the original amount of po-239 was 5725 g, How much would be remaining after 4 half lives

Answers

Answer 1

Answer:

correct love

Explanation:

your right


Related Questions

Which statement about water best illustrates the property of adhesion?
water droplet found on a spider web in the morning
water molecules in a drop of dew
water is necessary for animal respiration
water dissolving salt into a solution

Answers

Answer:

i think its A)

Explanation:

hope this helps

The statement about water best illustrates the property of adhesion water droplet found on a spider web in the morning. Thus, option A is correct.

What happens in adhesion?

In adhesion, water molecule gets attracted towards other substances as in the case of water droplets lingering on the spider web. In case of cohesion, a water molecule gets attracted towards other water molecule as in the case of water molecules forming dew droplet.

Evaporation  is a physical process in which  liquid water converts to gaseous water. And also water dissolving salt into a solution is a chemical process in which molecular arrangements are considered.

Therefore, The statement about water best illustrates the property of adhesion water droplet found on a spider web in the morning. Thus, option A is correct.

Learn more about Evaporation on:

https://brainly.com/question/28319650

#SPJ7

Sex Linked Inheritance

Why are women often carriers of X-linked traits but rarely affected by them?

Answers

Answer:

Because women have two X chromosomes.

Explanation:

The development of machines to do simple and not so simple tasks, such as robotics and computers, has had many influences on society. Some of these have been positive and some of them negative. Which statement describes a negative aspect of mechanical technological advances?
A) fewer available jobs
B) lower prices for goods
C) less waste in production
D) lower cost of manufacturing

Answers

Answer:

a

Explanation:

this is a negative aspect of mechanical technology advances for humans.

which two method of waste management do you believe are best for society?​

Answers

Answer:

The two methods of Waste Management which I believe are best for society is recycling and landfilling.

Answer:

gsgshahhsudgdhxhciauahaususisssivdvdheusu


Label the flower will give brainliest

Answers

Answer:

1&2 stamen

3.petal

4.sepal

5.stigma

6.ovary

7.egg

8.ovule

Explanation:

antherfilamentpetalsepalgynoeciumthalamusembryo sacovule

hope it helps.

Please help on these two questions I’ll mark you as brainliest if correct!

Answers

Answer:

Question 4 the answer is A.

Question 5 the answer is A.

Explanation:

which statement best summarizes the temperature pattern shown in the weather map?
plz help this test is do at 4pm

Answers

Answer:

C

Explanation:

lmk if this helps! :)

use the base pairing rules to write the sequence that would pair with the following sequence: Agatcct

Answers

Answer:

TCTAGGA

Explanation:

The deoxyribonucleic acid (DNA) molecule consists of two single-strands, which are composed of four different types of nucleotide bases: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C). These two DNA strands run in an anti-parallel direction to each other. According to the base-pairing rules, Adenine always pairs with Thymine, while Guanine always pairs with Cytosine. In DNA, Thymine and Adenine form two hydrogen bonds between them, while Guanine and Cytosine form three hydrogen bonds between them.

Please select the word from the list that best fits the definition

wheelchair ramp

Answers

Explanation:

A wheelchair ramp is an inclined plane installed in addition to or instead of stairs. Ramps permit wheelchair users, as well as people pushing strollers, carts, or other wheeled objects, to more easily access a building, or navigate between areas of different height.

Energy from the wind is used to turn windmills. These windmills then spin a generator to produce electricity. Which statement would NOT support the claim that wind energy is considered a clean, renewable resource.

a. Wind energy is produced naturally.
b. Wind energy is used without giving off greenhouse gases.
c. There is an abundant supply of wind energy available for use.
d.There are only certain places that are suitable for collecting wind energy.

Answers

Answer: d

Explanation:

I think it is d

Helpp me answer this question make sure it’s right A,B,C,D

Answers

Answer:

A salmon eating shrimp i think

Answer: the answer is A

Explanation: well if we take a look at the question and think about what it is talking about we can see that answer b has absolutely nothing to do with the question that is being asked, answer c is literally the exact same as B just a different creature and body of water, d is just wrong

Why must donated tissue be analyzed before it is transplanted into another person? A) To prevent the formation of antigens in the donated tissue OB) To eliminate the introduction of pathogens into the recipient. C) To prevent the recipient's red blood cells from clotting. D) To prevent the recipient's body from attacking rejecting the tissue as foreign

Answers

Answer:

A) I think

Explanation:

Sorry if wrong

Which of the following best describes an inflammatory response?

A. It is a specific defense mechanism because the body recognizes the pathogen as one
that cannot withstand high temperatures
B. it includes fever and swelling and promotes phagocyte activity
C. it is part of the first line of defense and keeps pathogens from entering the body
D. lymphocytes flood the body and cause pus to build up in an area

Answers

B because that is what happens if u have a reaction to something and stuff like that

Answer:

The answer is B

Explanation:

This is a correct description of an inflammatory response.

Why is it important to understand how different species relate to one another?​

Answers

Answer:

to understand their relationship and how they will behaive

Explanation:

When the North Pole is farthest away (tilted away) from the sun it is possible for areas within the Artic circle to experience 24 hours of darkness without any sunlight.
A. True
B. False

Answers

Answer:

I think true

Explanation:

mark me brainliest

pls help and pls include the explanation

Answers

Answer: the answer is choice b

Explanation: based on knowledge about food chains, this choice makes the most sense

Hope this helps, and please give brainliest!

QUESTION 32
Which of the following is an advantage of sexual reproduction?
01.
Sexual reproduction promotes genetic variation.
2. Individual organisms are protected from harmful mutations.
3. Sexual reproduction is more energy efficient.
Sexual reproduction is faster than asexual reproduction.

Answers

The first option is correct.

Identify some ways that humans are reducing their impact on ecosystems,

Answers

Answer:

Completely turn off equipment like televisions and stereos when you're not using them. Choose energy-efficient appliances and light bulbs. Save water: some simple steps can go a long way in saving water like, like turning off the tap when you are brushing your teeth or shaving.

Explanation:

i hope it's what you're looking for :D

7. What is the correct order of the levels of organization in the human body from
the simplest to the most complex?​

Answers

Answer:

The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism.

All living and non-living things are made of one or more unique substances called elements, the smallest unit of which is the atom, (for example, the element oxygen (O) is made of O atoms, carbon (C) is made of C atoms and hydrogen (H) is made of H atoms. Atoms combine to form molecules.

All living structures are made of cells, which are made of many different molecules. Cells are the smallest independent living thing in the human body. The body is made of many different cell types, each with a particular function, (for example muscle cells contract to move something, and red blood cells carry oxygen). All human cells are made of a cell membrane (thin outer layer) that encloses a jelly-like cellular fluid containing tiny organ-like  structures called organelles.

A tissue is a group of similar cells that work together to perform a specific function. There are four main tissue types in humans (muscular, epithelial, nervous and connective). An organ is an identifiable structure of the body composed of two or more tissues types (for example, the stomach contains muscular tissue made of muscle cells, which allows it to change its shape, epithelial tissue which lines both the inner and outer surface of the

stomach, nervous tissue which sends and receives signals to and from the stomach and the central nervous system, and connective tissue which binds everything together).

Organs often perform a specific physiological function (for example, the stomach helps digest food). An organ system is a group of organs that work together to perform a specific function (for example, the stomach, small and large intestines are all organs of the digestive system, that work together to digest foodstuff, move nutrients into the blood and get rid of waste). The most complex level of organization, the human organism is composed of many organ systems that work together to perform the functions of an  independent individual.

hope this answer helps you.....

please mark as brainliest .... thank you!

A cohort study of benzene exposure and cancer was conducted in a tire manufacturing company:________
a) There were a total of 1,250 people working for the company.
b) 540 of the employees were exposed to benzene as a part of their daily job duties.
c) 710 employees were not exposed to benzene during their job duties.
d) 52 of the employees exposed to benzene developed cancer
e) 16 of the employees not exposed to benzene developed cancer.

Answers

In the  given question these are not options but the numbers of individuals affected or present in the study, the main question is:

calculate and interpret the relative risk for this study?

Answer:

The correct answer is - 4.27.

Explanation:

Given:

The total population is = 1250

                        Diseased.                      Healthy

Exposed              52...(a)                         488...(b)

Not exposed.       16...(c)                       694...(d)

solution:

Incidence among exposed / Incidence among non-exposed.

=> [tex]\frac{a}{a+b}[/tex]÷[tex]\frac{c}{c+d}[/tex]

=> 52/540÷16/710

=> 52×710÷16× 540

=> = 4.27

Thus, the Relative risk is = 4.27

Why does DMD affect mostly boys? Describe the type of inheritance pattern that DMD follows

Answers

Answer:

Inheritance in DMD

DMD is inherited in an X-linked pattern because the gene that can carry a DMD-causing mutation is on the X chromosome. Every boy inherits an X chromosome from his mother and a Y chromosome from his father, which is what makes him male. Girls get two X chromosomes, one from each parent.

Explanation:

which two activities are carried out by all species of living things 1-make food and eliminate waste 2-hibernate and take in nutrients 3-grow and reproduce 4-migrate and seek shelter

Answers

it’s 3 search up mrs gren acronym

In your own words, explain the effect of greenhouse gasses, what can
you do as a global citizen to reduce the greenhouse effect? Your
paragraph should be at least 5-7 sentences.

Answers

Answer:

Greenhouse gases have far-reaching environmental and health consequences.

In 1906, President Theodore Roosevelt created the Grand Canyon National Game Preserve on the Kaibab Plateau in northern Arizona. Between 1907 and 1923, cattle grazing was greatly reduced, mule deer hunting was eliminated, and predators were killed. Over 800 cougars, 20 wolves (most had already been killed in the 1800s), and 7000 coyotes were trapped or shot. In response, the mule deer herd began to increase: By 1915, deer numbers were estimated at 25,000; 50,000 by 1920; and 100,000 by 1923. The removal of the livestock and predators, and the cessation of hunting in 1907 ________. decreased the carrying capacity for the Kaibab deer decreased r, allowing more births among Kaibab deer decreased K, allowing more births among Kaibab deer removed the limits on immigration, allowing more deer into the area increased the carrying capacity for the Kaibab deer

Answers

Answer: increased the carrying capacity for the Kaibab deer

Explanation: The removal of livestock means more food as grass is available for the Kaibab deer to feed on. In the same vein, the nonexistence of predators would allow for proliferated growth which in turn would increase the number of deer population on the plateau. What this means is that the Preserve is now able to carry as much deer population as it could going forward thereby increasing the carrying capacity for the Kaibab deer which was evident by the increasing figures on the years the deer numbers were estimated.

5) Which of the following does not occur during the light reactions of photosynthesis?
A) Oxygen is split, releasing water
B) Electrons from chlorophyll are added to an electron transport chain
C) An electron transport chain drives the synthesis of ATP for use by the Calvin cycle
D) NADPH is produced and will carry electrons to the Calvin cycle
E) Oxygen is produced when water s split

Answers

Answer:

A)

Explanation:

Oxygen doesn't split for water, water splits for oxygen

How is citric acid produced?

Answers

Explanation:

Mainly by submerged fermentation using Aspergillus niger or Candida sp from different sources of carbohydrates, such as molasses and starch based.

A team of students encountered an unorganism in the field conducting a biodiversity study some students think the organism is a plant or other things organism which question should the students investigate to classify the organism correctly

Answers

Answer:

Does the organism perform photosynthesis?

Is your answer

Explanation:

Cite evidence that living systems follow the Laws of Conservation of Mass and Energy. How do living systems follow the law of conservation of mass and energy?

Answers

Answer: Living systems use the Law of Conservation of Mass when a living organism dies. When the organism decomposes carbon is released and enters back into the Earth. This follows the law because the mass is not being created or destroyed, but reused. Living systems use the law of conservation of mass when a living organism dies. ... It follows the law because the mass is not being created or destroyed, but reused. Living systems use the law of conversation of energy when an organism decomposes

Explanation:

show proof and work and ill give brainliest

Answers

Answer:

d

Explanation:

birds eat those two animals and that can be proved by the graph

please help i will give you brainliest!!!!!!

Answers

Explanation:

you just have to sit there and basically say why the smog did what it did to the dinos, you need to sit there and explain how it hurt there bodys minds ect... its just like smoke to us it would make us choke from breathing it in and cause the black lung stuff.

Other Questions
helllllllppppp plzzz science helpppppppppppppppppppppppppppppppp based on the myths, what are values of both the haida and the maori. C - Judaism and Christianity share a belief in one God and an afterlife, but only Christians believethatD. The New Testament should not be included in the BibleC all people are equal in God's eyesA. Jesus is the son of GodB Canaan was the Promised Land what is the perimeter of the triangle HELP!!! (the correct answer will be marked as brainliest)The salary of fast food store branch manager is 3 times more than a part time employee salary, $x per day. Working hours for part time employees are half of the manager's working time, y within a month. If they work 26 days in a month, write the formula for the difference in salary, $z between the two workers in terms of x and y. Write the correct form of the verb jugar in the blanks. 1. T y yo ____ al tenis2. ustedes ____ al bsquetbol. 3. yo ___ al golf a train travels 288km at a uniform speed.if the speed has been 4km per hour more it would have taken one hour less for the same journey.find the speed of train What is the authors attitude toward a subject called? i KNOW THIS IS LATE BUT WILL GIVE BRAINLEST What role does the law of supply and demand play in a command economy?A. The law of supply and demand applies to a command economy as much as it does to other economies.B. The law of supply and demand functions in reverse because a command economy is the opposite of a market economy.C. The law of supply and demand does not apply because in a command economy, the government controls the market.D. The law of supply and demand functions the same way as in other economies, but the government sets the prices. Duanes scores on the first three math tests this quarter are 82, 74, and 96. Which is the lowest score he could get on the fourth test so that his average score will be at least 80 for the quarter? Angela, Inc., holds a 90 percent interest in Corby Company. During 2020, Corby sold inventory costing $114,300 to Angela for $127,000. Of this inventory, $43,600 worth was not sold to outsiders until 2021. During 2021, Corby sold inventory costing $153,600 to Angela for $192,000. A total of $50,400 of this inventory was not sold to outsiders until 2022. In 2021, Angela reported separate net income of $168,000 while Corby's net income was $102,000 after excess amortizations. What is the noncontrolling interest in the 2021 income of the subsidiary Please answer for me. No links, fake pics or files I need help on this one please Triangle ABC is a dilation image of triangle ABC. Which is the correct description of the dilation? A. Center C and scale factor 4B. Center A and scale factor 4C. Center A and scale factor 5D. Center C and scale factor 5 How were future new states to decide if they entered the Union as a free or slave state? Can someone one help me? Find the difference. 2 1/6 - 1 3/61/63/64/61 4/6 explain how blood flows through the heart Pls help die in 10 mins