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Anton [14]
3 years ago
15

A 20 g piece of metal with specific heat 0.4 J/g.°C absorbs 3.9 kilojoules of heat,

Chemistry
1 answer:
Ket [755]3 years ago
8 0

Answer:

given that

....the mass of the metal is 20g(0.02kg)

....specific heat capacity(c) is 0.4J/g°C

....ΔT=??

heat(Q)=3.9KJ(3900J)

Q=mcΔT

ΔT= Q/mc

.....=3900÷(20g x 0.4J/g°C)

.....=487.5°C

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<span>the elements in groups1a, 2a, 3a have positive charges according to their group numbers</span>
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How does one calculate the pH of a solution? O A. The pH is the product of [H+] and [OH-]. O B. The pH is the negative log of [O
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Answer:

I believe it is A

Explanation:

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The aldol reaction is catalyzed by acid as well as base. What is the reactive nucleophile in the acid-catalyzed aldol reaction
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Answer:

The reactive nucleophile is Ketone.

Explanation:

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4 0
3 years ago
Las Vegas Raiders' running back Josh Jacobs is 72 inches tall and has mass of 100 kg. Los
gladu [14]

Answer:

Josh is running at a speed of 9.09 yards per second.

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This is often synonymous with the component number of electrons in their outermost shell. The valence shell.

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Elements in groups 6 and 7 are electronegative and will have a charge of -2 and -1 respectively.

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learn more:

Periodic table brainly.com/question/2690837

#learnwithBrainly

4 0
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