if a sample contains 20g of an isotope that has a half life of 1000 years how much will be left after 2000 years

Answers

Answer 1
5 grams will be left. After the first 1000 years, there will be half of 20 left, or 10. After 2000 years, half of 10 will remain, which is 5.
Answer 2

After 2000 years, there will be 5g of the isotope remaining.

What is an isotope?

If an isotope has a half-life of 1000 years, it means that after 1000 years, half of the original sample will have decayed. After another 1000 years (2000 years total), half of the remaining sample will have decayed, and so on.

To calculate how much of the sample will be left after 2000 years, we can use the following formula:

[tex]N = N_{0} * (1/2)^ (t/T)[/tex]

where:

N = the amount of the isotope remaining after time t

N0 = the initial amount of the isotope

t = the time that has elapsed

T = the half-life of the isotope

Plugging in the values from the problem, we get:

N = 20g * (1/2)^(2000/1000)

N = 20g * (1/2)^2

N = 20g * 1/4

N = 5g

Therefore, after 2000 years, there will be 5g of the isotope remaining.

Learn more about isotope, here:

https://brainly.com/question/3270214

#SPJ3


Related Questions

Which type of sensory receptors monitor position and movement of the body?

A. Photoreceptors
B. Chemoreceptors
C. Proprioceptors
D. Exteroceptors

Answers

The answer is Proprioceptors.                             

                         

C is the correct answer my guy

why does individual commit crime?​

Answers

People commit crimes for many different reasons. whether it is for the excitment and thrill of it or whether they were forced to or peer preasured on by another person. Maybe they robbed a bank cause they needed money or they were under the influence of drugs or alchohol

The causes of crime are complex. Poverty, parental neglect, low self-esteem, alcohol and drug abuse can be connected to why people break the law. Some are at greater risk of becoming offenders because of the circumstances into which they are born.

Rachal Corporation produces and sells a single product whose selling price is $150.00 per unit and whose variable expense is $57.00 per unit. The company's monthly fixed expense is $381,300.
Required:
a. Assume the company's monthly target profit is $9,300. Determine the unit sales to attain that target profit. Show your work!
b. Assume the company's monthly target profit is $18,600. Determine the dollar sales to attain that target profit. Show your work!

Answers

Answer:a) if the company's monthly target profit is $9,300, 4,200 units sales is needed

b) if the company's monthly target profit is $18,600, 4,300 units sales is needed

Explanation:

Using  The Contribution Margin Approach:  

Contribution Margin = Sales expense - variable expense

=$150.00 - $57.00

=$93

Contribution Margin Ratio= Contribution Margin/ sales expense  x 100

=93/150 x 100

= 62%

Assume the company's monthly target profit is $9,300.

A) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin  ratio]

= ($381,300. + $9,300) ÷ 0.62

$390,600 ÷ 0.62

= $630,000

No. of units to be sold =Sales to attain the target profit/ selling price

$630,000/$150.00

=4,200 units

Assume the company's monthly target profit is $18,600

B) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin  ratio]

= ($381,300. + $18,600 )÷ 0.62

$399,900 ÷ 0.62

= $645,000

No. of units to be sold =Sales to attain the target profit/ selling price

$645,000/$150.00

=4,300 units

A brown mouse is crossed with a heterozygous black mouse if the mother has a litter of four what are the chances of one of them being brown

Answers

Answer:

I used a Punnet Square to determine what percentage of 1 of the mice would be brown.

Explanation:

Scientific studies show that identical twins who were separated at birth and raised in different homes may vary in height, weight, and intelligence. The most probable explanation for these differences is that

Answers

Answer:

Their height and weight will differ depending on there diet, one might be smarter than the other naturally but as their were in different home they will have different ways of comprehending it

Explanation:

I hope that helped

Identical twins who were separated at birth and raised in different homes may vary in height, weight and intelligence

Why difference is observed in height and weight?It is because of the different diet they are taking.The difference can be due to both quality and quantity.It is also because of exercise.The twin with good diet and exercise has appropriate weight.While the one with sedentary habit is over-weight.Why is the difference observed in intelligence?The intelligence not only depends on genetics it also depends on environment.It depends on factors like education, surrounding influences, etc.

To learn more about education, height, weight, and intelligence here,

https://brainly.com/question/9944825

#SPJ2

Other Questions
Evaluate the expression for x = 1.7. Enter your answer in the box.x2 + 3x If I accumulate two gallons of SHlT from an undisclosed location and I sell one gallon but in the process get two more gallons how many will I have left On a coordinate plane, a line goes through points (1, 9) and (4, 3).What is the slope of a line that contains the points (1, 9) and (4, 3)? In the paragraph box below, write four original sentences, one for each of the sentence functions discussed above.declarativeimperativeexclamatoryinterrogative Help asapA local hamburger shop sold a combined total of 555 hamburgers and cheeseburgers on Saturday. There were 55 more cheeseburgers sold than hamburgers. How many hamburgers were sold on Saturday? Luis had 4 boxes of party favors. One full box contained 16 bags of favors and each bag had 5 items in it. What is the total numberitems that Luis had in his possession?O A. 360B. 320O C. 170OD. 7.5 HELP!! Dead poet society movie Dead Poets Writing AssignmentDirections: Describe in detail what Mr. Keating was trying to teach hisstudents and the obstacles Mr. Keating encountered while trying to do so.Make sure to write your response in complete sentences. Find the 39th term of the following sequence. 17,11, 5, -1 Determine an expression for dydx given that x = sin3(t)andy = cos3(t) What is Liesl's viewpoint in "A Letter from the Atlantic"?She feels irritated because she doesn't want to be around her family or the other emigrants on the ship.She feels terrified because she doesn't know what to expect on Ellis Island and knows it won't be like Hamburg.She feels thrilled because she wants to leave Hamburg and wishes she could shorten the duration of the voyage.She feels conflicted because she's excited about what awaits her but homesick for the life in Germany she left behind. Can i get some help please Divide (-3x^2 - 9x) (x + 3) please explain/show work! Write an equivalent addition expression to : -10 (-4) riddleWhat runs around the whole yard without moving? who is the intended audience for this story ? ( children, teen or adult ? ) what evidence helps identify the audience? ( options seen in picture ) What is the volume of a cylinder with a radius of 1.5 inches and a height of 9 inches round your answer to the nearest hundredthWhat is the volume of a cylinder with a radius of 1.5 inches and a height of 9 inches round your answer to the nearest hundredth Factor by Grouping 2y2 + 7yz + 5z2 At a food festival, 3/8 of the dishes were from china. Another 12.5% of the dishes were from japan. What percent of the dishes were from the other countries? what is displayed as a result of executing the following code segment? x < - - 2y < - - X * 4z < - - X * Yx < - - X + Yz < - - z + ( x - y) * 3DISPLAY ( x + y + z)select one answerA - 72B - 40C - 8D - 54 Part of world map showing East Asia with labels India, Nepal, Bhutan, Sri Lanka, Singapore, Malaysia, Cambodia, Vietnam, Thailand, Laos, Myanmar, China, Mongolia, North Korea, South Korea, Japan, and Taiwan. Latitudes at fifteen, thirty and forty-five degrees are indicated. Longitudes at seventy-five through one hundred thirty-five degrees are indicated.Item 5He left his princely life to solve the problem of human pain and suffering. He gave us the Eightfold Noble Path as a way to find Nirvana.Which religious leader is described? Siddhartha Gautama Qin Shi Huangdi Indra Confucius