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qaws [65]
2 years ago
15

Science quiz help plssssss

Chemistry
1 answer:
xxMikexx [17]2 years ago
6 0

Answer:

3. It should restate the question

4. a controlled experiment

5. if I freeze a tennis ball then it will not bounce as high

Explanation:

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What element is represented by [Rn]7s1?
lara [203]

Answer:

Radon

Explanation:

4 0
3 years ago
If 2.8X10⁻¹⁰% of the atoms of a radioactive isotope disintegrate in 1.0 yr, what is the decay constant of the process?
Marizza181 [45]

Decay constant, proportionality between the size of a population of radioactive atoms and the rate at which the population decreases because of radioactive decay.

<h3>What is decay constant value?</h3>

The rate of disintegration is proportional to the number of atoms at any point in time and the constant of proportionality is called the radioactivity decay constant. The radioactive decay constant for Radium B is approximately 4.3 × 10−4 s−1.

<h3>What is decay constant unit?</h3>

Definition. The decay constant (symbol: λ and units: s−1 or a−1) of a radioactive nuclide is its probability of decay per unit time. The number of parent nuclides P therefore decreases with time t as dP/P dt = −λ. The energies involved in the binding of protons and neutrons by the nuclear forces are ca.

Learn more about decay constant here:

<h3>brainly.com/question/16623902</h3><h3 /><h3>#SPJ4</h3>

7 0
1 year ago
Which part of experimental design is most important to a scientist when replicating an experiment? Having exactly the same data
yarga [219]

Answer:

The answer to your question is below:

Explanation:

Having exactly the same data as the previous experiment I think that having the same data as the previous experiment is extremely important but not the most important, for me is the second most important.

Using the same procedure and variables as the previous experiment For me, this is the most importan thing when a scientist is designing an experiment, because if he or she follow exactly the same procedure and variables, then the results will be very close.

Conducting an experiment similar to the previous experiment  This characteristic is important but not the most important.

Using the same laboratory that was used in the previous experiment It is not important the laboratory, if the procedure and variables are the same, your experiment must give the same results in whatever laboratory.

5 0
3 years ago
Read 2 more answers
PLEASE ANSWER
Alchen [17]
The answer is Q because the red it's absorbed by object Q meaning only black will show
6 0
3 years ago
Read 2 more answers
What happens to the size of a metal element as it becomes a cation?
meriva
It decreases because it is losing an electron
3 0
3 years ago
Read 2 more answers
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