to estimate the probability

Use a calculator to solve the following equation in the interval [0, 20 correct to five decimal places. sin? 4sin^2 (x) - 2 = 0 a. 0.78540, 2.35619, 3.92699, 5.

**WILL GIVE BRAINLIEST + AN ADDITIONAL 50 POINTS IF YOUR ANSWER IS CORRECT** WRITE A CLEAR, SIMPLE ANSWER** What were the effects of exchanges at Tenochtitlan/M

Find the function value, if possible. (If an answer is undefined, enter UNDEFINED.) f(x)= { -3x-3, x < -1 { x^2+2x-1, x >= -1 (a) f(-4) (b) f(-1) (c) f(1)

The density of aluminum is 2700 kg/m^3. If transverse waves propagate at 38 m/s in a 4.6 mm diameter aluminum wire, what is the tension on the wire? a 39 N b 65

A statistics adjunct wants to understand how many students in their class will pass. Let X be the number of students in the class who pass. The adjunct has 30 s

iven the matrices A and B shown below B- A . [ A = 0 over 0 1 over 1 -1 over 0 ] [ B= 0 over 4 -3 over -4 1 over 3 ]

Please help me sorry