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DedPeter [7]
3 years ago
14

 Help ASAP only right answers only no spam don’t answer if you don’t know

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
4 0
The answer is theory :))
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Next to each formula write the number of atoms of each element found in one unit of the compound - sodium sulfide
Fiesta28 [93]
20 atoms i believe is correct 
4 0
4 years ago
If 6.4 miles of Fe react with excess O2, how many miles of Fe2O3 can be formed? 4 Fe + 3 O2 -> 2 Fe2O3
Yuri [45]
I'm assuming that by "miles" you mean moles.

If O2 is the excess reactant, that means Fe is the limiting reactant. That means that the amount of product being formed depends on the amount of Fe reactant present. To calculate the moles of Fe2O3 formed, start with the given 6.4 moles of Fe and use the mole to mole ratio given by the reaction as shown below:

6.4 mol Fe x \frac{2 mol Fe2O3}{4 mol Fe} = 3.2 mol Fe2O3
6 0
4 years ago
What is the atomic number and name of an element that has 15 protons in its nucleus?
just olya [345]

Answer:

phosphorus.

Explanation:

The atomic number of phosphorus is 15 so the protons will be 15.

4 0
3 years ago
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Write the molecular formula for the following compound.<br>​
Sholpan [36]

Answer : The molecular formula of the compound is, C_8H_9O_3N

Explanation :

Molecular formula : It is the representation of substance by the symbols and it denotes the number of atoms of each element present in the compound.

Now count the number of carbon, hydrogen, nitrogen and oxygen atoms present in the given compound.

As we see that in the given compound, there are 8 atoms of carbon element, 3 atoms of oxygen element, 1 atom of nitrogen element, 9 atoms of hydrogen element.

Thus, the molecular formula of the compound will be C_8H_9O_3N

7 0
3 years ago
Air is an example of a mixture because the elements and compounds that make up air retain their individual properties. True Fals
Helga [31]

i believe its true bc ik for sure air is a homogenous mixture

8 0
3 years ago
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