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145g of Potassium Oxide ( K2O )
contains a mass of 24.6279566g of Oxygen ( O )
& a mass of 120.3705041g of Potassium ( K )24.6279566g O + 120.3705041g K2 = 144.9984607g K2O * Potassium Oxide (K2O)- 94.195 g/mol
* Oxygen ( O )- 15.999 g/mol
* Potassium ( K )- 39.098 g/mol ( K2 ) - 78.196
145g x (1mol/94.196g) = 1.539343497mol K2O 145g K2O = 1.539343497 mol K2O Please note the concept: K2O has a Molar Ratio of 1 Oxygen:2 Potassium
So... 1.539343497 mol K2O is representative of
(1 x 1.539343497 mol) of Oxygen &
(2 x 1.539343497 mol) of Potassium 1.539343497mol O x [ ( 15.999g O ) / ( 1mol O) ] = 24.6279566g O and 1.539343497mol K x [ ( 39.098 g K ) / ( 1mol K ) ] x [ ( 2mol K ) / ( 1mol K ) ] =
120.3705041g K2 Please Note: the Molar Ratio ex: (2mol/1mol) etc. is the last step 24.6279566g O + 120.3705041g K2 = 144.9984607g K2O only a 0.001062% of error (some percent of error is always present no matter what)
Percent Error is calculated by
%Error= [ ( experimental value - accepted value ) ] x100%
What else can I help you with?
Mercury oxide is heated to form oxygen?
A chemical reaction happens when mercury is heated and reacts with oxygen. This reaction results in the creation of mercuric oxide, an orange or red compound.
Potassium plus oxygen equals?
It equals into hydrogen gas (which is automatically ignited by the reaction's heat) and potassium hydroxide, which is instantly dissolved in the unreacted water. It doesn't equal the world's safest reaction, however. Wear safety goggles and the proper gear.
A 2.50 liter sample of a colorless gas at STP decomposed to give 2.50 liters of nitrogen gas and 1.25 liters of oxygen at STP. what is the colorless gas?
The colorless gas is likely nitrous oxide (N2O) because it decomposed into nitrogen gas and oxygen gas, which are the components of nitrous oxide. The balanced chemical equation for the reaction is 2N2O -> 2N2 + O2.
How is oxide ion formed?
Oxide ions are formed when an oxygen atom gains two electrons to achieve a full outer electron shell. This results in a stable oxide ion with a 2- charge. Oxide ions are commonly found in compounds like metal oxides and are an important component in many chemical reactions.
What happens when lead nitrate crystals are heated?
When lead nitrate crystals are heated, they undergo a decomposition reaction, releasing nitrogen dioxide gas, oxygen gas, and leaving behind lead(II) oxide as a residue. This reaction can be represented by the equation: 2Pb(NO3)2(s) → 2PbO(s) + 4NO2(g) + O2(g).
What is the formula for potassium and oxygen to give potassium oxide?
K2O is potassium oxide
What is the color of Potassium oxide?
When freshly cut it is silvery in colour but it quickly tarnished as it reacts with oxygen in the air. all alkali metals give characteristic flame colour wich are used to identify them potassium has the colour LILAC
Which does not give oxygen on heating?
Mercury(II) oxide does not give off oxygen when heated; instead, it decomposes into mercury and oxygen gas.
What will react with copper to give us copper oxide?
oxygen
Why do potassium oxide and potassium chloride give off the same colour of light in a flame test?
Potassium ions are responsible for the characteristic violet color observed in flame tests. Both potassium oxide and potassium chloride contain potassium ions that emit the same color of light when heated in a flame due to the same electronic transitions in the potassium atoms.
How many moles of potassium chlorate are needed to give 1.50 moles of oxygen?
The answer is 1 mole potassium chlorate.
Is potassium hydroxide contains potassium oxygen and helium?
NO!!! Potassium hydroxide contains;- 1 X potassium(K) 1 x Oxygen (O) 1 x Hydrogen (H). To give the formula 'KOH'. NB Helium is 'He'. It is the most unreactive element of all. It remains in the monatomic gaseous state. So it is not part of potassium hydroxide.
Is magnesium oxide a good conductor?
yes. magnesium oxide is a good conductor . It ionise to give magnesium and oxygen ions.
Does mercuric oxide decompose on heating?
Mercuric oxide decomposes upon heating to give off mercury and oxygen.
Mercury oxide is heated to form oxygen?
A chemical reaction happens when mercury is heated and reacts with oxygen. This reaction results in the creation of mercuric oxide, an orange or red compound.
Will calcium chloride give calcium oxide when heated?
No, calcium chloride will not give calcium oxide when heated. Calcium chloride is a salt compound, while calcium oxide is a different compound formed by heating calcium carbonate. Heating calcium chloride will decompose it into calcium chloride and release chlorine gas.
Potassium plus oxygen equals?
It equals into hydrogen gas (which is automatically ignited by the reaction's heat) and potassium hydroxide, which is instantly dissolved in the unreacted water. It doesn't equal the world's safest reaction, however. Wear safety goggles and the proper gear.
