Chemist carried out a chemical reaction that produced a gas. It was found that the gas contained 80% carbon and 20% hydrogen. It was also noticed that 1500 mL of the gas at STP had a mass of 2.01 g. a. What is the empirical formula of the compound? b. What is the molecular formula of the compound?

Q: A sample of carbon dioxide is contained in a 500.0500.0 mL flask at 0.9760.976 atm and 15.615.6 ∘∘C.…

A: Given, Volume of the flask = 500.0 ml = 0.5 L pressure = 0.976 atm Temperature = 15.6 C° = (15.6 +…

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) 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: A sample of fluorine gas occupies 810 mL at 205 K and 90.O kPa. What volume would the gas occupy at…

A: Gas law PV=nRT PV/T=nR (nR=constant) (P1 V1)/T1=(P2 V2)/T2 Option (4) is correct.

Q: At STP a sample of gas with a mass of 29.9 grams occupies 3.80 L. What is the molar mass of this…

A: 1 mole = 6.022×1023 [Avogadro's number ] The mass of one mole of molecules of a gas is called molar…

Q: a 5.16 L quality of a gas measured at STP has a mass of 37.3 g. what is the molar mass of the…

A: Given Volume of gas = 5.16 L Given Mass of gas = 37.3 g

Q: 5. What is the pressure that must be exerted on 300 mL of a gas which has been collected at STP So…

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: The density of a gas at STP is found to be 2.8 g/L. What is the formula of the gas?

A: Concept:  As we know that density is defined by ratio of mass to the valume. Density = molar mass/…

Q: what volume of carbon dioxide (in L) will be produced from the complete combustion of 158.3 g of…

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: 8.00 gram mixture of copper (II) sulfide and iron (II) sulfide reacted with excess nitric acid and…

A: Given the mass of mixture = 8.00 g composition of mixture is copper (II) sulfide, CuS(s) and iron…

Q: A 24.0 L cylinder contains nitrogen gas at 95.6 °C and 591 torr. How many moles of nitrogen are in…

A: To solve this question, first convert pressure in atm and temperature in K. Then use ideal gas law…

Q: 3. A chemist carried out a chemical reaction that produced a gas. It was found that the gas…

A: PV = nRTP=1 atm V= 1500ml =1.5 litre n=Weight Gram molecular weight R =0.0821T = 273 K Gram…

Q: A compound is found to contain 12.8% C, 2.12% H, and 85.1% Br, If one liter of the gas(measured at…

A: 1 L of the gas has a mass of 8.38 g, so 22.4 L would have a mass of 188 g (3 significant figures).…

Q: A gaseous hydrogen- and carbon-containing compound is decomposed and found to contain 82.66% carbon…

A:

Q: Use the molar volume of a gas at STP to determine the volume (in L) occupied by 42.1 g of neon at…

A: The number of moles of Neon can be calculated asThe atomic mass of Neon = 20 g/mole

Q: A 2.50 g sample of an unknown gas occupies 875 mL at 685 mm Hg and 35 degrees Celcius. What is the…

A: Given: mass of gas = 2.50 g Volume of gas = 875 mL = 0.875 L pressure of gas = 685 mmHg = 0.9013 atm…

Q: A 0.271 g sample of He(g) is placed in a balloon at 22.0 °C and a pressure of 754 mm Hg. What is the…

A: This question is based on ideal gas Equation. PV = nRT Where, P - pressure V- Volume n = no of moles…

Q: How many moles of gas are present when you collect 35.83 mL of the gas over water at 25.3°C and 0.97…

A:

Q: Consider a sample of argon gas at 20.0ºC, 2167 mm Hg, and 1,450 mL. How many moles of argon are in…

A: Given, Pressure of argon gas (P) = 2167 mmHg = 2.85 atm Volume of argon gas (V) = 1,450 mL = 1.45 L…

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

A: Given: The mass % of carbon=64.81% The mass % of hydrogen=13.60% The mass % of oxygen=21.59% The…

Q: In the lab, students generated and collected hydrogen gas according to the following equation:…

A: A) The reaction of Zn with H2SO4 is  Zn + H2SO4 --------> Zn2SO4 + H2  Hence we can see that 1…

Q: The density of a gas is found to be 1.45 g/L at 27 degrees C and 0.900 atm. What is the molar mass…

A: The ideal gas law, that related different parameters of a gas is given as:

Q: 9. A gas exerts a pressure of 0.975 atm when at 20.0°C and in a 1.75 L vessel. A. How many moles of…

A: Welcome to bartleby ! As per company rules we can't answer more than one question .So, I have…

Q: A 0.593g sample of gas has a volume of 115 mL at 53.2 ∘C and 94.0 kPa. What is the molar mass of…

A: Use ideal gas equation:

Q: flask with a volume of 3.16 L contains 2.02 grams of an unknown gas at 32.0°C and 1.00 atm.   What…

A: Given :  Volume of gas = 3.16 L  Pressure = 1.00 atm  Temperature = 32°C = 305 K  Mass = 2.02 gm  R…

Q: Consider the reaction involving only the elements chlorine and fluorine: Cl2(g) + 3F2(g) 2CIF3(g)…

A:

Q: 20. A gas mixture is made by placing 6.00 grams each of Ne and Ar in a 10.0 L rigid container at…

A: (a) The partial pressure of Ne Molar mass of Ne = 20.2 g/mol mass given of Ne= 6.00 g number of mol…

Q: What volume of ammonia measured at 35 C and 765 torr, will be produced from 2.70g of hydrogen?…

A:

Q: If a gaseous mixture is made by combining 1.89 g  Ar and 3.92 g Kr in an evacuated 2.50 L container…

A:

Q: An unknown gas has a density of 1.71 g/L at 755 mm Hg, 25°C. How many moles of unknown gas are…

A:

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: A particular gaseous hydrocarbon has a density of 2.33g/L at 23oC and 746mmHg.  Calculate the molar…

A: Introduction:- the molar mass of the gas can be find by using ideal gas equation which is as- P×V…

Q: How many grams of Zn can produce 33.6 Lof H2 gas at STP?

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

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: A sample of O, gas occupies 308 mL at 46°C and 1.27 atm. What is the volume of this 0, gas sample at…

A:

Q: An unknown gas has a molar mass of 24.0 g/mol. What is the density of this gas at STP in g/L?

A:

Q: The density of a gas is found to be 1.45 g/L at 27° C and 0.900 atm. What is the molar mass of the…

A: The molar mass of the gas can be find using the formula.

Q: At STP, 0.304 L of a gas weighs 0.670 g. Calculate the molar mass of the gas. |g/mol

A: The mole term is a convenient way of expressing a substance's quantity. To calculate the number of…

Q: 1. A compound has an empirical formula of CH2 O and a molecular mass of 60 amu. What is the…

A: Two questions one regarding molecular formula and second regarding volume of a gas at STP are to be…

Q: A gas sample with a mass of 11.2 g exerts a pressure of 1.05 atm at 22.0ºC and a volume of 2.79 L.…

A:

Q: A 15.0g sample of gas occupies 23.2 L at STP. What is the molecular weight of this gas?

A:

Q: At 24 °C and 745 mmHg, the density of an unknown gas is determined to be 7.76 g/L. What is the molar…

A:

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

A:

Q: An unknown gas has a density of .355g/L at 17 celsius and 189mm Hg. Calculate the molar mass of the…

A: Since density = mass / volume  Hence mass of gas = density X volume = 0.355 V hence moles of gas =…

Q: a.) given 1 mol of gas in 1 L container at 0.00oC what is the pressure? b.) given 1 mol of gas at…

A: Answer a. This problem cab be solve by using the equation   PV=nRT Where P= Pressure,V=volume…

Q: (a) Calculate the density of sulfur hexafluoride gas at 707 torrand 21 °C. (b) Calculate the molar…

A:

Q: A sample of gas 935.5 mmHg and occupying a volume of 12.16 L is transferred to a smaller container…

A: Given : P1 = 935.5 mm Hg V1 = 12.16 L V2 = 6.36 L To find : P2 ( New pressure on transferring to…

Q: Ammonia​​ can ​​be ​​produced​​ by ​​heating ​​ammonium ​​chloride ​​with​​calcium hydroxide. ​​I…

A: The reaction taking place will be  2 NH4Cl + Ca(OH)2 -----> CaCl2 + 2 NH3 + 2 H2O  Hence moles of…

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.