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Nataly_w [17]
3 years ago
15

Really easy chemistry question

Chemistry
2 answers:
Lady bird [3.3K]3 years ago
7 0

Answer:

The correct answer is B)!

Explanation:

Confirming the answer above. Happy to help!

<h2>c:</h2>
prisoha [69]3 years ago
3 0

Answer:

The answer to your question is: b

Explanation:

a) This option is wrong, these elements have 6 valence electrons not two.

b) This option is right, these elements are located in the 6th group of the periodic table which means 6 valence electrons

c) These option is wrong, these elements gain 2 electrons to achieve stability.

d) These elements do not lose electrons, they gain electrons, this option is incorrect.

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3. A 31.2-g piece of silver (s = 0.237 J/(g · °C)), initially at 277.2°C, is added to 185.8 g of a liquid, initially at 24.4°C,
VARVARA [1.3K]

Answer:

Cp_{liquid}=2.54\frac{J}{g\°C}

Explanation:

Hello,

In this case, since silver is initially hot as it cools down, the heat it loses is gained by the liquid, which can be thermodynamically represented by:

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m_{Ag}Cp_{Ag}(T_2-T_{Ag})=-m_{liquid}Cp_{liquid}(T_2-T_{liquid})

Since no phase change is happening. Thus, solving for the heat capacity of the liquid we obtain:

Cp_{liquid}=\frac{m_{Ag}Cp_{Ag}(T_2-T_{Ag})}{-m_{liquid}(T_2-T_{liquid})} \\\\Cp_{liquid}=\frac{31.2g*0.237\frac{J}{g\°C}*(28.3-227.2)\°C}{185.8g*(28.3-24.4)\°C}\\ \\Cp_{liquid}=2.54\frac{J}{g\°C}

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<h3>What is radiation weighting factor?</h3>

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Learn more about radiation factor here: brainly.com/question/24039736

#SPJ4

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