A small sample of helium gas occupies 6 mL at a temperature of 2.5 C. At what temperature does the volume expand to 9 mL? * O 184K O 413K O 447K O 199K 37.5K

Q: NaN3(s) → 2 Na(s) + 3 N2(g) 2 What mass of sodium azide (NaN3 with MM =65.02 g/mol) would be…

A: The balanced Chemical equation is - 2NaN3(s) -----> 2Na(s) + 3N2(g) Also following information…

Q: Dimethyl ether, CH3OCH3, undergoes gas phase decomposition to form methane, hydrogen gas, and carbon…

A: Solution - Given :- 1) Weight of dimethyl ether= 58.63g 2) Molar mass of dimethyl ether = (2 X…

Q: 25. 600 mL of a gas at 345 kPa will occupy a volume of (A) 1200 mL (B) 300 mL (C) 690 mL (D) 255 mL…

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Q: A balloon filled with 1.26 g of nitrogen gas has a volume of 1.12 L. Calculate the volume of the…

A: Given, A balloon filled with 1.26 g of nitrogen gas has a volume of 1.12 L.

Q: MN %24 A certain mass of nitrogen gas occupies a volume of 1.56 L at a pressure of 6.81 atm. At what…

A: Using the relation of P1V1= P2V2 ,  We can find the final pressure at which gas expand.

Q: mass of sample  0.309 g ambient pressure  724.8 mmHg  volume of gas  96.7 mL room temperature…

A: Here, the required chemical equation is given below: KClO4 = KCl + 2O2 Molecular weight of KClO4 =…

Q: A weather balloon ascends to an altitude at which T=226 K and P=0.26 bar. If the balloon had an…

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Q: A dusty tank containing 2.23 grams of an unknown gas was found in a cellar. What is the type of gas…

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Q: Small quantities of H2 gas can be collected by adding HCl to Zn.  A sample of 195 mL of H2 gas was…

A: Since the total pressure given = 753 mm Hg  Hence the total pressure = partial pressure of H2 +…

Q: If 65 grams of Zn are reacted with excess HCI, approximately what volume of H2 gas will be produced…

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Q: For the reaction 14/6 C ⟶ 14/7 N + ?, if 100.0 g of carbon reacts, what volume of nitrogen gas (N2)…

A: The equation connecting the temperature, pressure, volume, and number of moles of an ideal gas is…

Q: The combustion of octane, C,H2, proceeds according to the reaction shown. 18 2 C3H13(1) + 25 0,(g) -…

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Q: A sample of krypton gas collected at a pressure of 1.41 atm and a temperature of 21.0 °C is found to…

A: Ideal gas equation is  PV = nRT  PV = (w/M)RT      [ * n = w/M ]  Here ,  P = pressure  V = volume…

Q: a) Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STP, what…

A: (a) Octane combustion:                2 C8H18 (l) + 25 O2 (g) ⇔ 16 CO2 (g) + 18 H20 (l)…

Q: An odorous gas emitted by a hot spring was found to effuse 2.92 times slower than helium. What is…

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Q: A sample of methane gas collected at a pressure of 715 mm Hg and a temperature of 286 K has a mass…

A: Given :-  Pressure of gas = 715 mm Hg  Temperature = 286 K  Mass of CH4 gas = 13.6 grams  To be…

Q: To what temperature must a balloon, initially at 25C and 2.00 L, be heated to in order to have a…

A: The gases obey the three ideal gas laws are Boyle's Law, Gay Lussac Law, and Charles Law. These laws…

Q: What volume would 2.0 moles of a gas occupy at 273K and 1.0atm? OA. 22.4L ОВ. 11.2L OC. 44.8L…

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Q: If p= 782.4mmHg, Find V if n= 0.102mol; T= 26.2 C

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Q: A 3.76 g sample of a noble gas is stored in a 2.00 L vessel at 874 torr and 25°C. What is the noble…

A: Given data is as follows: The mass of the noble gas sample = 3.76 g The volume of the vessel = 2.00…

Q: Dimethyl ether, CH;OCH3, undergoes gas phase decomposition to form methane, hydrogen gas, and carbon…

A: First calculate the moles of Dimethyl ether :  Molar mass of Dimethyl ether = 46.07gmol-1  Moles of…

Q: 10. A 1.65-g sample of Al is reacted with excess HCl and the hydrogen produced is collected over…

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

A: The partial pressure of O2, PO2, and the number of moles of O2 is calculated as shown below.…

Q: A balloon is filled with neon gas. If the balloon were cooled, which of the following would result?…

A: For the ideal gas, the temperature pressure and the volume are related to the ideal gas equation.…

Q: What is the volume, in liters, occupied by a mixture of 23.4 g Ne(g) and 40.1 g Ar(g) at 7.15 atm…

A: Solution

Q: A 212 L sample of a gas exerts a pressure of 42.4 kPa. If its volume is expanded to 319 L, what will…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Water Vapor Magnesium metal is reacted with hydrochloric acid to produce hydrogen gas. A sample of…

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Q: A reaction at 20.0 °C evolves 863. mmol of dinitrogen difluoride gas. Calculate the volume of…

A: Given, P=1 atm , T= (20+273)K = 293 K, n=863 mmol =0.863 mol Ideal gas equation is PV=nRT

Q: A small sample of helium gas occupies 6 mL at a temperature of 2.5 C. At what temperature does the…

A: Charles law :-  According to Charle's law , " at constant pressure the volume of gas is directly…

Q: 4. A sample of 3.30 g of an ideal gas at 150 °C and 1.25 atm pressure has a volume of 2.00 dm. What…

A: Given mass =3.30 g (V) Volume =2.00 dm3 ->2.00 l (P)Pressure =1.25 atm (T) Temperature =150oc…

Q: Part C If 0.130 mol of N2 gas effuses through a small hole over the course of one hour, calculate…

A: Graham's law of effusion states that the rate of effusion of 2 gases are inversely proportional to…

Q: le of helium gas occupies 0.315 L at 300 kPa. More pressure is applied from the surroundings and the…

A: The quantitative relationship between volume and pressure is determined by Boyle’s law. It was given…

Q: A 2.00 L pocket of air at sea level has a pressure of 100 kPa.  Suppose the air pocket rises and…

A: Initial volume = V1 = 2.00 L Initial pressure = P1 = 100 kPa   Volume after expansion (final volume…

Q: Consider the reaction: 2 NiO(s) → 2 Ni(s) + O2(g). If oxygen is collected over water at 40.0oC and a…

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Q: Mass KCIO,= 0.25g Mass empty test tube= 17.00g Mass test tube +kcl = 17.15g P = 740mmHg P =17.5mmHg…

A: Given that: Mass KClO3 = 0.25g Mass empty test tube= 17.00g Mass test tube +KCl = 17.15g Patm = 740…

Q: Oxygen was discovered by decomposing mercury (II) oxide. HgO(s) --> Hg (l) + O2(g) What volume of…

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Q: A 5.0-L sample of sulfur hexafluoride (SF6) is stored at a temperature of 250.0 K and a pressure of…

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Q: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

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Q: The density of NO gas at 16°C and 1.27 atm is O a. 1.61 g/L. O b. 1.71 g/L. O c. 1.98 g/L. O d. 2.36…

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Q: 7. A sample of helium gas at 22.°C and 1.00 atm occupies a volume of 2.54 L. What volume will it…

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Q: In one demonstration of this reaction, 36.00 mL of H2 are collected over water at 25°C. Atmospheric…

A: Here given, Pressure (P) = 749 mmHg = (749/760) atm = 0.9855 atm Volume (V) = 36 mL = 0.036 L…

Q: The density of a noble gas is 2.71 g L-1 at 3.00 atm and 0 °C. What is the gas? Ar Не Ne Хе O Kr

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Q: Argon gas exerts 1.06 atm pressure at 290 K. Determine its density in g/L

A: We have to find the density in g/L of Argon, Pressure (P) = 1.06 atm Temperature (T) = 290 K Density…

Q: A self-contained underwater breathing apparatus (SCUBA) uses canisters containing potassium…

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Q: 1. A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 330. K, this sample…

A: given Pressure = 150 kPa Temperature  = 330 K Volume  = 3.5 L

Q: Calculate the density of nitrogen dioxide gas at 0.6990atm and 53.0 degree Celcius. A) 1.20e+00 g/L…

A: Density of a gas is given by the expression. d=PMRT where P is the pressure of gas in atm, M is the…

Q: A sample of neon gas at 7.0 °C and a volume of 10.0 L is heated to 147 °C. What is the volume of the…

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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.