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Nady [450]
3 years ago
6

Why is Oxygen classified as an element?

Chemistry
2 answers:
UNO [17]3 years ago
7 0


It can be oxygen in only 1 atom. All elements on the periodic table can stand alone in one atom.

(I took a lucky guess, using some of my knowledge about elements )


Pachacha [2.7K]3 years ago
3 0
OXYGEN is an element because
1. it can not be broken
2.it is on the periodic table

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What volume of so2 is produced at 325 k and 1.35 atm when 15.0 grams of hcl reacts with excess k2so3?
Helen [10]
The balanced equation for the above reaction is as follows;
2HCl + K₂SO₃ ---> 2KCl + H₂O + SO₂
stoichiometry of HCl to SO₂ is 2:1
number of moles of HCl reacted - 15.0 g / 36.5 g/mol = 0.411 mol 
according to molar ratio 
number of SO₂ moles formed - 0.411 mol /2 = 0.206 mol
since we know the number of moles we can find volume using ideal gas law equation 
PV = nRT
where
 P - pressure - 1.35 atm x 101 325 Pa/atm = 136 789 Pa 
V - volume 
n - number of moles - 0.206 mol 
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature - 325 K
substituting values in the equation 

136 789 Pa x V = 0.206 mol x 8.314 Jmol⁻¹K⁻¹ x 325 K 
V = 4.07 L 
volume of SO₂ formed is 4.07 L


8 0
3 years ago
(40) If a hypothesis is proven correct, a theory is formulated.<br><br> True or false
Snezhnost [94]

Answer: False, I believe.

Explanation: If a Hypothesis is proven correct, then another experiment to strengthen that Hypothesis is should be done.

8 0
3 years ago
Do oxygen atoms become more stable or less stable when oxygen forms compounds? Explain
4vir4ik [10]
They become more stable because they achieve a full outer shell of valence electrons with the magic number of 8.

5 0
3 years ago
Read 2 more answers
Use the solubility generalizations on the information page to predict if one or more precipitates will form when aqueous solutio
neonofarm [45]

Answer:

3 (NH4)2SO4(aq) + 2 Al(NO3)3(aq) → 6 NH4NO3(aq) + Al2(SO4)3(aq)

Explanation:

In solubility rules, all ammonium and nitrates ions are solubles and all sulfates are soluble except the sulfates that are produced with Ca²⁺, Sr²⁺, Ba²⁺, Ag⁺ and Pb²⁺. That means the NH4NO3 and the Al2(SO4)3 produced are both <em>soluble and no precipitate is predicted. </em>

The reaction is:

<h3>3 (NH4)2SO4(aq) + 2 Al(NO3)3(aq) → 6 NH4NO3(aq) + Al2(SO4)3(aq)</h3>
6 0
3 years ago
To fine the number of neutrons in an atom, subtract its_____
storchak [24]

a is the answer hope this helps

3 0
3 years ago
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