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Eddi Din [679]
2 years ago
9

A radioactive substance of mass 768g has a half life of 3 years. After how many years does it leave only 6g undecayed?​

Chemistry
2 answers:
vagabundo [1.1K]2 years ago
8 0

Answer:

The answer is 21 years.

Explanation:

7×3

sammy [17]2 years ago
5 0

Answer:

hi

good morning

myself veeresh

and you

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alexandr402 [8]

Answer:

A

Explanation:

Because Rainwater can get acidic because of the carbonic acid that it contains

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3 years ago
WILL GIVE BRAINLIEST TO THE BEST ANSWER, AND PLEASE GIVE EXPLANATION!
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3 0
2 years ago
2NO(g) N2(g) + O2(g); Keq = 2.1 × 1030 What does the value of the equilibrium constant indicate?
olga_2 [115]
The equilibrium constant is a value which represents the equilibrium of a reaction. It is a reaction quotient when the reaction reached equilibrium. If Keq is greater than 1, the mixture contains mostly the products. On the other hand, if Keq is less than 1, the mixture contains the reactants. For this case, the mixture contains mostly products.
7 0
3 years ago
An element has an atomic mass number of 16 and an atomic number of 7
Kitty [74]

Answer: Nitrogen

Explanation: Nitrogen has an atomic number of 7 and an atomic mass of about 14 u

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3 years ago
Number of molecules in 2.5 moles of silver
Snowcat [4.5K]

Answer:

1.5×1024 molecules

Explanation:

6 0
3 years ago
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