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dexar [7]
3 years ago
10

The time needed for a radioactive sample to decay to one-half of its original activity is called the ________.

Chemistry
1 answer:
belka [17]3 years ago
3 0
The half life is the time needed.
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What do you think are the necessary skills needed by scientists to solve a particular problem?
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The skills required to solve problems are known as analytical skills. You use analytical skills when detecting patterns, brainstorming, observing, interpreting data, integrating new information, theorizing, and making decisions based on the multiple factors and options available.

Explanation:

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The atomic number of polassium and
never [62]

Explanation:

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Therefore Calcium would have a smaller atomic size.

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2 years ago
Aluminum can react with oxygen gas to produce aluminum oxide, what time of reaction is this?
Helga [31]
This is known as a synthesis reaction. A+B->C
Hope this helps!
3 0
3 years ago
Pls help asap!!!!
AVprozaik [17]

Answer: The pressure of the He is 2.97 atm

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_{N_2}+p_{O_2}+p_{He}.

Given : p_{total} =total pressure of gases = 6.50 atm

p_{N_2} = partial pressure of Nitrogen = 1.23 atm

p_{O_2} = partial pressure of oxygen = 2.3 atm

p_{He} = partial pressure of Helium = ?

putting in the values we get:

6.50atm=1.23atm+2.3atm+p_{He}  

p_{He}=2.97atm

The pressure of the He is 2.97 atm

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3 years ago
8.
Oksi-84 [34.3K]

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900 mg

Explanation:

4 0
3 years ago
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