Hemoglobin is the protein that transports O₂ through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules of O₂ . If 1.00 g of hemoglobin combines with 1.53 mL of O₂ at 37C and 743 torr, what is the molar mass of hemoglobin?

Q: Calculate the absolute temperature of the gas at which 3.33x10 mol occupies 478 mL at 755 torr.…

A: Use the ideal gas equation for calculating the temperature.

Q: (a) What is the total volume of gaseous products,measuredat 350C and 735 torr, when an automobile…

A: (A) The component of gasoline, i.e. the octane (C8H18) when burnt in presence of oxygen, it gives…

Q: One compound under investigation for use as a lightweight rocket fuel is dimethylhydrazine (60.10…

A: Given reaction is  (CH3)2N2H4(l) + N2O4(l) -----> 3N2(g) + 4H2O(l) + 2CO2(g)  Mass of (CH3)2N2H4…

Q: If a sample of gas occupies 6.72 L at STP, what volume will it occupy at 25°C and 800 torr?

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Q: A cylinder contains a mixture of 2735 grams of carbon dioxide and oxygen, if the volume of the…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: The problem based on stoichiometry and ideal gas equation.

Q: A gaseous sample occupies 32.4 mL at −23°C and0.75 atm. What volume will it occupy at STP?

A: The combined gas law describes the correlation among a fixed amount of gas's volume, pressure and…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: According to ideal gas equation PV =nRT where P = pressure V= volume n = number of moles R = gas…

Q: A sample of propane gas, C3H8, was collected over water at 22.5 ºC and 880. torr. The volume of the…

A:

Q: Pantothenic acid is a vitamin. Using the Dumas method, you find that a sample weighing 61.6 mg gives…

A: Given information,       A sample weighing 61.6 mg gives 3.30 mL of nitrogen gas at 23°C and 785…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given Temperature = 25 oC = (273+25)K = 298 K Pressure = 705 torr = 705/760 = 0.927 atm Volume = 285…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

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Q: 50.0 g

A: Moles of propane = ( mass / molar mass )  Moles of propane = ( 50.0g / 44.1gmol-1 )  Moles of…

Q: A chemist weighed out 5.14 gm of a mixture containing unknown amounts of BaO (s) and CaO(s) and…

A: Given values are the following. Pinitial of CO2=750 torr=750760 atm=0.987 atmPfinal of CO2=230…

Q: Small quantities of hydrogen gas can be prepared by the addition of hydrochloric acid to zinc.  A…

A: Total pressure = Pressure of H2 gas + pressure of H2O vapor Therefore, Pressure of H2 gas = Total…

Q: Cyclopropane, a gas that when mixed with oxygen is used as a general anesthetic, is composed of…

A: The given mass percent is converted into gram. Next determine the number of moles of each element.…

Q: molar mass

A:

Q: A 1.25 gram sample of an oxide of nitrogen, believed to be either NO or N2O, occupies a volume of…

A: We are given sample size=1.25 gm Volume=1.05 L Temperature=25°C=298K Pressure=735 torr=735 mm Hg

Q: At 741 torr and 44 oC, 7.10 g of a gas occupies a volume of 5.40 L. What is the molar mass of the…

A: We have given that  Pressure = P = 741 torr = 741×1760atm = 0.975 atm   Temperature = T = 44 +…

Q: Methane, CH4, is being considered for use as an alternative automotive fuel to replace gasoline. One…

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

Q: Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal…

A:

Q: A 2.135g sample of a gaseous chlorofluorocarbon occupies a volume of 315.5 mL at 739.2 torr and…

A:

Q: Calculate the density of a gaseous sample of O2 in grams/liter at 105.3Co and 650 torr.

A: According to ideal gas law PV = nRT where P = pressure in atm = P in torr / 760 V = volume in L n =…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: What is the volume of a gas in mL at STP if the gas changed conditions to  341 mL at 25.0 oC at 653…

A: According to ideal gas law, PV = nRT where P = pressure  V = volume n = moles of gas  R = gas…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: What volume will 150 ml of gas at 23 Celsius and 710 torr occupy at STP?

A:

Q: A sample of gas has a mass of 3.85 g and has a volume of 955.0 mL at 831 torr and 23.0°C. What is…

A: Solution:- Given => mass of gas = 3.85 g                                  volume of gas = 955.0…

Q: How many liters will 14 grams of O2 occupy at 710 torr and 15 Celsius?

A:

Q: 7. The volume of a gas-filled balloon is 50.0 L at 20.0∘C and 742 torr. What volume will it occupy…

A:

Q: Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters.…

A: (a) The grams of Cl2 are in the sample is,The ideal gas equation is,

Q: A student wished to generate hydrogen according to the following:   Zn(s)  +  2HCl(l)  à  H2(g) +…

A:

Q: Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid…

A: Given that,Mass of sodium azide = 125gPressure = 756 torrTemperature = 27ºC

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Pressure = 765 Torr Volume = 405 mL = 0.405 L Temperature = 25°C = 298 K  Mass of MnO2 required =?

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given,Volume of chlorine to be obtained = 215mLTemperature = 250C.Pressure = 765 torr.

Q: 2.50 L H2 1.00 L N2 415 torr 0.210 atm What are the final partial pressures of H2 and N2 after the…

A:

Q: Consider the reaction: 2Na (s) + Cl2 (g)  2NaCl (s) Calculate volume of chlorine gas measured at…

A:

Q: A sample of propane gas, C3H8, was collected over water at 22.5 ºC and 650. torr. The volume of the…

A:

Q: A student wished to generate hydrogen according to the following:Zn(s) + 2HCl(l)  H2(g) +…

A: Reaction: Zn(s) + 2HCl(l) → H2(g) + ZnCl2(aq) In general, 1 mole of Zn reacts with 2 moles of HCl to…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A:

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: In this question, we want to determine the mass of MnO2(s) means how much it is.  How to calculate…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: The ideal gas equation shows the relation between pressure, volume, temperature and no of moles of…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: In the given reaction the number of Cl2 gas can be obtained using ideal gas law equation: Where, P…

Q: Under conditions in which the density of carbon dioxide is 1.96 g/L and that of nitrogen is 1.25…

A: The given data: The density of the Carbon dioxide = 1.96 g/L. The density of the nitrogen = 1.25…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Mole Concept problem and Question is solved as per question need

Q: A typical adult inhales 430 mL of air in any one breath. How many air particles are in a typical…

A:

Q: Calculate the volume of a sample of carbon monoxide at -11°C and 356 torr if it occupies 3.65 L at…

A: The volume of sample is calculated using ideal gas equation.

Q: A sample of propane gas, C3H8, was collected over water at 22.5 ºC and 630. torr. The volume of the…

A: From given Temperature = 22.5℃ =(22.5+273)K = 295.5K  Total pressure = 630 torr Total pressure =…

Q: chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given:Volume = 145 mL = 0.145 L.Temperature = 25 oC = 298 KPressure = 735 torr = 0.9671 atm.

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.