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What is the half-life of sodium-25 if 1.00 gram of a 16.00-gram sample of sodium-25 remains unchanged?
The half-life of sodium-25 can be determined by the decay of the sample. If 1.00 gram remains from an initial 16.00-gram sample, then 15.00 grams have decayed. This means that 1.00 gram represents ( \frac{1}{16} ) of the original sample, which indicates that the sample has gone through four half-lives (since ( \frac{1}{2^4} = \frac{1}{16} )). Therefore, if the time taken for these four half-lives is known, the half-life can be calculated as one-fourth of that total time.
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What states that a number remains unchanged if it is multiplied by 1?
multiplicative identity
What is 17200000 to the nearest hundred thousands place?
The answer is 17,200,000 (remains unchanged).
What is any number added to zero remains unchanged?
Because 0 has no definite value.
What is 0.25 to the nearest hundredths place?
0.25 to the nearest hundredths place remains unchanged: 0.25
What happens when you multiply both the numerator and denominator of a fraction by 4?
The value of the fraction remains unchanged
If a current passed in spring then?
remains unchanged
If you move an object from the base of a mountain to the top of the mountain what remains unchanged?
The mass of the object remains unchanged, as it depends only on the amount of matter in the object.
Which type of character remains essentially unchanged throughout the action of a stor?
A static character remains essentially unchanged throughout the action of a story. They typically do not undergo significant development or transformation.
What property of a wave remains unchanged when a wave enters a different medium?
The frequency of a wave remains unchanged when it enters a different medium. This means that the number of oscillations or cycles that the wave undergoes per unit time remains the same.
What physical quantity remains unchanged during the flight of an oblique projectile?
The total mechanical energy of the projectile remains unchanged during its flight. This includes both kinetic energy and potential energy.
What states that a number remains unchanged if it is multiplied by 1?
multiplicative identity
What is 17200000 to the nearest hundred thousands place?
The answer is 17,200,000 (remains unchanged).
What happens to the alphabet on Christmas?
It remains intact, unchanged and in uninterrupted use.
Which property of a rock remains unchanged by mechanical weathering?
The mineral composition of a rock remains unchanged by mechanical weathering, which only affects the physical structure of the rock by breaking it into smaller pieces or changing its shape.
What is a condition which remains constant or unchanged in an experiment?
A control variable is a condition that remains constant or unchanged in an experiment. Its purpose is to serve as a baseline for comparison to see the effects of manipulating other variables.
What remains unchanged in transformer action?
In a standard transformer, the ratio of input volts to output volts remains constant.
Is when it remains unchanged in the presence of nitrogen chemical or physical?
When a substance remains unchanged in the presence of nitrogen, it is likely due to its chemical inertness to nitrogen. This can be a result of the substance's molecular structure or its lack of reactivity with nitrogen molecules. Physical properties, such as solubility or vapor pressure, can also play a role in determining whether a substance remains unchanged in the presence of nitrogen.
