How much would remain from a 120-g sample after 4 half-lives?

Answers

Answer 1

Answer: 7.5 grams

Explanation:

1 half life is the time it takes for a substance to be halved, (due to radioactive decay).

since 4 half lives have passed, we need to half the substance 4 times:

120/2 = 60

60/2 = 30

30/2 = 15

15/2 = 7.5 grams

This is an exponential decay trend, and you can use a function to graph it.

the base for that function would be 0.5


Related Questions

Do you think the correlation between higher education and job security will continue in the future? Why or why not?

This question is for Career Workshop

Answers

Answer:

Historically, there has been a strong correlation between higher education and job security. People with higher levels of education tend to have better employment outcomes, higher earnings, and more job stability than those with less education. This trend is likely to continue in the future, as technological advancements and globalization are expected to increase the demand for workers with specialized skills and knowledge.

In recent years, there has been growing concern about the impact of automation and artificial intelligence on the job market. Some experts predict that these technologies will lead to the displacement of many workers in low- and middle-skill jobs, while creating new opportunities for those with high levels of education and specialized expertise.

Additionally, the COVID-19 pandemic has had a significant impact on the job market, with many industries and occupations being disrupted or transformed. However, even during the pandemic, workers with higher levels of education have generally fared better than those with less education in terms of job security and income stability.

Therefore, while there may be changes and disruptions to the job market in the future, the correlation between higher education and job security is likely to continue. Those with higher levels of education will likely continue to have an advantage in the job market, as they possess the skills, knowledge, and adaptability necessary to thrive in an ever-changing economy.

There has been a strong correlation between higher education and job security. People with higher levels of education tend to have better employment outcomes, higher earnings, and more job stability than those with less education.

Why are the benefits of this trend?

This trend is likely to continue in the future, as technological advancements and globalization are expected to increase the demand for workers with specialized skills and knowledge.

In recent years, there has been growing concern about the impact of automation and artificial intelligence on the job market. Some experts predict that these technologies will lead to the displacement of many workers in low- and middle-skill jobs, while creating new opportunities for those with high levels of education and specialized expertise.

The COVID-19 pandemic has had a significant impact on the job market, with many industries and occupations being disrupted or transformed. However, even during the pandemic, workers with higher levels of education have generally fared better than those with less education in terms of job security and income stability.

Therefore, There has been a strong correlation between higher education and job security.

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could u help me pl/z

Answers

Answer:

sorry it is hard to answer the question when their is no question.

Explanation:

have a good day!

Why might going to college be a good financial decision, despite the cost?

This question is for Career Workshop

Answers

Answer:

In the long term it could make more money

Explanation:

It might be a good financial decision because you might get certificates and degrees you need to work at a job thats pays a lot of money. Going to College opens up many opportunities for more money.

which expression is equivalent to this

Answers

Answer:

Explanation:

I believe it's (B.)

All the following are similarities between fascism and communism except…

Answers

Answer:knowledge time

Explanation:why is school so hard?School is so hard because you need to learn knowledge.The way they they want you to learn is because you have to learn to have a good future life.this leads you to your success in the future.Once you understand the problem you gain knowledge.if you sit there and play games all day or just fool around,one thing I can tell you is that if you don’t learn it is your own problem,second thing is that when you have a parent and they waist there money on up you you should be grateful.Third thing, one of the most important thing is if your tired and you want to rest,think about this other grown people in the world work harder than you,and if you want to become one of the high classes with lots of money ,you better start working before your school life ends.this tells about the moral of why you should go to schools and pay attention..

2.
If f(x) = 2x+4, then what is the value
of ƒ(4) + f(6) ?

Answers

Answer:

f(x) = 2x + 4; f(4) + f(6)

= (2(4)+4) + (2(6)+4)

= 12 + 18

= 28

Explanation:

You are given the function, f(x)= 2x+4, and the x-values, x=4 and x=6, to input into the function. You then add together the values solved for from each function making your final answer 28.

HOWEVER, if the f (4) represents the derivative of f(x) where x=4 follow these steps:

f(x) = 2x + 4; f (x) = 2; f (4) + f(6)

These are the functions you have, including the derivative of f(x). You then plug in your numbers:

= (2) + (2(6) + 4)

= 2 + 18

= 20

Imagine you are a systematist who has discovered an unfamiliar animal

Answers

A scientist who focuses on the naming and classification of species is a systematist, commonly referred to as a taxonomist. Their work entails classifying and categorizing species according to their genetic make-up, morphological traits, and evolutionary relationships.

As a systematist what to do after discovering an unfamiliar animal?

An unfamiliar species has been found, and as a systematist, first course of action would be to carefully examine and record the animal's physical traits, behavior, habitat, and any other pertinent details that could assist me in determining its taxonomic classification.

In order to get their opinions and knowledge, then talk with colleagues and taxonomy specialists. Reaching out to experts on certain animal subspecies, such as mammal, bird, reptile, or insect researchers, may be one way to do this.

After that attempt to categorize the animal using recognized taxonomic systems using the information that had been at disposal. This could entail examining DNA samples, doing additional tests, contrasting its physical traits with those of known species, or some combination of these.

The work to record and publish the results in a scientific journal after determining the animal's taxonomic categorization and would also share this knowledge with other researchers in the field. This could increase our knowledge of biodiversity and have a significant impact on conservation initiatives meant to safeguard this recently discovered animal and its habitat.

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A student graduated from a 4-year college with an outstanding loan of $9898, where the average debt is $8550 with a standard deviation of $1847. Another student graduated from a university with an outstanding loan of $12,021, where the average of the outstanding loans was $10,305 with a standard deviation of $2132

Answers

The first student's loan is above average, since it is greater than the average loan amount of $8550. The second student's loan is also above average, since it is greater than the average loan amount of $10,305.

What is the loan ?

A loan is a type of financial agreement in which one party (the lender) provides a sum of money to another party (the borrower) in exchange for the borrower’s promise to pay back the sum with interest over a set period of time. Loans are a common form of financing for individuals, businesses, and other entities. They can be used to finance large purchases such as homes, cars, education, or medical bills. Some loans are even used to fund entrepreneurial endeavors. The terms of the loan dictate the interest rate, total amount due, repayment schedule, and other conditions agreed upon by the lender and borrower. Repayment is typically made in regular installments and can include a combination of principal and interest payments.

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1,000kcal are available at the 1st trophic. State the amount of kcal passed on to the
secondary consumer?

Answers

Answer:

Im needing the answer to this to lol. Can someone help us out please

y=x-3
y = x + 6 With solution or not?

Answers

no solution


please check the image! :)

For questions 1-2 simplify the rational expression p^2-4p-32/p+4

Answers

Answer:

Explanation:

[tex]p^{2} -4p-32 = p^{2} -8p+4p-32 = p(p-8)+4(p-8)=(p-8)(p+4)\\\\[/tex]

[tex]\frac{(p-8)(p+4)}{(p+4)} = p-8[/tex]

The answer is p-8

Find the consumer price index or cost living by aggregate method or family budget method

Answers

The Consumer Price Indexx (CPI) is typically calculated using the aggregate method, which measures the average change in prices for a fixed basket of goods and services over time.

What is a Family Budget Method?

The Family Budget Method, on the other hand, is a method used to estimate the minimum income necessary for a family to meet its basic needs. It involves identifying the typical expenses of a family, such as food, housing, transportation, healthcare, and other necessities, and estimating the cost of those expenses in a given geographic area.

While both methods are used to measure changes in the cost of living, the CPI is a broader measure that reflects changes in prices for all consumers, while the Family Budget Method is more focused on the specific expenses of a particular type of household.

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