Earth's atmosphere is approximately 78.0% nitrogen and 21.0% oxygen. What is the mass in grams of oxygen in a cubic meter of air in a typical classroom at 1 atm and 25° C?

Q: The Oxygen Room  A room with dimensions 7.00m×8.00m×2.50m7.00m×8.00m×2.50m is to be filled with…

A: Given, Temperature = 22.0°C = 22.0+273 =295K   Pressure = 1.0 atm  Volume of oxygen is equal to the…

Q: What is the reference standard for gases?

A: In this question, we will see what is the standard reference for gases ( like reference standard…

Q: You have samples of ammonia, oxygen, carbon dioxide, argon, and nitrogen dioxide. All samples are…

A: Density  direct  proportional  to molar mass at given conditions.

Q: If 2.00 grams of helium gas and 3.82 g of oxygen gas are mixed together, what is the mole fraction…

A: Given- Mass of oxygen - 3.82 g Mass of helium - 2.00 g To find- Mole fraction of He in the solution…

Q: Calculate the volume of carbon dioxide produced (at s.t.p) from the complete combustion of 96.08g of…

A: Mass of carbon, C(s) taken = 96.08 g  Molar mass of C(s) = 12.01 g/mol

Q: The gas, carbon dioxide, is found in dry air at sea level at a concentration of 330. ppm. At a…

A: Given: concentration of CO2 = 330 ppm molecules of dry air = 2.51*1013 million molecules per cm3

Q: What volume in liters is occupied by 39.1 g of C2H2 at 445 mm Hg and 46° C?

A: Given,  The volume in liters is occupied by 39.1 g of C2H2 at 445 mm Hg and 46° C is:

Q: The mass of earth's atmosphere is 5.3x1015 metric tons. The atmospheric abundance  of helium is…

A: Given that the mass of earth's atmosphere is 5.3x1015 metric tons. The atmospheric abundance  of…

Q: What volume (in mL) of 3.20 M HNO3(aq) needs to be added to excess Na2CO3(s) tc generate 4.85 L…

A:

Q: A.) An aqueous solution of potassium acetate, KCH3COO, contains 3.47 grams of potassium acetate and…

A: The answers to the following Questions are given as:

Q: Aqueous sulfurous acid (H2SO3) was made by dissolving 0.200 L of sulfur dioxide gas at19°C and 745…

A:

Q: 0.018 0.016 0.014+ 0.012 + 0.01 0.008 0.006 0.004 0.002 + 10 20 30 40 50 60 70 80 90 Time(min) From…

A: In chemistry, chemical kinetics deals with the kinetics of the reaction and given very useful…

Q: Please answer the question. If a flexible container at standard temperature and pressure (STP)…

A:

Q: Calculate the number of moles in 15801580 mLmL of \ce{NO2}NOX2​ at STP. Show work.

A: The number of moles can be calculated by using the ideal gas equation, PV = nRT At STP,P = 1 atmT =…

Q: At 25 oC and 1 atm, what is the molecular weight of this gas?

A:

Q: The sodium bicarbonate in an antacid tablet is titrated with 21.5 mL of 0.300 M hydrochloric acid.…

A: A) Given, Molarity of HCl solution = 0.300 M = 0.300 mol/L Volume of HCl solution = 21.5 mL = 0.0215…

Q: Iron(III) chloride is used to treat drinking and waste water. It can be made by reacting iron with…

A: Ideal gas equation is used to relate the volume of ideal gas, pressure, temperature and number of…

Q: the average oxygen content of arterial blood is approximately 0.25 g of O2 per ltre. assuming a body…

A: The amount of oxygen dissolved in 1 L of blood is 0.25 g. The body temperature is 37°C.

Q: How many grams of CC are required to react with 34.3 gg of Fe2O3Fe2O3?

A: The reaction of C with Fe2O3 is as follows: Fe2O3 + 3C →2Fe + 3CO

Q: How many grams are there in 151 liters (measured at STP) of propane, C3H3?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was…

A: The balanced reaction taking place is given as, => Fe (s) + H2SO4 (aq) ------> FeSO4 (aq) + H2…

Q: A mixture of methane (CH₄) and butane (C₄H₁₀) at one atmosphere pressure and 25°C has a density of…

A: Ideal gas equation gives the relation between pressure(P) and volume(V), temperature(T) and number…

Q: _t volume of the 1.76 M H2O2

A:

Q: The average life expectancy in the United States is 78.7 years. Assuming there are 365.25 days in a…

A: Given that , average life expectancy of US is 78.7 years  And given  1 year = 365.25 days  Complete…

Q: Bottled gas for recreational vehicles contains propane, C3H8, and butane, C4H10. Which molecules…

A: Graham's law of diffusion is used to explain the relative velocity of different gases at a constant…

Q: At standard temperature and pressure (STP) conditions, what volume (in L) would be occupied by 6.17…

A: We have to predict the volume occupied by the gas.

Q: The Goodyear blimp contains 4.75 x 10^6 L of helium at 28 degree Celsius and 1.05 atm. What is the…

A: The expression for ideal gas equation is given below,                        Here, P is the…

Q: Use the ideal gas law to complete the following table for propane (C3H8) gas. Pressure Volume Temp.…

A: We have given that  Pressure of propane = P = 636mmhHg Volume of propane = V = 1.974L No. of mole of…

Q: 1 Sample of gas were foun D the To Be 135 mm Ha, 508 mmtta, ant In पिछ 57mmta 2.

A:

Q: 8. If 0.810 moles of neon gas at a particular temperature and pressure occupies a volume of 214 mL,…

A:

Q: 1) a) Sulfuric acid, the industrial chemical produced in the greatest quantity each year, is…

A: Given :  Mass of sulfur = 1850 gm  Volume of O2 gas = 6.50 x 101 ml = 6.5 x 10-2 L  Pressure of O2…

Q: Gases are sold in large cylinders at high pressure for laboratory use. If a 40.0 L cylinder of…

A: Given :-  Pressure = 735 psi  Volume = 40.0 L  Temperature = 22°C  To calculate :-  No.of O2…

Q: At 58 C, the volume of a gas is 53.2 mL.  At the same pressure, its volume is 154 mL at what…

A: Charles law: At constant pressure, the volume of a fixed mass of a gas is directly proportional to…

Q: 13. The atmosphere exerts a pressure of approximately 4.7 lb/in- at the peak of Mount Everest. What…

A: We know that,  1 lb  = 0.45359 kg 1 in  = 2.54 cm 1 cm = 1 x 10-2m Now, we have to do a conversion…

Q: 1) a) Sulfuric acid, the industrial chemical produced in the greatest quantity each year, is…

A: No of moles = Mass  Molar mass So, Moles of S = 1850 g 32 g/mol = 57.8 mol

Q: What is the density of argon (Ar) gas at 752 mm and 21 degrees Celsius

A: Given: Pressure of argon (Ar) gas, P = 752 mm Hg. Temperature of the gas, T = 21 ∘C = (21+273) K =…

Q: At what temperature does uranium hexafluoride have a density of 0.8040 g/L at 0.5073 atm?

A: The mathematical expression of an ideal gas is,                                     Here, P is…

Q: Assume that, at body temperature, a mole of carbon dioxide gas occupies 24.4 L of volume. What is…

A: Conversion of Liter  to millilitres(ml) is,

Q: In 1897 the Swedish explorer Andree tried to reach the North Pole in a balloon. The balloon was…

A: The given data contains, Volume =4800 m3V=4.8×106 LTemperature T=273 KPressure=1 atm

Q: Each part per million (ppm) concentration of CO2 in the atmosphere is the equivale global…

A: There probably is more carbon dioxide in the air now than at anytime in 3 million years A plant…

Q: If 56.0 g of N2 gas occupies 44.8 L under Standard Conditions, then what is the mass of 134.4 L of…

A: Since the moles of N2 = mass / molar mass = 56/28 = 2 Hence PV = nRT  where P = pressure  V = volume…

Q: What volume of concentrated sulfuric acid that is 18M is required to obtain 2.9 moles of the acid?

A:

Q: At room temperature, water is a liquid with a molar volume of 18 mL. At 105°C and 1atm pressure,…

A: Given- Molar volume of liquid water at room temperature =18 ml Molar volume of the water vapour at…

Q: If you mix 1.09 moles of He and 1.312 moles of Ne in a closed container, what is the resulting mole…

A: Mole fraction = (number of moles of component)/(total number of moles)

Q: A mixture of methane (CH,) and butane (C,H,,) at one atmosphere pressure and 25°C has a density of…

A:

Q: A crude oil burned in electrical generating plants contains about 1.2% sulfur by mass. When the oil…

A:

Q: The atmosphere is a highly complex gaseous mixture that sustains life on Earth. Approximately 99% of…

A: Percentage of O3 molecules in the troposphere = 2.5 x 10-6 %

Q: The gas, neon, is found in dry air at sea level at a concentration of 18.2 ppm. At a pressure of 753…

A: At a pressure of 753 mm Hg and a temperature of 11.4 °C, dry air contains about 2.60×1013 million…

Q: 1. A crude oil contains 4% asphaltene by weight. The molecular weight of asphaltene and oil are 1000…

A: Given, Crude oil has 4% asphaltene by weight.

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.