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WINSTONCH [101]
3 years ago
14

Can someone please help!!! Its for chemistry and i looked everywhere even my text book and got no answer

Chemistry
1 answer:
Tatiana [17]3 years ago
8 0
Which question the top part, middle or the 7 covalents?

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N2 + 3H2 → 2NH3 △H = -92 kJ / mol
Tpy6a [65]

Explanation:

<em>(e)the heat is absorbed into the reaction</em> .

3 0
1 year ago
The teal line of the hydrogen emission spectrum has a wavelength of 486.0 nm. A hydrogen emission spectrum has a violet, a blue,
Sloan [31]

Answer:

The correct answer to the following question will be "4.08 × 10⁻¹⁹ Joule".

Explanation:

Given:

Wavelength, λ = 486.0 nm

As we know,

E=h\upsilon =\frac{hc}{\lambda}

On putting the estimated values, we get

⇒          =\frac{1241.5 \ ev\ nm}{486 \ nm}

⇒          =2.554 \ ev

∴ 1 ev = 1.6 × 10⁻¹⁹ J

Now,

Energy, E=2.554\times 1.6\times 10^{-19}

⇒               =4.08\times 10^{-19} Joule

7 0
3 years ago
The kind of energy released when atoms are rearranged to form new bond
Murljashka [212]
The kind of energy released when atoms are rearranged to form new bonds is called Chemical energy.
6 0
3 years ago
When mantle rocks near the radioactive core are heated, they become less dense than the cooler, upper mantle rocks. These warmer
Delicious77 [7]

C) convection cells (currents)

Explanation:

The movement of warmer cooler mantle rocks creating a circulation within the mantle is called a convection cell. These are the forces that drives the plate over asthenosphere.

  • Convection is form of heat transfer predominant in liquids and gases.
  • The mantle is molten and heated from heat within the core and the decay of radioactive bodies.
  • Hot bodies are light and tend to be more buoyant. This causes warm mantle to rise to the surface.
  • The cold part are denser and heavier, they sink in the mix.
  • This creates pockets of circulation pattern within the mantle called convection cells.

Learn more:

Lithosphere brainly.com/question/9582362

#learnwithBrainly

3 0
3 years ago
2 moles of CaCl2 are dissolved in 0.6 liters of water. What is the molarity?
vfiekz [6]

Answer:

b

Explanation:

4 0
3 years ago
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