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Delvig [45]
3 years ago
7

The half-life of cobalt-60 is 5.26 years. If a sample originally contained 220 grams of this isotope, how many grams would be le

ft after 10.52 years?
Chemistry
1 answer:
ser-zykov [4K]3 years ago
7 0

Answer:

Question Answer

The half-life of cobalt-60 is 5.26 years. How many half-lives have passed in 10.52 years? 2

12.5% of a radioactive sample are left. How many half-lives have passed? 3

After 3 half-lives, how much of a 400 gram sample of radioactive uranium remains? 50g

Explanation:

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A temperature regime that experiences consistent high temperatures with little seasonality is the <u>equatorial</u>.

<h3>What is temperature regime?</h3>

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Mesic. At a depth of 50 cm from the soil surface or at a dense, lithic, or paralytic contact, whichever is shallower, the difference between the mean summer and mean winter soil temperatures is greater than 6° C and the mean annual soil temperature is 8° C or higher but lower than 15° C.

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The heat flux, or the rate of heat transfer per unit area, is measured in watts (Watts) only A. TRUE B. FALSE
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Answer: The given statement is false.

Explanation:

Heat flux is defined as the flow of heat or energy per unit time in per unit area. S.I. unit of heat flux is watts per square meter.

Heat flux is represented by the symbol \phi _{q}.

So, it means heat flux is not measured in watts only as it includes per unit area also.

Therefore, we can conclude that the given statement heat flux, or the rate of heat transfer per unit area, is measured in watts (Watts) only, is false.

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Explanation:

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