Answer:
The answer to your question is the original dose of Ba-142 was 1184 μg
Explanation:
Data
Total time = 1.25 hours
The Final amount of Ba = 9.25 μg
The Half-life of Ba = 10.6 minutes
Process
1.- Convert total time to minutes
1 h ----------------- 60 min
1.25 h ------------ x
x = 75 min
2.- Draw a table of this process
Final amount of Ba Time
9.25 75 min
18.5 64.4 min
37 53.8 min
74 43.2 min
148 32.6 min
296 22 min
592 11.4 min
1184 0.8 min
Answer:
You can make the ramp really steep and hold the marble at the top of it
Explanation:
Answer:
- <em><u>Option a. no change</u></em>
Explanation:
The question makes sense only if the equation is an equilibrium reaction:
- <em>4A (g) + 5B (g) ⇄ 2C (g) + 7D (g) </em>
This is, A and B react to produce C and D, forward reaction; and C and D react to form A and B, reverse reaction.
Then, you can study the effect of increased pressure using LeChatelier's principle.
To counteract the disturbing effect produced by increased pressure on the equilibrium, the system will react shifting the toward to the side where the pressure could be decreased.
That would be toward the side that has less gas molecules.
Since both sides have 9 molecules (4 + 5 = 2 + 7 = 9), the equilibrium concetrations will not change.
That is represented by the first choice: no change.
We have that
- The Element with 49 protons is Indium
the isotope symbol in the one-line format
- We have that this is a cation
From the question we are told
An ionic isotope has 49 protons, 50 electrons, and 55 neutrons.
• What is the name of the element?
What is the isotope symbol in the one-line format (e.g., hydrogen-2)?
Is this a cation or is this an anion? Explain how you know.
Generally
Generally an isotope is an a variant form of a element bearing different number of Neutrons but same Proton
Therefore
For an isotope with 49 protons, 50 electrons, and 55 neutrons.
- The Element with 49 protons is Indium
the isotope symbol in the one-line format
- We have that this is a cation
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