The ld50 for arsenic in humans is 13mg/kg. Which of the following approaches should be used to calculate the number of grams of arsenic it would take to reach the ld50 in a 140-pound person? [note: 1kg=2. 2pounds]

Answers

Answer 1

By performing a change of units, we will see that there are 0.827 g of arsenic needed.

How to calculate the grams of arsenic?

We know that the ld50 for arsenic in humans si 13mg/kg.

Now, if there is a person of 140 lb, to find the number of grams of arsenic it would take to reach the ld50, first we need to rewrite the mass of the person in kilograms.

Remember that:

1kg = 2.2 lb

then:

1 lb = (1/2.2) kg

Then we can rewrite the mass as:

M = 140lb = 140*(1/2.2) kg = 63.64 kg.

The amount of arsenic to reach the ld50 will be:

A = (13mg/kg)*(63.64 kg) = 827.27 mg

And we want this quantity in grams, remember that:

1 mg = 1*10^(-3) g

Then we can rewrite:

A = 827.27*(1*10^(-3)) g = 0.827 g

If you want to learn more about a change of units, you can read:

https://brainly.com/question/9032119


Related Questions

Charlie earns an annual salary of $61,870. If he is paid weekly, how much would his gross pay be each week?

Answers

In a year, there are total 52 weeks usually, so annual salary is weekly salary times 52. Charles' weekly pay is given by: Option d: $1,189.81

How to count the number of ways in a year?

A year contains approx 365 days usually (leaving leap years)

A week contains 7 days.

Dividing 365 in group of 7s, we get:

(1 as remainder, 52 as quotient), so one day is left only) (this is not always the case that there would be 52 weeks only, there can be sometimes 51 weeks due to some incomplete weeks).

(for general case, we will assume there are 52 weeks in an year).

For the considered case, it is specified that:

Annual salary of Charles = $61,870

There are 52 weeks in an year, so, dividing his salary in 52 parts, we get his weekly salary as:

Thus,  Charles' weekly pay is given by: Option d: $1,189.81

Learn more about division here:

brainly.com/question/26411682
:)

Jerry visits casinos two weekends every year. While there, he usually loses several thousand dollars gambling. Between casino visits, he neither gambles nor thinks much about gambling. Which statement is the most accurate assessment of this behavior?

Answers

The statement that is most accurate assessment of Jerry's behavior is: This behavior is not a gambling disorder.

What is Gambling Disorder?

Gambling disorder, also known as pathological gambling, can be described as a disorder which involves repeated gambling behavior that interferes with one's day to day life leading to problems for the individual, their families and the society.

From the information given about Jerry, it even though he loses money gambling, it doesn't interfere with his daily activities or normal life.

Therefore, the statement that is most accurate assessment of Jerry's behavior is: This behavior is not a gambling disorder.

Learn more about gambling disorder on:

https://brainly.com/question/7296239

This theory of emotion suggests that first a specific physiological response to stimuli is experienced, and the emotion that results is an interpretation of this unique physiological "code"

Answers

James–Lange theory is a physiological theory of emotion that explains that emotions are created in response to experiences and stimuli, where the autonomic nervous system creates physiological responses.

What is James–Lange theory?

It is a theory proposed independently by William James and Carl Lange, which suggests that emotions occur as a consequence of physiological reactions to events.

For this theory, emotions are processes that involve a series of triggering conditions or relevant stimuli.

Therefore, we can conclude that the James–Lange theory explains the origin of the components of emotion and where physiological activation plays an important role in the existence of an emotional response.

Learn more about James–Lange theory here: https://brainly.com/question/9877031

Two right angled triangles are joined together to make a larger triangle acd

Answers

The perimeter of triangle ACD that is formed by two right-angle triangles ACB and DCB, approximated to 1 decimal place is: 40.1 cm.

The history of chocolate began over three and a half thousand years ago

Answers

Answer:

True

Explanation:

It was also used for money to i think

How does cinna's request to get brutus involved affect cassius? select two options. Cinna's request makes cassius reconsider including brutus. Cinna's request makes cassius ask him to take an incriminating letter to brutus. Cinna's request makes cassius trust him to return to pompey's theatre and meet cassius there. Cinna's request makes cassius seek out new and more loyal consipirators. Cinna's request makes cassius weigh the events of the night and postpone his planned meeting

Answers

The two ways that cinna's request to get brutus involved affect cassius are;

B. Cinna's request makes Cassius ask him to take an incriminating letter to Brutus.C. Cinna's request makes Cassius trust him to return to Pompey's Theatre and meet Cassius there.

What are the lessons from a passage?

From the given passage, when Cinna says he wanted Brutus to join them, it propelled Cassius to ask Cinna to deliver a letter to Brutus. Now, this was very obvious when Cassius said "Be you content. Good Cinna, take this paper and look you lay it in the praetor’s chair, where Brutus may but find it. And throw this in at his window. Set this up with wax upon old Brutus’ statue."

Looking at the given options, and comparing with the summary above we can say that options B and C are correct

Read more about passage lessons at; https://brainly.com/question/25950911

Answer:

B & C

Explanation:

i did it :T

The scientific method is a process used by scientists to solve problems that can be tested. Describe how a scientist can create a good hypothesis for her experiment. Include where the information comes from, what a hypothesis is, and how it should be written.​

Answers

Answer:

هذه معادلة قوية جدا وبسيطة

Explanation:

هذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطةهذه معادلة قوية جدا وبسيطة

Sara finds that one of her old metal frying pans has a hole in it from rust. Which type of frying pan should she replace it with?(1 point)

Answers

Based on the above case, Sara should use a pan that is made out of a different kind of metal that will not rust such as the one made from polymers.

What is the best metal for a frying pan?

Stainless steel is know to be one of the best and general purpose frying pan material.

But the fact remains that stainless steel on its own is not a good conductor of heat and as such, to avoid rust one can use a pan that is made out of a different kind of metal that will not rust such as the one made from polymers.

Learn more about Pans from

https://brainly.com/question/26798796

2 Where
the earrings that I left by the bathroom sink? Oh no! That stupid cat has swatted them down the drain again!
A
was
were
B c
IS
D
are

Answers

Answer:

D. Are

Explanation:

where ARE the earrings that I left by the bathroom sink? Oh no! That stupid cat had swatted them down the drain again!

In a population of bats living in a certain region

Answers

… you were saying you kinda just stopped

When the speaker in "any human to another" says that "sorrow never scorned to speak / to any who / were false or true," he means that __________

Answers

The speaker means that; sorrow comes to every human being

The poem " any human to another"

In the poem " any human to another" the summary of the poem is that every human have undergone one form of suffering and this unites every human on earth. therefore what the speaker says  means that sorrow comes to every human being.

Hence we can conclude that The speaker means that sorrow comes to every human being

Learn more about  "any human to another" : https://brainly.com/question/4418450

Answer:

sorrow comes to every human being

Explanation:

A spring gun shoots out a plastic ball at speed v0. The spring is then compressed twice the distance it was on the first shot

Answers

Based on the compression of the spring and the speed, the following are true:

The factor by which the spring's potential energy is increased is = 4.The factor of increase in speed = 2.

What is the factor of increase in potential energy?

Potential energy is found as:

= 0.5k x (2 x compression²)

= 4 x 1/2kx²

The 4 shows that the potential energy increases by 4 times.

What is the factor of increase in speed?

Initial speed is:

= x × √(k/m)

New speed will be:

= Compression factor x speed

= 2x × √(k/m)

The speed will therefore be increased by a factor of 2.

Find out more on potential energy at https://brainly.com/question/14427111.

Which of the following are tiny particles that are the building blocks for all matter in the universe?

Atoms
Gases
Mixtures
Substances

Answers

Answer:

A. Atoms

Explanation:

Looked it up and got your answer. Also learned this in school years ago. Trust me.

what SAT score do you need to enter (please answer the following)
engineering school and med school?

Answers

At least a 700 on SAT Math or a 30 on ACT math to get into engineering school; at least a 1,400 on the SAT and above a 33 on the ACT for Medical School

What are the signs of high inflation? check all that apply

Answers

Answer:

The Federal Reserve is Buying 70% of U.S. Treasuries.

) The Private Sector Has Stopped Purchasing U.S. Treasuries.

China Moving Away from U.S. Dollar as Reserve Currency.

Japan to Begin Dumping U.S. Treasuries

The Fed Funds Rate Remains Near Zero.

Year-Over-Year CPI Growth Has Increased 92% in Three Months

Mainstream Media Denying Fed's Target Passed.

Record U.S. Budget Deficit in February of $222.5 Billion

High Budget Deficit as Percentage of Expenditures

Obama Lies About Foreign Policy.

Obama Changes Definition of Balanced Budget

U.S. Faces Largest Ever Interest Payment Increases.

Explanation:

1.public policy begins with . 2.then, government officials . 3.finally, a government agency .

Answers

Answer:

1.Public policy begins with identifying an issue.

2. Then, government officials form a solution.

3. Finally, a government agency implements the solution.

Explanation:

Public policy begins with identifying an issue. Then, government officials form a solution. and  Finally, a government agency implements the solution.

What is Public policy?

Governmental bodies create laws, set policies, and distribute funds in every society. A system of rules, regulations, courses of action, and financial priorities involving a specific subject that have been established by a governmental body or its representatives is known as public policy.

People and organizations frequently make an effort to influence public policy through advocacy, education, or the mobilization of interest groups.

In Western-style democracies, public policy is clearly shaped differently from how it is in other systems of government. But it is logical to suppose that competing interest groups would always make an effort to sway policymakers in their direction.

Therefore, Public policy begins with identifying an issue. Then, government officials form a solution. and  Finally, a government agency implements the solution.

To learn more about Public policy, refer to the link:

https://brainly.com/question/14616070

#SPJ5

Dwayne uses 2 quarts of milk in 1 week. What is the total number of cups in 2 quarts?

Answers

Answer:

2 qrts=8 cups

Explanation:

Match the words to the correct descriptions.

Have different properties depending on the number of protons.

The atoms take on new properties when they bond together or are separated.

The ingredients maintain their properties when they are placed together or taken apart.

1. Compounds

2. Mixtures

3. Atoms

Answers

Answer: 3, 2, 1

Explanation: i was a B student in chemistry and we learned this first hand.

When a cat drops from a tree to the ground, the conversion of takes place. Then cat runs up behind a mouse to obtain its food. After eating its prey, the conversion of takes place inside the cat’s body

Answers

When a cat drops from a tree to the ground the conversion of gravitational potential energy to Kinetic energy takes place.

After eating its prey the conversion of Chemical to mechanical energy takes place.

Energy conversion

Energy is neither created nor destroyed rather it is transformed/converted from one form to another. when the cat is at rest on the tree it possesses a potential energy but at it falls to the ground the potential energy is converted to a kinetic energy. Also

As the cat consumes the rat the energy absorbed from the consumption of the rat is converted to mechanical energy which enables the mobility of the rat.

Hence we can conclude that the conversion of energy is as listed above.

Learn more about Energy conversion : https://brainly.com/question/961052

Answer:

When a cat drops from a tree to the ground, the conversion of gravitational potential energy to kinetic energy takes place. Then cat runs up behind a mouse to obtain its food. After eating its prey, the conversion of chemical energy to mechanical energy takes place inside the cat’s body.

Hope this helps!

Explanation:

It takes 12. 5 ml of a 0. 30 m hcl solution to neutralize 285 ml of naoh solution. What is the concentration of the naoh solution?

Answers

Answer:  M₂ = 0

Explanation:

HCl + NaOH — NaCl + H2O

For acid base titrations:

M₁ V₁ = M₂ V₂

where lower-script 1 and 2 are the molarity and volume for acid and base respectively.

M₁ = 0.30 M

V₁ = 12.5 ml

M₂ =  (unknown)

V₂ = 285


0.30 x 12.5 = 285 M₂

M₂ = 3.8/ 285

M₂ = 0


p.s  I think there is an error with the typed question. It’s not possible to use 285 ml of base against 12.5 ml of acid.

The process that produces micho bars (a type of milk cholate candy) is intended to produce bars with a mean weight of 56 gm. The process standard deviation is known to be 0. 77 gm. A random sample of 49 candy bars yields a mean weight of 55. 82 gm

Answers

Answer:

The process that produces Sonora Bars (a type of candy) is intended to produce bars with a mean wight of 56 gm. The process population standard deviation is known to be 0.77 gm A random sample of 49 candy bars yields a mean wight of 55.82 gm.

Explanation:

Which are the hypotheses to test whether the mean is smaller than it is supposed to be? a. H_0: mu lessthanorequalto 56, H_A: > 56 b. H_0: mu greaterthanorequalto 56, H_A: < 56 c. H_0: mu = 56, H_A: mu notequalto 56 d. H_0:mu <56, H_A:mu greaterthanorequalto 56 In a left (one - tailed) test, a statistician got a z test statistic of -1.720. What is the p - value? a. 0.4292 c. 0.0709 b. 0.0427 d. 0.0301 Alpha (alpha) is a. equal to the probability of committing a Type 1 error. b. called the test's significance level. c. the probability of rejecting H_0 when it is really true. d. All the above are true. Given the following information, if the hypothesis test is conducted at the 1% level of significance, the null hypothesis should n = 16 x = 73 s = 8.246 H_0:mu greaterthanorequalto 80 H_A:mu < 80 a. not be rejected b. be rejected c Not enough information is given to answer this question. d None of these alternatives is correct

What is the value of the expression 26. 95 divided by -5 1/2

Answers

Answer:

I'm not sure if this is right, but I got -4.9

Explanation:

hope it helps

How many moles of no are required to completely react with 2. 45 mol nh3

Answers

Answer:

3.68 moles of NO (to 3 sig figs).

Explanation:

Sana nakatulong

The domain incorporates cultural norms that directly impact sustainable development. The domain focuses on the protection and preservation of natural and artificial resources

Answers

Answer:

The economic domain incorporates cultural norms that directly impact sustainable development. The environmental domain   focuses on the protection and preservation of natural and artificial resources

Explanation:

Why is the sediment’s permeability an important factor in deciding where to put your well?

Answers

Answer:

The importance of the sediments permeability is that if it is permeable, water will flow easily through the sediment and thereby produce a very good supply of water for the well.

The five components of health-related fitness include __________.
A.
cardiovascular fitness, muscle tone, muscular endurance, flexibility, and body composition
B.
cardiorespiratory fitness, muscular strength, resting heart rate, muscular endurance, and body composition
C.
cardiorespiratory fitness, muscular strength, muscular endurance, flexibility, and body composition
D.
calisthenics, muscular strength, muscular endurance, flexibility, and body composition



Please select the best answer from the choices provided.


A
B
C
D

Answers

the answer would be C

Answer:

C

Explanation:

A type of longitudinal wave where the particles are spread apart

Answers

Answer:

rarefaction a type of wave where the particles are spread apart

Although the assassination of franz ferdinand was a local political action, its consequences were:

Answers

Answer:

global

Explanation:

the assassination of Franz Ferdinand was one of the main causes of the war, and the war involved a large portion of the world and I just got it right on the quiz.

A cylinder has a volume of 78 cubic cm. What is the volume of a cone with the same radius and height?

Answers

Answer:

Volume of cylinder V= bh= 78 cm^3, where b is area of base(circle). Then volume of cone = 1/3bh =1/3*78 = 26 cm^3

Which prediction about the plot does this passage most support? cassius will die. Rome will be destroyed. Brutus will kill caesar for the good of rome. Brutus will choose life before honor

Answers

The prediction about the plot does this passage most support is that Brutus will kill Caesar for the good of Rome.

What is the above phrase about?

The phrase of Brutus will kill Caesar for the good of Rome is known to be one that connote the fact that Brutus did claimed that the reason why he  was killing Caesar is for the people and the good of Rome.

Brutus see Caesar as he was gradually turning into a tyrannical ruler, and this will bring a lot of harm to Rome and thus he wanted to kill him before he turn evil.

Learn more about the prediction from

https://brainly.com/question/22240096

Answer:

Brutus will kill Caesar for the good of Rome.

Explanation:

Other Questions
After watching the video summary of Act 1 Scene 3, what do you think Macbeth will do next? Explain your reasoning.The following questions may help form a response: What do the witches say about Macbeth? What does Macbeth think about becoming king? What do you think he will do?Video: Macbeth Summary (Act 1 Scene 3) - Nerdstudy Im super confused about this question as its a new topic please help me 3. Choose the best description of a neap tide.Neap tides happen during winter and summer.Neap tides produce during the highest tides of the month.A neap tide is the period halfway between tides when the tide changes direction.Neap tides could be described as low high tides and high low tides. how were battles fought during the revolutionary war A class of 20 students is visiting the fair today. Each student is 16 years old or younger and will participate in either the Hay Bale Toss or the Pie Eating Contest. If all 20 students joined the same event, how would the shape of the histogram change compared to the original?Histogram with title Hay Bale Toss, horizontal axis labeled Age Group (year) with bins 0 to 19, 20 to 39, 40 to 59, and 60 to 79 and vertical axis labeled Number of People with values from 0 to 60 at intervals of 10. The first bin goes to 40, the second goes to 50, the third goes to 30, and the last goes to 20. Histogram with title Pie Eating Contest, horizontal axis labeled Age Group (year) with bins 0 to 19, 20 to 39, 40 to 59, and 60 to 79 and vertical axis labeled Number of People with values from 0 to 60 at intervals of 10. The first bin goes to 20, the second goes to 40, the third goes to 60, and the last goes to 50. The Hay Bale Toss would be more symmetrical. The Pie Eating Contest would be less symmetrical. The Hay Bale Toss would be more skewed. The Pie Eating Contest would be more skewed. Larges classes are called Mandy works construction. She knows that a 555 meter long metal bar has a mass of 40 \text{ kg}40 kg40, start text, space, k, g, end text. Mandy wants to figure out the mass (w)(w)left parenthesis, w, right parenthesis of a bar made out of the same metal that is 333 meters long and the same thickness. What is the mass of the shorter bar? Identify a possible value for X that would make the relation shown in the table not A function. Explain. Fill in the missing amounts in each of the eight case situations below. Each case is independent of the others. (Hint: One way to find the missing amounts would be to prepare a contribution format income statement for each case, enter the known data, and then compute the missing items.) Assume that only one product is being sold in each of the four following case situations. Input all amounts as positive values except for Net operating loss which should be indicated by a minus sign. Omit the "$" sign in your response.Case Units Sold Sales Variable Expenses Contribution Margin Per Unit Fixed Expenses Net Operating Income Loss1 15,000 $180,000 $120,000 $4 $50,000 $______2 4,000 $100,000 $60,000 $10 $32,000 $8,0003 10,000 $______ $70,000 $13 $_______ $12,0004 $6,000 $300,000 $210,000 $15 $100,00 $(10,000)Assume that more than one product is being sold in each of the four following case situations: Input all amounts as positive values except for Net operating loss which should be indicated by a minus sign. Omit the "$" sign in your response.Case Sales Variable Expenses Average Contribution Margin Ratio Fixed Expenses Net Operating income (Loss)1 $500,000 $______ 20% $______ $7,0002 $400,000 $260,000 35% $100,000 $40,0003 $______ $______ 60% $130,000 $20,0004 $600,000 $420,000 _______% $______ $(5,000) 24. Who spent the least amount of time onhomework?IM BEGGING YOU GUYS ANSWER ASAP TIMED ASSIGNMENT What is the answer to this? Where do most Asian immigrants settle?The South.The East.The NortheastThe West. Which type of validity indicates the assessment tool measures the construct it is intending to measure? For example, this type of validity would determine that all questions on the Beck Depression Inventory II pertained to depression.a. Discriminant validityb. Convergent validityc. Criterion validityd. Content validity What is 232 divided by 4 WILL GIVE BRAINIEST!!!!!!! PLEASE HELP ASAP!! . Identify the vertex of the parabola given by f(x) = 2x^2 12x + 7. For this exercise, you will need:o two ice cubeso a metal pie or cake pano a ceramic plateo a paper towelPlace one ice cube on the metal pan, and the other on the plate with the folded paper towel under it. Leave them both at room temperature, and observe which one melts faster. Explain your results in a paragraph.Also yes it is an activity and REAL answers only. What is the past perfect? Why was trading important across the globe? God created the world through His Word.TrueFalse