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Alexxx [7]
3 years ago
6

How much heat (in joules) is required to completely melt 10.00 g of ice starting at 0 oc?

Chemistry
1 answer:
Yuri [45]3 years ago
3 0
/////// 400 cal ///////
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Why do electrons transition between energy levels within the atom, and how do we detect these transitions?
Sedaia [141]

Answer:

See explanation

Explanation:

Electrons transition between energy levels in an atom due to gain or loss of energy. An electron may gain energy and move from its ground state to one of the accessible excited states. The electron quickly returns to ground state, emitting the energy previously absorbed as a photon of light. The wavelength of light emitted is measured using powerful spectrometers.

Atoms can be excited thermally or by irradiation with light of appropriate frequency.

7 0
3 years ago
What are the wind belts that extend 60 degrees latitude
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Why does the amount of energy available change as you move from one trophic level to the next?
olga_2 [115]

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6 0
3 years ago
Read 2 more answers
A partir de 140 g de n2 y una cantidad de h2 se obtuvo 153G de NH³. Cual es el % de rendimiento de la reacción química
DiKsa [7]

Respuesta:

90.0 %

Explicación:

Paso 1: Escribir la ecuación química balanceada

N₂ + 3 H₂ ⇒ 2 NH₃

Paso 2: Calcular el rendimiento teórico de NH₃ a partir de 140 g de N₂

En la ecuación balanceada, participan de N₂: 1 mol × 28.01 g/mol = 28.01 g y de NH₃: 2 mol × 17.03 g/mol = 34.06 g.

140 g N₂ × 34.06 g NH₃ /28.01 g N₂ = 170 g NH₃

Paso 3: Calcular el rendimiento porcentual de NH₃

El rendimiento experimental de NH₃ es 153 g. Podemos calcular el rendimiento porcentual usando la siguiente fórmula.

R% = rendimiento experimental / rendimiento teórico × 100%

R% = 153 g / 170 g × 100% = 90.0 %

4 0
3 years ago
45.89 g of Hydrogen atoms contains how many moles of Hydrogen
Oksi-84 [34.3K]

2.63 g

Explanation:

One way to approach this problem is to determine the percent composition of hydrogen in water.

5 0
3 years ago
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