An unknown gas has a density of .355g/L at 17 celsius and 189mm Hg. Calculate the molar mass of the gas?  What is the identity of the gas?

Q: If a gas has a volume of 34.5 L at 1020 mm Hg and 25.0C, what is the volume at standard temperature…

A: Given:- For a gas,  Volume (V1)= 34.5L Pressure (P1)= 1020 mm Hg = (1020/760)atm = 1.342 atm…

Q: how many molecules are in the container

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: A newly discovered gas has a density of 2.27 g/L at 26.0 °C and 739 mm Hg. What is the molar mass of…

A: Given: Density of gas = 2.27 g/L. Temperature = 26.0 oC And the pressure of gas = 739 mm Hg.

Q: A sample of gas at 15º C and 1 atm has a volume of 2.58 L. What volume will this gas occupy at 38º C…

A:

Q: What is the molar mass of an unknown gas with a density of 2.20 g/L at 1.00 atm and 25.0 °C?

A: We have to find the molar mass

Q: (a) Calculate the density of NO2 gas at 0.970 atm and 35 °C. (b) Calculate the molar mass of a gas…

A: (a). Using the ideal gas equation, the concentration of NO2 is determined as,

Q: 4.40 L of a gas is collected at 50.0 ᴼC.  What will be its volume when cooled to 25 ᴼC

A:

Q: A newly discovered gas has a density of 2.16 g/L at 26.0 °C and 731 mm Hg. What is the molar mass of…

A: Given: The density of new element,(d)=2.16 g/L The temperature, (T)=26.0 °C=(273.15+26)=299.15 K The…

Q: What is the molar mass of an unknown gas with a density of 4.75 g/L at 3.00 atm and 45.0 °C?

A:

Q: a sample of oxygen gas is confined to a 48.0 L container at 750mm of Hg and 25 celsius. how many…

A: Ideal gas Equation: Any gas is described by using four terms namely pressure, volume, temperature…

Q: (a) Calculate the density of NO2 gas at 0.970 atm and 35 degrees C. (b) Calculate the molar mass of…

A: a.Using the ideal gas equation, the concentration of NO2 is determined as,

Q: An experiment shows that a 113 mL gas sample has a mass of 0.171 g at a pressure of 721 mm Hg and a…

A: given values : volume = 113 mL = 0.113 L pressure =721 mmHg = 721760 atm                  =0.94 atm…

Q: What is the molar mass of a gas if .427 g of the gas occupies a volume of 125 mL at 20.0C and 980…

A: Given data mass of gas : m = 427 g Volume of gas : V = 125 mL = 0.125 L Pressure of gas : P = 980…

Q: A sample of N2 gas has 4.42 moles and occupies 1.06L at 25 degrees Celsius. What volume will it…

A:

Q: A 2.77-g sample of an unknown gas has a volume of 806 mL and a pressure of 987 mmHg at 36.4 °C.…

A: Given: The pressure=987 mmHg=1.298 atm. The temperature, (T)=36.40C=(36.4+273.15)=309.55 K. The…

Q: What is the molar mass of an unknown gas with a density of 2.55 g/L at 1.00 atm and 25.0 °C?

A: We have to find What is the molar mass of an unknown gas with a density of 2.55 g/L at 1.00 atm and…

Q: What is the molar mass of an unknown gas with a density of 3.50 g/L at 1.00 atm and 25.0 °C?

A: Given :-  density of gas = 3.50 g/L  pressure = 1.00 atm  temperature = 25.0°C  To calculate :-…

Q: What is the molar mass of an unknown gas with a density of 2.00 g/L at 1.00 atm and 25.0 °C?

A:

Q: A vessel contains 2.5 L of H2 gas at 350mm Hg and 25.0 celsius. Calculate the pressure of the gas in…

A: Here is the data given V1=2.5 LP1=350 mmHgT1=25+273     = 298 KV2=7.0LP2= unknownT2=0+273     = 273…

Q: A gas at 25.0 degrees Celcius and 680 mmHg occupies 345 mL. What is the volume at

A: Given, Initial Temperature = 25.0°C Initial Pressure = 680 mm Hg  Initial Volume = 345 mL  Final…

Q: An unknown diatomic gas has a density of 1.696 g/L at STP. What is the identity of the gas?

A: STP refers to standard temperature and pressure. Standard temperature is (0oC) 273K Standard…

Q: An anaesthetic gas contains 64.81% carbon, 13.60% hydrogen, and 21.59 % oxygen by mass, If 2.00 L of…

A: Given: Volume of gas = 2.0 L Temperature = 25 oC Pressure = 0.420 atm mass =2.57 g % of carbon =…

Q: What is the volume of the following sample of gas at STP? 0.236 H2   Express the volume to three…

A:

Q: 4. A 30.6 g sample of gas occupies 22.414L at STP. What is the molecular weight of this gas?

A: As per the ideal gas equation: PV=nRT where, P = Pressure of gas V = Volume occupied by the gas n =…

Q: A gas composed of chlorine and oxygen has a density of 2.875 g/L at 752.0 mm Hg and 11°C. What is…

A: Interpretation- To determine the molecular formula of the gas when  gas composed chlorine and oxygen…

Q: Question attached

A: The given data contains, mass of unknown compound =2.50 g volume =875 ml Pressure =685 mm Hg…

Q: What is the molar mass of a gas that has a density of 2.62 g/L at 2.50 atm and 20.0 Celsius?

A: given: density = 2.62 g/L pressure = 2.50 atm Temperature = 20oC+ 273 = 293 K molar mass of gas = ?

Q: 2.50 moles of a gas occupies a volume of 65.5 L at 67.0 kPa; what is the temperature of the gas?

A: We are given :- Moles = 2.5 Volume = 65.5 L Pressure = 67 Kpa = 0.661239 atm  Since 1Kpa = 0.009869…

Q: At 25°C and 449 mmHg, an unknown pure gas has a density of 0.676 g/L. Which of the following gases…

A:

Q: What is the molar mass of a gas that has a density of 2.62 g/L at 2.00 atm and 25.0°C?

A: The Ideal gas equation is –

Q: What is the molar mass of an unknown gas with a density of 5.35 g/L at 1.00 atm and 25.0 °C?

A: SOLUTION: Step 1: The ideal gas equation is PV =nRT. Where,

Q: A newly discovered gas has a density of 2.39 g/L at 23.0°C and 715 mm Hg. What is the molar mass of…

A:

Q: What is the molar mass of an unknown gas with a density of 4.35 g/L at 1.00 atm and 25.0 °C?

A:

Q: An unknown diatomic gas has a density of 1.427 g/L at STP. What is the identity of the gas?

A:

Q: What is the molar mass of an unknown gas with a density of 3.60 g/L at 1.00 atm and 25.0 °C?

A: Given that for the gas: Density (d) =3.60 g/L.  Pressure (P)= 1.00 atm Temperature=250C+273.15=…

Q: A gas has a volume of 0.500 L at 786 mm Hg and 57oC. What is its volume at 743 mm Hg and 27oC?

A:

Q: What is the molar mass of an unknown gas with a density of 1.90 g/L at 1.00 atm and 25.0 °C?…

A:

Q: What volume does a 15.0g sample of helium (He) gas at 25oC and 1.66 atm occupy?

A: Consider the given information is as follows; Mass of helium sample = 15.0 g Temperature = 25°C = 25…

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

A: Given :-  Mg3N2(s) + H2O(l) → MgO(s) + NH3(g)  mass of Mg3N2 = 13.6 g  Temperature = 35°C =…

Q: 7. A 2.10-L vessel contains 4.65 g of a gas at 1.00 atm and 27.0°C. (a) Calculate the density of the…

A: The values are given as follows:

Q: What is the molar mass of an unknown gas with a density of 2.05 g/L at 1.00 atm and 25.0 °C?

A: Given, the density of gas = 2.05 g/L the pressure of gas = 1.00 atm Temperature = 25.0 C∘ = 298K

Q: The density of an unknown diatomic gas is 1.27 g/L. What is the identity of the gas if the gas is at…

A: PV = nRT n = Mass/Molar mass

Q: A sample of xenon gas occupies 71.1 litres under a pressure of 1.55 x 103 torr at 25.0 °C. What…

A:

Q: How many liters of carbon tetrafluoride gas at STP does 4.582 x 1024 molecules occupy in significant…

A: Number or CF4  molecules = 4.582 × 1024  Volume occupied by 1 mole of any gas at STP = 22.4 L

Q: A 1.98-g sample of an unknown gas has a volume of 816 mL and a pressure of 712 mmHg at 52.3 °C.…

A:

Q: An analyst knows that a sample of gas is either carbon dioxide or carbon monoxide. The analyst…

A:

Q: An unknown diatomic gas has a density of 3.164 g/L at STP. What is the identity of the gas?

A: Suppose molar mass of the diatomic gas is A Number of moles of gas = Mass/Molar mass…

Q: A closed gas system initially has volume and temperature of 4360mL and 646.0C with the pressure…

A: Given;

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.