How would you determine the half-life of an unknown element?

How would you determine the half-life of an unknown element?
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“Three gods, A, B, and C, are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is completely random. You must determine the identities of A, B, and C by asking three yes-or-no questions, and each question must be posed to exactly one god. The gods understand English but will answer all questions in their own language. In their unknown language, the words for “yes” and “no” are “da” and “ja,” in some order. You do not know which word means which.” -Riddles

Description : Three gods, A, B, and C, are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is completely random. You must ... are da and ja, in some order. You do not know which word means which. -Riddles

Last Answer : We're willing to bet that your brain feels pretty busted at this point. If you're ready to throw in the towel and hear the solution, we won't tell! Here are the three questions you ... start sorting out the solution with this 2008 paper, which claims to have the easiest answer to the brainteaser.

Three gods, A, B, and C, are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is completely random. You must determine the identities of A, B, and C by asking three yes-or-no questions, and each question must be posed to exactly one god. The gods understand English, but will answer all questions in their own language. In their unknown language, the words for 'yes' and 'no' are 'da' and 'ja', in some order. You do not know which word means which. So, which questions would you ask to identify each god? And no, it’s not a trick question. As a matter of fact, there are multiple ways to get the correct answer. -Riddles

Description : Three gods, A, B, and C, are called, in some order, True, False, and Random. True always speaks truly, False always speaks falsely, but whether Random speaks truly or falsely is completely random. ... a trick question. As a matter of fact, there are multiple ways to get the correct answer. -Riddles

Last Answer : 1. To god A: Does da' mean yes' if and only if you are True and if and only if B is Random? (We supposed A said, ja, making B True or False). 2. To god B: Does da mean yes' if and ... only if A is Random? Since B's True, he must say da, which means A is Random, leaving C to be False.

How can you determine if an unknown substance is an ionic compound or a nonpolar covalent compound?

Description : How can you determine if an unknown substance is an ionic compound or a nonpolar covalent compound?

Last Answer : Ionic compound: the difference between the electronegativities of the elements is higher than 2.Nonpolar covalent compound: the difference between the electronegativities of the elements isnear zero.

How do you Determine the identity of the anion in your unknown?

Description : How do you Determine the identity of the anion in your unknown?

Last Answer : Methods of analytical chemistry must be applied.

An unknown element is a soft metallic solid. It is highly reactive and has a low melting point. In which group of the periodic table is it most likely to be found?

Description : An unknown element is a soft metallic solid. It is highly reactive and has a low melting point. In which group of the periodic table is it most likely to be found?

Last Answer : Sodium - group 1

For a beam having fixed ends, the unknown element of the reactions, is (A) Horizontal components at either end (B) Vertical components at either end (C) Horizontal component at one end and vertical component at the other (D) Horizontal and vertical components at both the ends

Description : For a beam having fixed ends, the unknown element of the reactions, is  (A) Horizontal components at either end  (B) Vertical components at either end  (C) Horizontal component at one end and vertical component at the other  (D) Horizontal and vertical components at both the ends 

Last Answer : (D) Horizontal and vertical components at both the ends 

Mendeleev proposed the existence of an unknown element that he called eka-aluminum. The element is now called: w) magnesium x) silicon y) gallium z) germanium

Description : Mendeleev proposed the existence of an unknown element that he called eka-aluminum. The element is now called: w) magnesium x) silicon y) gallium z) germanium

Last Answer : ANSWER: C -- GALLIUM

When the polarisation of the receiving antenna is unknown, to ensure that it receives atleast half the power, the transmitted wave should be a) Linearly polarised b) Elliptically polarised c) Circularly polarised d) Normally polarised

Description : When the polarisation of the receiving antenna is unknown, to ensure that it receives atleast half the power, the transmitted wave should be a) Linearly polarised b) Elliptically polarised c) Circularly polarised d) Normally polarised

Last Answer : c) Circularly polarised

What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?

Description : What is a way to determine age of fossil by comparing number of stable isotopes to number of unstable isotopes using half life?

Last Answer : Carbon decay or carbon dating

The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order. A) Zero (B) First (C) Second (D) None of these

Description : The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order. A) Zero (B) First (C) Second (D) None of these

Last Answer : (C) Second

In “Product Life Cycle” a stage represents a new and previously unknown product forbuyers known as_____. a.Mature stage b.Introduction stage c.Decline stage d.None of the above

Description : In “Product Life Cycle” a stage represents a new and previously unknown product forbuyers known as_____. a.Mature stage b.Introduction stage c.Decline stage d.None of the above

Last Answer : b.Introduction stage

Temperate varieties of carrot have ________ life cycle. a. Annual b. Biennial c. Perennial d. Unknown

Description : Temperate varieties of carrot have ________ life cycle. a. Annual b. Biennial c. Perennial d. Unknown

Last Answer : Biennial

What is the half-life of a radioactive element ?

Description : What is the half-life of a radioactive element ?

Last Answer : Half-life is the amount of time during which half of the nucleus of an element is irradiated.

The activity of a radioactive element reduces to `(1//16)th` of its original value in 30 years. Find its half life?

Description : The activity of a radioactive element reduces to `(1//16)th` of its original value in 30 years. Find its half life?

Last Answer : The activity of a radioactive element reduces to `(1//16)th` of its original value in 30 years. Find its half ... B. 75 trs C. 7.5 day D. 75 month

Initial amount of the radioactive element with half life 10 days is 16 g. What amount in gm of this element will remain after 40 days?

Description : Initial amount of the radioactive element with half life 10 days is 16 g. What amount in gm of this element will remain after 40 days?

Last Answer : Initial amount of the radioactive element with half life 10 days is 16 g. What amount in gm of this element will remain after 40 days?

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Description : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Last Answer : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an ... 0.001 B. 1 C. 0.999 D. 0.1

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Description : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Last Answer : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an ... n)` D. `t_(1//2) lambda In 2`

The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Description : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an element, greater is its radioactivi

Last Answer : The activity of a nucleus is inversely proportional to its half of average life. Thus, shorter the half life of an ... stable? A. I B. II C. III D. IV

A radioactive element gets spilled over the floor of a room. Its half life period is 30 days. If its initial activity is ten times the permissible val

Description : A radioactive element gets spilled over the floor of a room. Its half life period is 30 days. If its initial activity is ten times the permissible val

Last Answer : A radioactive element gets spilled over the floor of a room. Its half life period is 30 days. If its initial ... B. 1000 days C. 300 days D. 10 days

75% of a radioactive element decays in 6 hours. Its half life period is __________ hours. (A) 3/4 (B) 1/6 (C) 3 (D) 4

Description : 75% of a radioactive element decays in 6 hours. Its half life period is __________ hours. (A) 3/4 (B) 1/6 (C) 3 (D) 4

Last Answer : (C) 3

Pick out the wrong statement. (A) α-particle emission from a radioactive element makes it electrically negative (B) β-particle emission from a radioactive element makes it electrically positive (C) A radioactive element having a half life period of 20 years will completely disintegrated in 40 years (D) The disintegration constant of a radioactive isotope is independent of pressure, temperature or concentration

Description : Pick out the wrong statement. (A) α-particle emission from a radioactive element makes it electrically negative (B) β-particle emission from a radioactive element makes it electrically ... ) The disintegration constant of a radioactive isotope is independent of pressure, temperature or concentration

Last Answer : (C) A radioactive element having a half life period of 20 years will completely disintegrated in 40 years

The half life period of a radioactive element depends on its (A) Temperature (B) Pressure (C) Amount (D) None of these

Description : The half life period of a radioactive element depends on its (A) Temperature (B) Pressure (C) Amount (D) None of these

Last Answer : (D) None of these

. The half life period of a radioactive element depends upon the (A) Temperature (B) Pressure (C) Amount of element present (D) None of these

Description : . The half life period of a radioactive element depends upon the (A) Temperature (B) Pressure (C) Amount of element present (D) None of these

Last Answer : (D) None of these

The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm. (A) 1/4 (B) 1/8 (C) 1/2 (D) 1/16

Description : The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to __________ gm. (A) 1/4 (B) 1/8 (C) 1/2 (D) 1/16

Last Answer : (D) 1/16

The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years. (A) 24 (B) 18 (C) 6 (D) 36

Description : The time taken for a radioactive element to reduce to 50% of its original weight is __________ years, if its half life period is 12 years. (A) 24 (B) 18 (C) 6 (D) 36

Last Answer : (B) 18

The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? A. 4 days B. 12 days C. 16 days D. 8 days (Answer) E. None of these

Description : The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg? A. 4 days B. 12 days C. 16 days D. 8 days (Answer) E. None of these

Last Answer : D. 8 days (Answer)

If you start with 24 grams of a radioactive element with a half-life of one month, how many grams of the radioactive element will be left after 2 months? w) 1.5 grams x) 3 grams y) 6 grams z) 12 grams

Description : If you start with 24 grams of a radioactive element with a half-life of one month, how many grams of the radioactive element will be left after 2 months? w) 1.5 grams x) 3 grams y) 6 grams z) 12 grams

Last Answer : ANSWER: Y -- 6 GRAMS

The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.625 grams y) 1.25 grams z) 2.50 grams

Description : The half-life of an isotope of an element is 5 days. The mass of a 10 gram sample of this isotope remaining after 20 days is: w) 0.312 grams x) 0.625 grams y) 1.25 grams z) 2.50 grams

Last Answer : ANSWER: X -- 0.625 GRAMS

Is there any shortcut to determine which version exists in which element ?

Last Answer : There are shortcut chemistry books. Price 280 rupees. If you want to take 0171369352 message (with name and address)

What determine the most likely oxidation state of an element?

Description : What determine the most likely oxidation state of an element?

Last Answer : the number of electrons the element needs to lose or gain tohave a full valence shell

There is a barrel with no lid and some **** in it. 'This barrel of **** is more than half full,' said the Madam. 'No it's not,' says the man. 'It's less than half full.' Without any measuring implements and without removing any **** from the barrel, how can they easily determine who is correct? -Riddles

Description : There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said the Madam. 'No it's not,' says the man. 'It's less than half full.' ... any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct? -Riddles

Last Answer : Tilt the barrel until the wine barely touches the lip of the barrel. If the bottom of the barrel is visible then it is less than half full. If the barrel bottom is still completely coverd by the wine, then it is more than half full.

Julie is going on an extended trip for three weeks. She lives in a remote area where there are frequent electrical power outages which can last up to three or four days. Julie has quite a bit of food in her freezer which would go bad if it thawed and then re-froze. She does have digital clock and a VCR which would flash 12:00 if the power went out. Unfortunately the clock and VCR flash even if the power only goes out for a few seconds. What can Julie do so that when she returns home she will be able to determine whether the power was out long enough to thaw her food? Asking a neighbor whether the power was out, isn't a reliable option because the nearest house is half a mile away, and one house may have power, while another house may have no power. She won?t be able to have a neighbor chec

Description : Julie is going on an extended trip for three weeks. She lives in a remote area where there are frequent electrical power outages which can last up to three or four days. Julie has quite a bit of food ... power, while another house may have no power. She won?t be able to have a neighbor chec -Riddles

Last Answer : One thing Julie could do is freeze a tray of ice-cubes, and turn the tray of ice upside down in her freezer. When she comes home, she should check the tray. If the ice cubes are still in the ... clean out the freezer. She will have to make a judgment call if the ice-cubes are only slightly thawed.

There is a barrel with no lid and some **** in it. 'This barrel of **** is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any **** from the barrel, how can they easily determine who is correct? -Riddles

Description : There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct? -Riddles

Last Answer : Tilt the barrel until the wine barely touches the lip of the barrel. If the bottom of the barrel is visible then it is less than half full. If the barrel bottom is still completely covered by the wine, then it is more than half full.

What is the use of half lives to determine the age of a sample?

Description : What is the use of half lives to determine the age of a sample?

Last Answer : Carbon-dating

Determine the lower half-power frequency of a class-C amplifier having upper half-power frequency of 10.025 MHz, a resonant frequency 5 MHz and a circuit Q of 10. A. 1.0025 MHz B. 10.525 MHz C. 0.5 MHz D. 10 MHz

Description : Determine the lower half-power frequency of a class-C amplifier having upper half-power frequency of 10.025 MHz, a resonant frequency 5 MHz and a circuit Q of 10. A. 1.0025 MHz B. 10.525 MHz C. 0.5 MHz D. 10 MHz

Last Answer : A. 1.0025 MHz

Is it possible to solve a magic square made up of a system of unknown symbols?

Description : Is it possible to solve a magic square made up of a system of unknown symbols?

Last Answer : No. I could populate a 9×9 magic square with the letters A through I. You would never figure out what numbers were represented by the letters because a 9×9 magic square is not unique.

What is your favourite unknown movie?

Description : What is your favourite unknown movie?

Last Answer : I am a big fan of small movies. Cop Car. Crawl. Dark City. The Adventures Of Baron Munchausen. Bad Times At The El Royale.

What are some unknown facts about your work?

Description : What are some unknown facts about your work?

Last Answer : We can read the barcodes of our competitors.

When writing to an unknown recipient, what is the proper form of address to the person?

Description : When writing to an unknown recipient, what is the proper form of address to the person?

Last Answer : If the person has a position that can be identified: To the General Manager of the Hilton Hotel: or To the Chairman of the Board or To Accounts Receivable:

Help on unknown illness?

Description : Help on unknown illness?

Last Answer : We are not doctors. We cannot help you. Please, see a doctor right away.

My cat gave birth in unknown area?

Description : My cat gave birth in unknown area?

Last Answer : Walk around the neighborhood and talk to people. If, after an hour or two, you get nowhere, then make signs and hang them up.

Do you know why x is the unknown?

Description : Do you know why x is the unknown?

Last Answer : thanks!

Ladies only. Have you ever been bullied and abused by an unknown man, and in a public place?

Description : Ladies only. Have you ever been bullied and abused by an unknown man, and in a public place?

Last Answer : answer:Yes. A lot. I tried for ages to explain the darker side of catcalling to my husband, who simply couldn't understand why I didn't think of it as a compliment. Then one day we were walking ... moments are a bittersweet fun. They shouldn't have to happen, but it's still nice when they do.

Unknown brand of pants, can you figure out what kind?

Description : Unknown brand of pants, can you figure out what kind?

Last Answer : Is this the logo?

Can a person really be considered "famous" if they are virtually unknown outside their country?

Description : Can a person really be considered "famous" if they are virtually unknown outside their country?

Last Answer : answer:Sure. A person can be famous in their own city, even if no one else outside the city has never heard of them. There isn’t a yardstick of “what does famous” mean – there couldn’t be. It’s all relative.

Do feelings of the unknown pressurize your curiosity?

Description : Do feelings of the unknown pressurize your curiosity?

Last Answer : I am trying to decipher what “delving into my personal hard-shell” even means, let alone what “uncharacterized uncertainly” is.

Have you ever felt depressed for unknown reason?

Description : Have you ever felt depressed for unknown reason?

Last Answer : Get your diet sorted out that's one reason it happens to me . It's not uncommon at all for this to happen during your late teens and early twenties. It's been a re-occurring theme in my life ... not always a bad thing, it can be your minds way of getting your attention that something is not right.

What are your favourite lines of unknown or obscure poetry?

Description : What are your favourite lines of unknown or obscure poetry?

Last Answer : answer:It’s impossible to tell what might be considered obscure by others but one of my favorite not very famous lines is: “And I walked abroad in a shower of all my days.” From “Poem in October” by Dylan Thomas

Unknown status of Stuffed Animal?

Description : Unknown status of Stuffed Animal?

Last Answer : Can you post a picture of it?

If an unknown person lost a large amount of money and you have it then what would you do with the money?

Description : If an unknown person lost a large amount of money and you have it then what would you do with the money?

Last Answer : answer:Use it to patch the holes in my jacket. Under the orange tree.