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Sidana [21]
3 years ago
5

Assignment Directions: Pick one of the following chemists and perform a bit of research on him/her. Answer the following questio

ns. Alice Hamilton             Rosalind Franklin Marie Curie             Gertrude B. Elion Ada Yonath             Henry Cavendish Robert Boyle             Antoine Lavoisier Mario J. Molina             Svante Arrhenius
Chemistry
1 answer:
avanturin [10]3 years ago
8 0
Don’t worry about it, let me do your homework!

Born February 27, 1869, Alice Hamilton was an American physician, research scientist, and author who is best known as a leading expert in the field of occupational health and a pioneer in the field of industrial toxicology. She was also the first woman appointed to the faculty of Harvard University.
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How much heat must be removed from 25.0g of steam at 118.0C in order to form ice at 15C
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Answer:

-10778.95 J heat must be removed in order to form the ice at 15 °C.

Explanation:

Given data:

mass of steam = 25 g

Initial temperature = 118 °C

Final temperature = 15 °C

Heat released = ?

Solution:

Formula:

q = m . c . ΔT

we know that specific heat of water is 4.186 J/g.°C

ΔT = final temperature - initial temperature

ΔT = 15 °C - 118 °C

ΔT = -103 °C

now we will put the values in formula

q = m . c . ΔT

q = 25 g × 4.186 J/g.°C × -103 °C

q = -10778.95 J

so, -10778.95 J heat must be removed in order to form the ice at 15 °C.

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