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Viefleur [7K]
3 years ago
15

The table below lists the densities of some common materials at 20 degrees Celsius.

Chemistry
1 answer:
DerKrebs [107]3 years ago
7 0
Mercury would have the greatest density
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How much heat is necessary to raise the temperature of a 15.0 g metal from 15.0 C to 25.0 C if the specific heat of that metal i
Bumek [7]

The solution would be like this for this specific problem:

<span><span>
E</span>=</span><span>mc</span>ΔT<span> <span>
= (</span>15<span> g</span><span>)(</span>1.91<span> <span>J<span><span>g∘</span>C</span></span>)(</span>25<span><span> ∘</span>C</span>−15<span><span> ∘</span>C</span><span>)
</span></span>= 28.65 * 10
= 286.5

<span>

I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

5 0
3 years ago
A. 1720 kJ<br> B. 125.6 kJ<br> C. 3440 kJ<br> D. 4730 kJ
Feliz [49]

Answer:

Q = 3440Kj

Explanation:

Given data:

Mass of gold = 2kg

Latent heat of vaporization = 1720 Kj/Kg

Energy required to vaporize 2kg gold = ?

Solution:

Equation

Q= mLvap

It is given that heat required to vaporize the one kilogram gold is 1720 Kj thus, for 2 kg

by putting values,

Q= 2kg ×  1720 Kj/Kg

Q = 3440Kj

7 0
3 years ago
Need help on this one
mars1129 [50]

Answer:

H2O =water

SO3=Sulfur trioxide

H2SO4 =Sulphuric acid

5 0
3 years ago
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What is a type of fossil from an organism that lived for a short time that is widely distributed, is easy to recognize, and assi
Likurg_2 [28]
B is the correct answer
5 0
3 years ago
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I need yall help with this one and i can make yall brilientist if u get it right plus yall get 50 points
mixas84 [53]

Answer:

D

Explanation:

6 0
3 years ago
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