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saw5 [17]
4 years ago
14

Blocks on the periodic table are formed by elements that have the same atomic mass.

Chemistry
2 answers:
steposvetlana [31]4 years ago
5 0
The answer is False
podryga [215]4 years ago
3 0
False. Elements in each block are organized by their orbital type, which is determined by their highest energy electron.
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nika2105 [10]
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7 0
4 years ago
The half-life of tritium (H-3) is 12.3 years. If 48.0mg of tritium is released from a nuclear power plant during the course of a
Rudiy27

Answer:

The amount left after 49.2 years is 3mg.

Explanation:

Given data:

Half life of tritium = 12.3 years

Total mass pf tritium = 48.0 mg

Mass remain after 49.2 years = ?

Solution:

First of all we will calculate the number of half lives.

Number of half lives = T elapsed/ half life

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Now we will calculate the amount left after 49.2 years.

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At second half life = 24mg/2 = 12 mg

At 3rd half life = 12 mg/2 = 6 mg

At 4th half life =  6mg/2 = 3mg

The amount left after 49.2 years is 3mg.

6 0
4 years ago
What molecule is needed to digest milk?
xxMikexx [17]

Answer:

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4 0
3 years ago
A sample of helium gas has a pressure of 1.20 atm at 22°c. at what celsius temperature will the helium reach a pressure of 2.00
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temperature should be in the kelvin scale,
T1 = 22 °C + 273 = 295 K
substituting the values in the equation 
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3 years ago
A neutron has a positive electrical charge.<br> True or false
liberstina [14]
A neutron has neither a negative or positive charge, it’s neutral
3 0
3 years ago
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