When heated, mercury (II) oxide (HgO) decomposes to give O2 gas. 2 HgO (s) → 2 Hg (l) + O2 (g) What pressure of oxygen gas collected in atmospheres in a 100 mL container at 22oC can be produced from the complete decomposition of 1.25 g HgO?

Q: If 5.0 moles of O2 and 3.0 moles of N2 are placed in a 30.0 L tank at a temperature of 25° C, what…

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Q: Ammonium carbonate decomposes upon heating according to the balanced equation:(NH4)2CO3(s)----->…

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Q: is the molar mass of a gas that has a sample mass of 3.17 g and occupies a volume of 548 mL at 2.00…

A: Answer  Calculate molar mass of gas   Gas equation   PV   =    nRT…

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

A: Given; N2 (g) + 3 H2 (g)  ➝ 2 NH3 (g) At STP, Volume of nitrogen gas (N2) reacts = 1580 L Volume of…

Q: As 1g of the radioactive element radium decays over 1 year, it produces 1.16 x 10^18 alpha particles…

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Q: A flask weighs 50.1305g when clean, dry, evacuated, 150.2410g when filled with water (density =…

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Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid.…

A: In this question, we have to first find the number of moles of hydrogen gas produced. Given that,…

Q: What mass of neon gas is required to fill a 5.00-L container to a pressure of 1.02 atm at 25 C?

A: Given that,      Volume of container, V = 5.00 L     Pressure of neon gas, P  = 1.02 atm…

Q: 4. Calculate the pressure exerted by 3 moles of oxygen gas, O2, confined to a volume of 510 mL at…

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Q: What is the molecular weight of a gas if a 27.0 g sample has a pressure of 836 mm Hg at 25.0 oC  in…

A: Given, mass of a sample of gas w =27.0 gpressure of the gas P =836 mm Hg =1.1 atm ( 1 atm =760…

Q: In the laboratory, hydrogen gas is usually made by the following reaction: Zn(s) + 2 HCl(aq) →…

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Q: Magnesium can be used as a "getter" in evacuated enclosures to react with the last traces of oxygen.…

A: The given balanced chemical equation is :

Q: 3 H2 (g) + N2 (g) --> 2 NH3 (g)   A 3.22 L vessel containing the hydrogen at 21.1 oC and 6.750 atm…

A: To determine the theoretical yield, we have to know the moles of reactants present initially. To get…

Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: We have given that the CO2 is collected at temperature of 26.0°C T = 26 + 273.15 = 299.15 K…

Q: In the reaction, 2 KClO3(s) ----->2 KCl (s) + 3 O2 (g) how many liters of oxygen measured at STP,…

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Q: Water can react with carbon dioxide to form hydrogen carbanate according to the following chemical…

A: Given :-  H2O (I) + CO2 (g) > H2CO3 (aq)  Mass of H2O = 421 g  Volume = 42.5 L  Temperature =…

Q: Consider the chemical reaction: 2 H2O(1) → 2 H2(8) + O2(8) What mass of H20 is required to form 1.4…

A: According to the law of chemical equivalence, in a chemical reaction, the number of equivalents that…

Q: onsider a 1.53L sample of gaseous SO2 at a pressure of 5.6 x 103 Pa. If the pressure is changed to…

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Q: What is the minimum volume, in mL, of 6.0 M H3PO4 necessary to produce 43.6 L of H2 gas in the…

A: First, calculate the number of moles of H2 gas using the ideal gas equation: PV =…

Q: in chemical analysis of a gas compound, it was observed that it contains 33.0% Silicon (Si) and…

A: Interpretation: The molecular formula of the compound is to be determined from the given…

Q: 4. A certain quantity of helium gas is at a temperature of 27°C and a pressure of 1.00 atm. What…

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Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid.…

A: Given reaction  2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) Volume of H2 gas collected (V) = 283.3 mL = 0.2833…

Q: We find that a mass of 0.896 g of a gaseous compound, containing only nitrogen and oxygen, occupy a…

A: By help of Ideal gas equation, we can calculate the molar mass of given compound , we use Following…

Q: What volume of gas (ml) can be produced the complete reaction of 3.82 g of calcium sulfite with…

A: Given information: 3.82 g of calcium sulfite pressure of the gas is 827 torr Temperature = 44°C =…

Q: if a sample in a 32. 8 L container contains 2.98 mol of hydrogen gas at 35.1 C and 2.3ATM how many…

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Q: Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following…

A: Given,  Total pressure = Ptotal = 754 mmHg  Volume = V = 6.38 L  Vapor pressure of water = 23.8 mmHg…

Q: We find that a mass of 0.896 g of a gaseous compound, containing only nitrogen and oxygen, occupy a…

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Q: What volume of hydrogen gas is produced when 45.3 g of iron reacts completely according to the…

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Q: Heptane (C7H16) gas reacts with oxygen gas to give carbon dioxide gas and water vapor.  If you mix…

A: C7H16+11O2=7CO2+8H2O No excess reagent reagent is used So, now mole of heptane required=1 mole Mole…

Q: What volume of H2 at a pressure of 745 torr and a temperature of 20 °C can be prepared from the…

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Q: Sodium hydroxide reacts with aluminium powder according to the following reaction:   2 NaOH(aq) +…

A: Given reaction; 2 NaOH(aq) + 2 Al(s) + 6H2O(l) → 2 NaAl(OH)4(aq) + 3 H2 (g) Given amount of Al = 5.2…

Q: of H2 gas , Collected over water at the atmospheric pressure of 751mm Hg and a temperature of 21.0…

A: The three gas laws  namely  Boyles law , charles law  and avagadros law  are combined   to obtain…

Q: A 4.17 g4.17 g sample of NH3NH3 gas and a 4.17 g4.17 g sample of HClHCl gas are mixed in a 2.00…

A: GIVEN: NH3 gas sample =  4.17 g HCl gas sample = 4.17g Volume of flask =2.00 L Temperature=25oC To…

Q: To what temperature must a sample of nitrogen at 39.2oC and 0.511 atm be taken so that its pressure…

A: Applying formula P1/T1= P2/T2

Q: Hydrogen gas is collected at 40oC during the following reaction:   Al          +            HCl…

A: From given datas Initially we are calculating number of moles from the balanced equation and then…

Q: At 618 mm Hg, a sample of nitrogen gas occupies 490 mL.  What volume does the gas occupy if the…

A: We know Boyle's Law states that, "The absolute pressure(P) exerted by a given mass of an ideal gas…

Q: Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following…

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Q: Lithium reacts with nitrogen gas according to the following reaction: 6Li(s) + N₂(g)→2Li3N(s) What…

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Q: What pressure permits 25.0 cm3 of neon at 735 mmHg to expand to a volume of 40.0 cm3?

A: The initial volume of neon, V1=25.0 cm3 The initial pressure of neon, P1=735 mmHg The final volume…

Q: 1.115×10-4 mol of an unidentified gaseous substance effuses through a tiny hole in 79.9 s. Under…

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Q: Sodium metal reacts explosively with hydrochloric acid, HCl(aq), as shown in the following chemical…

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Q: Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid.…

A: We have to calculate the partial pressure of hydrogen  gas and mass of Al.

Q: A student adds 3.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the…

A: Given : Mass of dry ice i.e CO2 = 3.00 g And the condition is STP i.e standard temperature of 273 K…

Q: 4 C3H5N3O9(l) + 6 N2(g) -> 12 CO2(g) + 10 H2O(g) + 1 O2(g) a. If 2.00 x 102 g worth of…

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

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Q: If the density of a gas is 1.2 g/L at 745 mmHg and 23.5◦C, what is the molar mass of the gas?

A: An ideal gas equation is derived from the combination of Charle's law, Boyle's law, and Avogadro…

Q: Aluminum, an active metal, reacts with hydrochloric acid in a single displacement reaction.  a)…

A: Aluminum reacts with dilute hydrochloric acid at room temperature. The metal dissolves in…

Q: What is the molar mass of a gas that has a sample mass of 3.17 g and occupies a volume of 548 mL at…

A: Mass of gas sample (mgas) = 3.17 g Volume occupied by sample (Vgas) = 548 mL or 0.548 L Conversion:…

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.