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aalyn [17]
2 years ago
9

Predict your observation if a magnesium ribbon is put in potassium hydroxide solution and tested with a lighted wooden splinter.

​
Chemistry
1 answer:
koban [17]2 years ago
5 0

mg reacts with the acid and produce visible bubbles of hydrogen gas. they will produce audible pops as the hydrogen ignites. ... Hydrochloric acid is a corrosive liquid. Hydrogen gas is explosive.

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(ii) When shale gas is burned, the hydrogen sulfide reacts with oxygen.
Elenna [48]

Answer:

See explanation

Explanation:

Now , we have the equation of the reaction as;

2H2S(g) + 302(g)------->2SO2(g) + 2H2O(g)

This equation shows that SO2 gas is produced in the process. Let us recall that this same SO2 gas is the anhydride of H2SO4. This means that it can dissolve in water to form H2SO4

So, when SO2 dissolve in rain droplets, then H2SO4 is formed thereby lowering the pH of rain water. This is acid rain.

4 0
2 years ago
The complex ion, [ni(nh3)6] 2+, has a maximum absorption near 580 nm. calculate the crystal field splitting energy (in kj/mol) f
Wewaii [24]
In given data:
maximum absorption wavelength λ = 580 nm = 580 x 10⁻⁹ m
write the equation to find the crystal field splitting energy:
E = hC / λ 
Here, E is the crystal field splitting energy, h = 6.63 x 10⁻³⁴ J.sec is Planck's constant and C = 3 x 10⁸ m/sec is speed of light. 
substitute in the equation above:
E = (6.64 x 10⁻³⁴ x 3 x 10⁸) / (580 x 10⁻⁹) = 3.43 x 10⁻¹⁹J
This crystal field splitting energy is for 1 ion.
Number of atoms in one mole, NA = 6.023 x 10²³ 
to calculate the crystal field splitting energy for one mole:
E(total) = E x NA
             = (3.43 x 10⁻¹⁹) x (6.023 x 10²³) = 206 kJ/ mole



 
5 0
2 years ago
Gordon wrote this passage about mechanical waves for his physics class. But he got most of his facts mixed up. Only one sentence
Zinaida [17]

Answer: The correct answer is "Mechanical waves can apply pressure to and push on objects in their path".

Explanation:

Mechanical wave is wave in which there is an oscillation of the wave. The energy is transferred through a medium. Mechanical waves can apply pressure to and push on their path. Only the energy is transferred not the matter.

Mechanical waves are of three types: Transverse wave, Longitudinal wave and Surface wave. The examples of the mechanical wave are sound wave and water wave.

Sound is a pressure disturbance which travels through a medium. It consists of compression and rarefaction.

The mechanical waves need a medium for their propagation. They travel faster in denser medium.

Therefore, the correct option is (B).

4 0
2 years ago
Read 2 more answers
Combustion of gasoline in automobiles produces poisonous gases. Catalytic converters that contain solid platinum, palladium, and
bagirrra123 [75]
It provides an alternative pathway for the rxn.
5 0
2 years ago
In 1930 the american physicist ernest lawrence designed the first cyclotron in berkeley, california. in 1937 lawrence bombarded
gregori [183]
In, 1937 Lawrence, in operating his cyclotron, bombarded a molybdenum-96 foil with deuterium ions (2h), producing for the first time an element not found in nature. He was initially unaware that the radioactivity produced by the "bombarded foil" was not from molybdenum but from a new, artificial element. It was his cooperation with Italian-American physicist <span>Emilio Segrè </span>that allowed the new element to be discovered. The answer is Technetium: Tc
8 0
2 years ago
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