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alexira [117]
2 years ago
7

In fireworks, the heat of the reaction of an oxidizing agent, such as KClO₄, with an organic compound excites certain salts, whi

ch emit specific colors. Strontium salts have an intense emission at 641 nm, and barium salts have one at 493 nm.
(a) What colors do these emissions produce?
Chemistry
1 answer:
Flauer [41]2 years ago
4 0
  • In the visible spectrum, strontium exhibits a red hue at a wavelength of 641 nm in its salts.
  • In the visible spectrum, barium salts emit a green color at a wavelength of 493 nm.
<h3>What is oxidizing agent?  </h3>
  • An oxidizing agent is a substance that obtains or "accepts" or "receives" an electron from a reducing agent in a redox chemical process.
  • Or to put it another way, an oxidizer is anything that oxidizes something else.
  • Halogens, potassium nitrate, and nitric acid are a few examples of oxidizing substances.
  • A reducing agent, also known as a reductant, gets oxidized and loses electrons during a chemical process.
  • The electron donor, or reducing agent, is a substance that is normally in one of its lower potential oxidation states.

Learn more about oxidizing agent here:

brainly.com/question/11952578

#SPJ4

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What is the maximum mass of s8 that can be produced by combining 89.0 g of each reactant?
lidiya [134]

Answer : We can produce 125.7 g of S_{8}.


Explanation : The reaction will be

8SO_{2} + 16H_{2}S -----> 3S_{8} + 16H_{2}O


The molecular mass of SO_{2} is 64.1 g/mol

and molecular mass of H_{2}S is 34.1 g/mol


For every mole of SO_{2} we would need twice of H_{2}S moles, so for every 3 moles of S_{8} we need 16 moles of H_{2}S


Now, we can calculate number of moles S_{8}

2.61 X (3/16) = 0.49 moles


Here, the molecular mass of S_{8} is 256.8 g


multiplying it with the number of 0.49 moles we get, 256.8 X 0.49 = 125.7 g of S_{8}.


Hence, 125.7 g of S_{8} will be produced.

8 0
3 years ago
I NEED HELP PLEASE, THANKS! :)
vaieri [72.5K]

Answer:

This process is known as doping. It can be done by adding either of two types of impurity to the crystal.

(A) By adding electron rich impurities i.e., group 15 elements to the silicon and germanium of group 14 elements.

hope it's helpful

8 0
3 years ago
How many moles of CoH12O6 are consumed<br> if 6 moles of O2 are consumed?
Rashid [163]

Answer:

2

Explanation:

There are 3 moles O2 in 1 mole CoH12O6 so 2 moles are consumed

7 0
3 years ago
Ethanol (c2h5oh) melts at -114°c. the enthalpy of fusion is 5.02 kj/mol. the specific heats of solid and liquid ethanol are 0.9
maria [59]
You'll want to add three amounts of heat. 

(1) Specific heat of lowering the temperature from -135°C to the melting point -114°C
(2) Latent heat of fusion/melting
(3) Specific heat of elevating the temperature from -114°C to -50°C

(1) E = mCΔT = (25 g)(0.97 J/g·°C)(1 kJ/1000 J)(-114 - -135) = 0.509 kJ
(2) E = mΔH = (25 g)(5.02 kJ/mol)(1 mol/46.07 g ethanol) = 2.724 kJ
(3) E = mCΔT = (25 g)(2.3 J/g·°C)(1 kJ/1000 J)(-50 - -114) = 3.68 kJ

<em>Summing up all energies, the answer is 6.913 kJ.</em>
7 0
3 years ago
What nation has attempted to drill through Earth's crust?
timofeeve [1]

Answer:

The Soviet Nation attempted to

4 0
3 years ago
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