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Phoenix [80]
3 years ago
12

Describe how physical and chemical change may have affected by temperature

Chemistry
2 answers:
stepladder [879]3 years ago
7 0
The heat changes the physical structure into a chemical structure because some of the cells in the physical structure are removed to make that physical structure a chemical structure
MAXImum [283]3 years ago
5 0
Chemical reaction by temperature can affect the change of matter. If you increase the temp. you increase the reaction rate. Ex. Burning a marshmallow can cause the fire to break down the chemical bonds.

Physical change by temperature can affect depending on pressure. In terms of malleability, a metal being compressed can be shaped into a different object, but the chemical bonds are still the same.
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Read 2 more answers
Si te comes un banano de 125 g, asumiendo que este es 100% potasio, calcula lo siguiente: Determina la cantidad de Kilocalorías
Bond [772]

Answer:

0.0179254 kilocalorías(0,0179254 kilocalorías.)

Explanation:

Paso 1

Encontramos la Energía Calórica del Plátano

Se nos dice que el plátano es 100% potasio, por lo tanto

Fórmula de energía térmica = MCΔT

Dónde

M = Masa de sustancia (gramos)

C = Calor específico (j / g ° c)

ΔT = Cambio de temperatura (Temperatura final - Temperatura inicial) (° C)

Masa de (plátano) potasio = 125g

Calor específico de potasio = 0,75j / g ° C

ΔT = Cambio de temperatura

= 37,3 ° C - 36,5 ° C

= 0,8 ° C

Calor específico del banano

Q = 125 g × 0,75j / g ° C × 0,8 ° C

Q = 75 julios

Por lo tanto, 125 gramos de potasio (plátano) contienen 75 julios de energía.

Paso 2

Convertimos Julios de energía en kilocalorías

1 julio = 0.000239006 kilocalorías

75 julios =

Cruz multiplicar

75 julios × 0.000239006 kilocalorías / 1 julio

= 0.0179254 kilocalorías.

Por tanto, 125 g de plátano contienen 0,0179254 kilocalorías.

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3 years ago
How is an endothermic reaction identified in an equation?
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Answer:

the answer is b

Explanation:

6 0
3 years ago
Will give brainliest :) 100 Points!!!
weqwewe [10]

Answer:

11420.120569

Explanation:

i think idek  of its wrong report my answe

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