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3 years ago

A. 207 kJ B. 4730 kJ O C. 9460 kJ O D. 414 kJ

Chemistry

1 answer:

slavikrds [6]3 years ago

3 0

Answer:

C = 9460 Kj

Explanation:

Given data:

Mass of copper = 2kg

Latent heat of vaporization = 4730 Kj/Kg

Energy required to vaporize 2kg copper = ?

Solution:

Equation

Q= mLvap

by putting values,

Q= 2kg × 4730 Kj/Kg

Q = 9460 Kj

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Answer:

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Let's consider the balanced equation for the reaction between HBr(aq) and NaOH(aq).

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<em>Kemmi Major also does a titration. She measures 25.00 mL of unknown concentration H₂SO₄(aq) and titrates it with 0.1000 M NaOH(aq). When she has added 42.18 mL of the base, her phenolphthalein indicator turns light pink. What is the concentration (molarity) of Kemmi's H₂SO₄(aq) sample?</em>

<em />

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