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DochEvi [55]
3 years ago
10

What is the symbol for hydrogen

Chemistry
1 answer:
Kazeer [188]3 years ago
3 0
The symbol for hydrogen is H
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The properties of a substance are not affected by chemical reactions.<br> O True<br> O False
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False

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4. Consider the following data: Metal Mass (9 Cu Specilic Heat_Wg % Temperature, 0,900 0.285 these two metals are placed in cont
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The heat will flow from copper to aluminum because Cu is at higher temperature. The heat liberated is -7.60kJ

When two metals at different temperatures are kept in contact, heat flows from hotter metal to colder metal until thermal equilibrium is reached.

Here Copper is at a temperature of 60 degree Celsius and aluminum is at 40 degree Celsius. Thus, heat will flow from Cu to Al.

In order to calculate the amount of heat liberated following calculations are required.

m1=262 g

T1=87 oC

Cp=0.385 J/g oC

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The heat liberated can be expressed as follows:

Q=mCp(T2-T1)

Q=262 g*0.385 J/goC(11.8-87)oC

Q=-7585 J

=-7.60kJ

To learn more about heat check the link below:

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4 0
8 months ago
What is the ratio of hydrogen atoms to oxygen atoms in a water molecule?
Viktor [21]
2 hydrogen molecules to one oxygen molecule
Remember by H2O since O doesn’t have a number after it you know there is only one oxygen molecule
6 0
3 years ago
Read 2 more answers
How to check atomic mass?​
slavikrds [6]

Answer:

There are multiple ways to check mass but I'll tell you one. Look below

Explanation:

One easy way of checking atomic mass is by adding protons and neutrons.

For example:

We have 5 protons and 4 neutrons.

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I hope this helps (:

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Which group tends not to form ions or react?
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