<span>The element that is used in light bulbs as a filament is tungsten - this is almost always the case in halogen and incandescent bulbs. Tungsten is chosen for this purpose because of the fact it can withstand temperatures of up to 4,500 degrees, as well as being incredibly flexible.</span>
Answer:
he amount of heat gained by the water is 1.59 kJ
Explanation:
Relation between heat energy, specific heat and temperature change is as follows
Q = mCΔT
where, Q or q = heat energy
m = mass
C = specific heat =4.186J/g°C
ΔT = (28°C - 25°C) = 3°C
Now, putting the given values into the above formula as follows.
Q = mCΔT
= 127 × 4.186 × 3
= 1594.86 J or 1.59 kJ
Therefore, we can conclude that the amount of heat gained by the water is 1.59 kJ
Answer:
SO2(g) and H2S(g)
Explanation:
Sulphuric acid (H2SO4) is very important in industries and is often referred to as the best chemical due to its multiple uses. It is corrosive and used in making fertilizers and explosives. It can also be used to make paints, detergents etc.
Sulphuric acid reacts with Sodium iodide to give Hydrogen iodide and Sodium hydrogen Sulphate.
NaI (s) + H2SO4 (l) =HI (g) + NaHSO4 (s)
The Hydrogen iodide then reacts with the Sulphuric acid to give Iodine,Hydrogen sulphide and water
HI (g) + H2SO4 (l) = 4I2(s) + H2S (g) + 4 H2O (l)
The sulphuric acid can also undergo reduction reaction with hydrogen iodide to give Iodine, Sulphur dioxide and Water.
2 HI (g) + H2SO4 (l) = I2(s) + SO2 (g) + H2O (l)
Answer:
The concentration is ion dependent
Explanation:
The concentration is dependent on the amount of the ions in the solution. This is the rate-determination factor. For a reaction to precipitate, there should be enough ions in the solution. In addition, the Ksp plays an important factor in the reaction. This happens when the amount of ions formed is derived from a strong ionic solution. This then drives the reaction forward.
<h2>Answer : Electromagnetic energy</h2><h3>Explanation :</h3>
The solar panel usually combines multiple photo voltaic cells. Electromagnetic energy is used to power a solar panel. As the electromagnetic energy or rather radiations from the sun reaches to Earth in the form of radiation which is then collected by these photo voltaic cells. As the term solar energy simply suggests that the energy is coming from the sun. Thus, electromagnetic energy coming from the sun was produced when electric charges inside the sun change their potential energy.
