Answer:
A chemical change occurred and a gas was produced.
Step-by-step explanation:
If there is no chemical reaction, the <em>Law of Conservation of Mass</em> says that
Total mass = Mass 1 + Mass 2
However, if the two liquids react and give off a gas, then
Total mass = Mass 1 + Mass 2 + Mass of gas
You are not measuring the mass of the gas, so the mass of the liquids after mixing is less than it was before mixing.
For example, if Liquid 1 was a solution of HCl and Liquid 2 was a solution of Na₂CO₃, they would give off CO₂ on mixing. but you would not be measuring the mass of the CO₂.
Answer:
11
Explanation:
the atomic number is the same as the number of electrons
Explanation:
Since, the given reaction is ![U + n \rightarrow Xe + Sr + 2n](https://tex.z-dn.net/?f=U%20%2B%20n%20%5Crightarrow%20Xe%20%2B%20Sr%20%2B%202n)
Sum of masses on both reactant and product side is as follows.
235.043924 + 1.008665 = 139.921620 + 93.915367 + (2 × 1.008665)
= 0.198272 u
As it is known that relation between energy and mass is as follows.
Energy produced = ![\Delta m c^{2}](https://tex.z-dn.net/?f=%5CDelta%20m%20c%5E%7B2%7D)
Since, 1 u = 931.494 MeV/
. Putting this value into the above formula as follows.
Energy produced = ![\Delta m c^{2}](https://tex.z-dn.net/?f=%5CDelta%20m%20c%5E%7B2%7D)
= ![0.198272 \times \frac{931.494}{c^{2}} \times c^{2}](https://tex.z-dn.net/?f=0.198272%20%5Ctimes%20%5Cfrac%7B931.494%7D%7Bc%5E%7B2%7D%7D%20%5Ctimes%20c%5E%7B2%7D)
= 184.69 MeV
As 1 MeV equals
joules.
Hence, 184.69 MeV will be converted into joules as follows.
=
J
=
J
Thus, we can conclude that energy released in this reaction is
J.
Answer:
It's a liquid when it has changed from solid to a liquid state. (You take ice out from the freezer and it turns to water)
Explanation:
Basic chemistry
In fluid dynamics, the wave height of a surface wave is the difference between the elevations of a crest and a neighbouring trough. Wave height is a term used by mariners, as well as in coastal, ocean and naval engineering.