A sample of 257.0 mL of wet nitrogen gas was collected over water at a total pressure of 759 torr and a temperature of 21.0 °C. (The vapor pressure of water at 21.0 °C is 18.7 torr.) The nitrogen was produced by the reaction of sulfamic acid, HNH2SO3, with 386.7 mL of a solution of sodium nitrite according to the following equation. NaNO2 + HNH2SO3→ N2 + NaHS04 + H20 Calculate what must have been the molar concentration of the sodium nitrite.

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Answer: Volume of CO2 will be calculated using ideal gas equation which is shown below: PV=nRTV=nRTP…

Q: b. How many moles of hydrogen are in this sample?

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

Q: A 2.00 L reaction container at 25.0 °C contains CO2 (g) and O2 (g). The total pressure of the gases…

A: In this question, total volume of the container is to be determined on addition of 15.0 g of…

Q: A sample of CO2 gas at 150.°C has a volume of 350. mL at 760. mm Hg. How many moles of CO2 are…

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: A 2.16 g sample of phosphorus was burned in a large excess of chlorine, and the phosphorus chloride…

A: To Calculate molar mass , we can use the relation that rate of effusion is inversely proportional to…

Q: Tochloric acid, the following tion takes place s) + 2 HCI(aq) → ZNCI2(aq) 1) culate the volume of H2…

A: Given, Temperature  =30 °c = 303 K Mass of Zn = 65.7 g Moles of Zn = mass/Molar mass      =…

Q: Use the References to access important values if needed for this question. Sodium metal reacts with…

A: The pressure of the wet hydrogen gas is the sum of the pressure of the dry hydrogen gas and the…

Q: A sample of volume 18.3 L has a mass of 57.9 g.(a) Is the material gaseous or condensed?(b) If the…

A: Since we know that gases molecules are spread over the entire vessel therefore it has very less…

Q: A sample of nitrogen gas was collected via water displacement. Since the nitrogen was collected via…

A:

Q: sample of oxygen gas was collected by displacement of water in gas collection apparatus. The total…

A: Here we have to use Daltons law- Ptotal=Pwater+Poxygen It is given vapor pressure of water is 22.6…

Q: Oxygen gas can be prepared by heating potassium chlorate according to the following equation:…

A:

Q: A sample of solid potassium chlorate was heated in a test tube and decomposed into potassium…

A:

Q: When 0.681 g of zinc was added to 75.0 mL of 0.3 M hydrochloric acid, hydrogen gas was produced. For…

A:

Q: Hydrogen gas is collected over water at 23.5 °C and an atmospheric pressure of 765 mmHg. Calculate…

A: Hydrogen gas is collected over water at 23.5 °C and an atmospheric pressure of 765 mm Hg. Calculate…

Q: The vapor pressure of liquid carbon tetrachloride, CCI4, is 100. mm Hg at 296 K. A 0.261 g sample of…

A: Here vapour pressure of liquid CCl4  is 100 mm Hg at 296K .Here 0.261 g of CCl4 was placed in 400 ml…

Q: 1. Calculate the number of grams of sodium used in the reaction. (The vap 7 0°C =0035? atm )

A:

Q: A sample of 4.72 mol of krypton is confined at low pressure in a volume at a temperature of 68 °C.…

A: Number of mol of Krypton (initial) = 4.72 mol Temperature = 680C Root-mean square speed formula is

Q: A sample of nitrogen gas kept in a container of volume 2.40 L and at a temperature of 27. °C exerts…

A: Ideal gas equation is  PV = nRT  Where,  P is pressure of the gas  V is volume of the gas n is no.…

Q: In a sealed 250-mL vessel, 0.31 moles of NO and 0.76 moles of O2 are added. The combined gas…

A: The partial pressure of any gas is the product of mole fraction of that gas with total pressure of…

Q: A 2.00 L reaction container at 25.0 °C contains CO2 (g) and O2 (g). The total pressure of the gases…

A: The partial pressure (p) of a gas is related to the total pressure (Pt) of the gas by the mole…

Q: A sample contianing 8.12g of solid CO2 is put in an empty sealed 5.4L container at a temperature of…

A: Given, the amount of CO2 =8.12 gvolume of container =5.4 Ltemperature T =250.1 Kgas constant…

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: The reaction is given as, CaCO3 + 2 HCl →CaCl2 + H2O + CO2

Q: The barometric pressure measured outside an airplane was 245 mmHg. Calcuate this pressure in kPa.

A: Physical chemistry.

Q: Given the reaction: 2 Al (s) + 6 HCI (aq) 2 AICI3 (aq) + 3 H2 (g) A strip of aluminum of unknown…

A: All the required calculations have been done in the following step.

Q: A sample of oxygen gas was collected over water at a barometric pressure of 757.2 mm Hg and a…

A:

Q: Given the reaction: 2 Al (s) + 6 HCI (aq) --> 2 AICI3 (aq) + 3 H2 (g) A strip of aluminum of unknown…

A:

Q: A 2.43 L volume of hydrogen measured at −150. °C is warmed to 100.°C. Calculate the volume (in L) of…

A: Given: Initial Volume V1 = 2.43 L Initial Temperature T1 = -150 oC= 123 K Final Temperature T2 = 100…

Q: A sample of 263.0 mL of wet nitrogen gas was collected over water at a total pressure of 756 torr…

A: Introduction :  Molarity is defined as the number of moles of solute dissolved in one litre of the…

Q: Water can be decomposed by electrolysis to hydrogen gas and oxygen gas. If 2.33 g of water is…

A: Given :  Mass of water = 2.33 g  Volume of flask = 1.00 L  Temperature = 25 °C = 298 K  Vapor…

Q: An empty flask weighs 130.084 g. After vaporization of a sample of volatile liquid at a temperature…

A: Given that, Weight of empty flask = 130.084 g Mass of flask after vaporization = 130.316 g…

Q: (A) A sample of krypton gas at a pressure of 0.917 atm and a temperature of 23.0 °C, occupies a…

A:

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.