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stiv31 [10]
2 years ago
7

What does the atomic number of each atom represent?

Chemistry
1 answer:
saw5 [17]2 years ago
6 0
It's the number of Protons of that atom..
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How many atoms of hydrogen are there in 3.0kg of ethane
kvasek [131]
Ethane has the formula C2H6.
From the periodic table:
molecular mass of carbon = 12 grams
molecular mass of hydrogen = 1 gram
Therefore:
molar mass of ethane = 2(12) + 6(1) = 30 grams

This means that each 30 grams of ethane contains 6 grams of hydrogen. To know how many grams of hydrogen are in 3000 grams of ethane (3 kg), we will simply use cross multiplication as follows:
mass of hydrogen = (3000 x 6) / 30 = 600 grams
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3 years ago
Why are gamma rays not able to reflect off a mirrors surface
ElenaW [278]

Answer:

the Ray's go right through it

Explanation:

the Ray's are so small they punch right through them

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2 years ago
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At which electrade in a voltaic cell does redaction always occar?​
yanalaym [24]

Answer:cathode

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What would indicate that a physical change takes place when copper is drawn into wire?
Lina20 [59]

Any change in which the composition of material does not change that is it retains its identity but changes its state or form is known as a physical change.

The properties of metal to draw them into wires is known as ductility.  When a copper is drawn into wire the only change that occurs is change in its shape and size no change will take place into its composition that is the wires are still possessing the properties of copper metal. Thus, a physical change takes place when copper is drawn into wire.

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3 years ago
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Consider the balanced equation below. 4NH3 + 3O2 --> 2N2 + 6H2O What is the mole ratio of NH3 to N2?
AURORKA [14]
The balanced equation given is:
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From this equation, we can note that 4 moles of NH3 are required to produce 2 moles of N2.

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2 years ago
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