Answer:
The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid.
Explanation:
Boiling is a physical change and molecules are not chemically altered during the process.
Answer: Option (B) is the correct answer.
Explanation:
Radiation involves transfer of energy or heat with the help of electromagnetic waves.
For example, radiations from Sun help in transfer of energy or heating of object on which it falls. Like, when radiations are falling on a metal rod then after sometime the rod becomes hot due to absorption of radiations from the Sun.
Thus, we can conclude that Sunlight travels through space without the aid of fluids or solids describes how heat is transferred by radiation
Answer:
2VO + 3Fe2O3 —> V2O5 + 6FeO
Explanation:
The skeletal equation for the reaction is given below below:
VO + Fe2O3 —> V2O5 + FeO
We can balance the equation above by doing the following:
There are 2 atoms of V on the right side and 1 atom on the left side. It can be balance by putting 2 in front of VO as shown below:
2VO + Fe2O3 —> V2O5 + FeO
Now, we have a total of 5 atoms of O on the left and 6 atoms on the right side. We can balance it by putting 3 in front of Fe2O3 and 6 in front of FeO as shown below:
2VO + 3Fe2O3 —> V2O5 + 6FeO
Now, we can see that the equation is balanced
Answer:
294,3
Explanation:
While g = 9,81 m/s^2 then:
![E=2[kg]*9,81[\frac{m}{s^2} ]*15[m]=294,3 [J]](https://tex.z-dn.net/?f=E%3D2%5Bkg%5D%2A9%2C81%5B%5Cfrac%7Bm%7D%7Bs%5E2%7D%20%5D%2A15%5Bm%5D%3D294%2C3%20%5BJ%5D)
[J]
Noble gasses I’m pretty sure
