Part A A weather balloon has a volume of 890 LL when filled with helium at 9 ∘C∘C at a pressure of 320 Torr.  What is the final volume, in liters, of the balloon, where the pressure is 0.23 atmatm and the temperature is -25 ∘C∘C, when nn does not change?   Express your answer to two significant figures and include the appropriate units.     Part B    In 1783, Jacques Charles launched his first balloon filled with hydrogen gas, which he chose because it was lighter than air. The balloon, which had a volume of 31 000 LL at STP, reached an altitude of 1000 mm, where the pressure was 663 mmHgmmHg and the temperature was -3 ∘C∘C.

Q: Choose the statement that explains the difference between the first ionization energy of first…

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Q: If 3.50 g sample of acetylene (C2H2) is burned in excess oxygen, how many liters of CO2(g) can be…

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Q: During the decomposition of CaO2(s) into Ca(s) and O2(g), 100.0 mL of gas is collected by the…

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Q: Diagram and label the hydrogen bond between two molecules of ammonia, NH3.

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Q: A sample of gas in a balloon has an initial temperature of 8.0 °C and a volume of 1.69x103 L. If the…

A: Given : initial temperature T1 = 8.0 C + 273 = 281 K Final temperature T2 = 73 C + 273 = 346 K…

Q: Oxygen gas reacts with powdered aluminum according to the following reaction:…

A: The given balanced chemical equation is 4Al(s)+3O2(g)→2Al2O3(s)The mass of aluminium reacts = 54.1…

Q: 200 of N 2 gas react with 300mL H 2 gas to form ammonia via the equation N 2(g) +3H 2(g) ----> 2NH…

A: Given: Reaction: N2 (g) + 3H2 (g) → 2NH3 (g) Volume of N2 = 200 mL Volume of H2 = 300 mL Volume of…

Q: A helium-filled weather balloon has a volume of 802 L at 16.9°C and 751 mmHg. It is released and…

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Q: The combustion of octane, C8H18 , proceeds according to the reaction shown. 2C8H18(I) + 25 O2…

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Q: A gas‑filled weather balloon has a volume of 50.0 L at ground level, where the pressure is 771…

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Q: The combustion of octane, C, H, proceeds according to the reaetion shown. 18 2 C,H18() + 25 O,(g) →…

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Q: A helium-filled weather balloon has a volume of 584 L at 16.9°C and 755 mmHg. It is released and…

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Q: A sample of gas contains 0.1600 mol of N2(g) and 0.4800 mol of H2(g) and occupies a volume of 27.7…

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Q: 2.5 L of octane gas, C8H18, is combusted with 20.5 L of oxygen gas and ignited. What volume of…

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Q: A sample of nitrogen gas in a 1.94-L container exerts a pressure of 1.21 atm at 33 ∘C. What is the…

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Q: 4Al(s)+3O2(g)→2Al2O3(s) What volume of O2 gas, measured at 783mmHg and 18∘C, is required to…

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Q: When 101 g of KOH is added to a 3.9 L container of O3 at 25°C and a pressure of 66 atm, the…

A: The given reaction is: 5O3(g) + 2KOH(s) → 2KO3(s) + 5O2(g) + H2O(g) Determination of initial mol of…

Q: For many purposes we can treat nitrogen (N₂) as an ideal gas at temperatures above its boiling point…

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Q: Oxygen gas reacts with powdered aluminum according to the reaction: Al(s) + O₂(g) → Al₂O3(s) What…

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Q: A large balloon has an original volume of 1.0 m3 when it is released from the ground.  When the…

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Q: A sample of gas contains 0.1300 mol of N₂(g) and 0.2600 mol of H₂(g) and occupies a volume of 17.5 L…

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Q: Calculate the density of fluorine gas (in g/L) at 35.0∘∘C and 785mmHg.

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Q: A sample of magnesium metal reacts completely with an excess of hydrocholoric acid: Mg(s) + 2…

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Q: A helium-filled weather balloon has a volume of 762 L at 18.9°C and 752 mmHg. It is released and…

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Q: A sample of gas contains 0.1700 mol of N2(g) and 0.5100 mol of H2(g) and occupies a volume of 34.1…

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Q: A container is filled with 0.661 gg of O2O2 at 5∘C∘C and 848 mmHgmmHg .   What is the volume, in…

A: Given: mass of O2=0.661 gTemperature(T)=5oC                            =(5+273) K…

Q: weather balloon is filled with helium to a volume of 355 LL at 16 ∘C∘C and 761 mmHgmmHg . The…

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Q: A mass of 7.24 g carbon monoxide is reacted with 5.21 g hydrogen to form methanol. CO(g) + 2 H₂(g) →…

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Q: What volume of NH3(g) can be produced from the complete decomposition of 10.5 grams (NH4)2CO3 at a…

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Q: A sample of gas in a balloon has an initial temperature of 27 ∘C and a volume of 1800 L . If the…

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Q: Zinc reacts with hydrochloric acid to produce hydrogen gas (as shown by the following equation). If…

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Q: Liquid oxygen was first prepared by heating potassium chlorate in a closed vessel to obtain oxygen…

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Q: A sample of gas contains 0.1900 mol of HCl(g) and 9.500×10-2 mol of Br2(g) and occupies a volume of…

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Q: A piece of dry ice (solid carbon dioxide) with a mass of 25.0 g sublimes (converts from solid to…

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Q: A closed vessel of fixed volume contains 20.0 g of CO2(g) exerting a pressure of 2.25 atm. Some…

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Q: A reaction between liquid reactants takes place at - 16.0 °C in a sealed, evacuated vessel with a…

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Q: A reaction between liguld reactants takes place at -8.0 °C In a sealed, evacuated vessel with a…

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Q: The mass of a sample of gas is 827 mgmg. Its volume is 0.270 LL at a temperature of 88 ∘C∘C and a…

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Q: The gas in a 1550 mL balloon at sea level has a pressure of 755 mmHg, and 26.0 ℃. If the balloon…

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Q: 233 mL nitrogen gas reacts with 583 mL hydrogen gas. Both gases are at the same temperature and…

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Q: A helium-filled balloon of the type used in long-distance flying contains 490,000 ft³ (1.4 x 107 L)…

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Q: If water is added to magnesium nitride, ammonia gas is produced when the mixture is heated. Mg3N2(s)…

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Q: Consider the unbalanced chemical equation below: CaSiO3 (s) + HCl (g) --> CaCl2 (aq) + SiCl4 (g) +…

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Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

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Q: Consider the reaction:  Zn(s) + 2 HCl(aq) --> ZnCl2(aq) + H2(g)   The hydrogen gas is to be…

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Q: What pressure of H, gas is produced if 42.28 g of Al is reacted with excess HCl in a sealed 15.1 L…

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Q: A sample of gas at 830.0 mmHg and occupying a volume of 12.66 L has an increase in pressure to…

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Q: Consider the following balanced equation. 4 FeS2 (s) + 11 O2 (g) → 2 Fe2O3 (s) + 8…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.