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At STP, 30cm*3 of H2 gas was burnt in excess oxygen gas. if the final volume of gases in the reaction was 100cm*3., what was the initial volume of the oxygen?
At STP the volume = 22.4= 100 × 22.4 = (30 + x) × 22.4100 = 30+ xX = 70= 70cm3
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In the reaction, 150. g of ammonia (NH<sub>3</sub>) were reacted with 150. g of oxygen (O<sub>2</sub>) to produce nitrogen monoxide (NO). How much nitrogen monoxide would be produced?
Mass of Nitrogen monoxide =73.5g
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Nitric acid is formed by the reaction of nitrogen dioxide with water. How many moles of water are needed to react with 8.4 mol of nitrogen dioxide?
3NO2 (g) + H2O (l)------> NO (g) + 2HNO3 (aq)
Accordinng to the equation 3NO2(g) + H2O(l)------gt; NO(g) + 2HNO3(aq) we can find the amount of substance of water: n(NO2) : n(H2O) = 1:3; n(H2O) = n(NO2)*1/3 If the amount...
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what is the expected volume of 10 grams of oxygen gas at STP? given that the volume of 1 mole of a gas at STP is 22.4 Liters
M (O2)=32 /moln=m/Mn (O2)=10/32=0.3 molV (O2) = 0.3 x 22.4 = 6.72 l
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When aluminum reacts with hydrochloric acid, HCl, both aluminum chloride and hydrogen gas are produced. If 108 grams of aluminum is reacted, what volume of gas may be collected at STP?
Solution:Balanced chemical equation:2Al + 6HCl → 2AlCl3 + 3H2According to the equation above: n(Al)/2 = n(H2)/3The molar mass of Al is 27 g/mol.Hence,Moles of Al = (108 g Al) ×...
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The combustion of methane gas is described by the equation CH4+2O2→CO2+2H2O.
What volume of oxygen is needed at STP to combust 4.7 L methane?
How much carbon dioxide will be formed?
CH4+2O2→CO2+2H2O V(O_2 ):V(CH_4 )=2:1 V(O_2)=V(CH_4 )×2=4.7×2=9.4 L V(CO_2 ):V(CH_4 )=1:1 V(CO_2)=V(CH_4 )=4.7 L Answer: V(O2) = 9.4 L, V(CO2) = 4.7 L.
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Ten grams of calcium carbonate was produced when carbon dioxide was added to lime water (calcium hydroxide in solution). What volume of carbon dioxide at STP was needed
CO2 + Ca(OH)2 = CaCO3 + H2Om(CaCO3) = 10.0 g(10 g CaCO3 / 1)(1 mol / 100.1 g)(1 mol CO2 / 1 mol CaCO3)(22.4 L STP / 1 mol) = 2.24 L CO2 STP
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40 grams of N3H4 I’d reacted with excess ClF3. How many grams of HF would you expect to collect if the compounds reacted completely ?
N3H4 + CIF3 = CIFN3H3 + HF.40 x 20 / 46 = 17,3913043 g.
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2.00 grams of magnesium carbonate are reacted with excess hydrochloric acid. If the density of carbon dioxide gas at atmospheric conditions is 24 L/mol, what is the volume of the gas evolved?
The reaction equation:MgCO3 + 2HCl = MgCl2 + CO2 + H2OThe quantity of magnesium carbonate:2.00 g / (84.31 g/mol) = 0.0237 molThe quantity carbon dioxide is the same (according to...
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when nitrogen gas reacts with hydrogen gas,ammonia gas is formed.How many grams of hydrogen gas are required to react completely with 3,5 L of nitrogen at STP?
Solution:A chemical equation must be balanced:N2 + 3H2 = 2NH3According to the reaction equation for 3 mol of H2 is needed 1 moles of N2.Therefore, mass of H2 = V...
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