Among ²⁸₁₂Mg ²⁴₁₂Mg, <u>²⁴₁₂Mg</u> is more stable.
<h3>Briefly explained</h3>
We can identify which isotope in the pair is more stable. Let's review the criteria that are used to determine a stable isotope. A stable isotope will have more neutrons than protons with a neutron to proton ratio somewhere between one and 1.52 On the high atomic number, we're up to 152 at low atomic numbers were closer to one.
More stable isotopes have an even number of protons and neutrons. And stable isotopes have their proton or neutron number equal to one of these magic numbers.
We have ²⁸₁₂Mg with 16 neutrons and 12 protons with the neutron to proton ratio of 1.33. And we compare that to ²⁴₁₂Mg With 12 neutrons and 12 protons and the neutrons to protons ratio of one. So we do have a relatively small Z value. So the new trying to approach on ratio should be close to one. Wherefore ²⁸₁₂Mg , although both of these are even we do have a pretty high neutron to proton ratio for a low atomic number.
So ²⁸₁₂Mg is likely less stable While²⁴₁₂Mg is more stable.
Learn more about stable isotope
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Answer:
391.46 L
Explanation:
Given:
Initial temperature of the water = 23.4°C
Final temperature of the water = 39°C
Temperature change for the water, ΔT = (39 - 23.4) = 15.6°C
Heat absorbed by the water = 2.55 × 10⁴ kJ = 2.55 × 10⁷ J
Density of the water = 0.998 g/mL
Specific heat of the water, C = 4.184 J/g°C
Now,
The heat absorbed by the water, q = mCΔT
where, m is the mass of the water
Thus,
we have
2.55 × 10⁷ J = m × 4.184 × 15.6
or
m = 390682.45 grams
also,
Density = mass / volume
thus,
0.998 = 390682.45 / volume
or
Volume = 391465.38 mL
or
Volume = 391.46 L
Answer:
The pistil, B.
Explanation:
The seeds are formed from the ovule which is contained in the ovary; all in the base, the pistil.
1. Ur graph should have 2 vertical lines || , of equal height at mass 13 and 15.
2. One, because you have the mass, which in this case is 13 and the other 15, which has the same height. So it must be the isotope. By definition, an isotope has the same number of protons, but different number of neutrons.
3. to solve for fractional abundance, Let x = fraction of element: "I"-13
then fraction of "I"-15 must be 1-x
so you have: 13x + (15<span>)(1-x) = 13
solve for x.</span>
Answer: Correct options are as follows.
- salt is not chemically bonded to water.
- salt and water retain their own chemical properties.
Explanation:
When salt is dissolved in water then it means that it is a physical change as salt has completely dissociated into ions but they are not chemically combined to the water molecules.
As a result, both salt and water will retain their chemical properties.
For example, NaCl when dissolved in water will dissociate as follows.
Only the particles of salt have evenly distributed in water.
And, when a components of a salt chemically combine with another substance then it will form a new compound.
Therefore, we can conclude that salt dissolved in water is a solution, therefore:
- salt is not chemically bonded to water.
- salt and water retain their own chemical properties.
