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Why will the amount of a radioactive substance never reach zero amount present?
Wiki User
∙ 13y ago
The total amount of radioactive substance will never reach zero because it decays in half-lives. For C-14 is 5730 years, this means that after 5730 years one half of the original material will have decayed. After another 5730 years the remaining radioactive material (1/2 the original) will have decayed by 1/2 once again.
-An infinite crowd of mathematicians enters a bar. The first one orders a pint, the second one a half pint, the third one a quarter pint...
"I understand", says the bartender - and pours two pints.
Wiki User
∙ 13y ago
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When balancing a chemical equation can you adjust the script in a formula?
No. Never change the subscripts because then you are changing the formula of the substance to something else. You can only change the amount of a substance by adding a coefficient in front of the formula. If there is no coefficient, it is understood to be 1.
What is the property that is a quality of a substance that never changes and can be used to indentify the substance?
A quality of a substance that never changes is one of the reasons why density is a characteristic property
Is a compound always a mixture?
No. A compound is never a mixture. A compound is a pure substance.
What are the usefulness of density in identification of unknown substance?
Density is useful for identifying an unknown material because it is a physical constant. A physical constant is a unique characteristic of the material in question. This constant never change or vary with the shape or amount of the material/substance.
Why is density is a useful physical property for identifying substances?
Density is useful for identifying an unknown material because it is a physical constant. A physical constant is a unique characteristic of the material in question. This constant never change or vary with the shape or amount of the material/substance.
Where would a person have the least amount of mass at sea level or the moon?
Neither. Mass, is your total amount of substance, mass never changes.
Heat never of itself flows from a cold to a hot substance?
Heat can flow from cold to hot substances. It's flow depends on the total amount of heat of the substance not on the temperature. It flows from the substance which has more heat to the substance which has less heat stored in it.
Were can you find a radioactive spider?
There are no radioactive spiders. This is something from a movie, and has never happened. There is no way to find images of radioactive spiders.
How do you use radioactive element in a sentence?
A radioactive element is one that discharges radiation. Uranium is a radioactive element. A radioactive element is very dangerous if you don't have protective clothing. You should never go near a radioactive element.
What did Marie Curie never do?
Bake radioactive ckes.
Which minerals are present in granite but are never present in gabbro?
Never say never, but it's mica.
When balancing a chemical equation can you adjust the script in a formula?
No. Never change the subscripts because then you are changing the formula of the substance to something else. You can only change the amount of a substance by adding a coefficient in front of the formula. If there is no coefficient, it is understood to be 1.
What does hesse mean when he says Siddhartha was never present?
kamala was never present
What is the property that is a quality of a substance that never changes and can be used to indentify the substance?
A quality of a substance that never changes is one of the reasons why density is a characteristic property
Do the use of radioactive isotopes determine the exact age of a rock or the absolute age?
All rocks contain some radioactive heavy nuclei, as time passes the constantly 'break' into smaller nuclei by a process called nuclear fission. The older the rock gets, the lower the concentration of radioactive goes (they never become zero as their rate of decrement alse decreses as the total substance decreases). So you cannot tell if the substance is exactly 1248.5 years old for an instance but but you do have enough information to say it is 1000-1500 years old. For more detailed knowledge you may study 'Kinetics of Chemical Reactions' and 'Nucler Physics' in row.
Is an ionic compound exothermic?
A compound is never exothermic. Its reaction with some other substance is endothermic or exothermic like when calcium oxide reacts with water large amount of heat is evolved.
What does it mean if an element it radioactive?
this is because an element is sometimes never radioactive but one may be made just to be radioactive this is because an element is sometimes never radioactive but one may be made just to be radioactive
