A 0.3177  g sample of a compound of carbon, nitrogen and hydrogen is burned completely and  326 mL of CO2 is formed at 672 torr and 27° C.   In another experiment, a 297.0 mg sample of the compound was found to contain 154 mg of nitrogen.  In a final experiment a gaseous sample had a density of 5.52 g/L at 25 oC and 760 mmHg.   Find the molecular formula of the compound.

Q: Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium…

A: Magnesium burns in air to produce magnesium oxide MgO. and magnesium nitride reacts with water to…

Q: What is the density of a sample of argon gas at 55°C and 765mmHg?a) 2.99 g/L b) 1.13 * 103g/Lc) 1.49…

A: The given problem can be solved by using the formula as:  dRT=PM…

Q: What is the density of a sample of argon gas at 55 °C and 765 mmHg?a) 2.99 g/Lb) 1.13 * 103 g/Lc)…

A: Relation between molar mass and density- Ideal gas equation is, PV= nRT Where, P=pressure, V=Volume,…

Q: A gas at 569 mmHg and 44.0°C occupies a volume of 6.18 L. Calculate its volume at STP.

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: How many moles of gaseous arsine (AsH3) occupy 0.0400 L at STP? What is the density of gaseous…

A: STP: STP stands for standard temperature and pressure which is used to calculate properties of gases…

Q: Hydrogen gas can be produced in the laboratory through the reaction of magnesium metal with…

A:

Q: If you pack a bag of potato chips for a snack on a plane ride, the bag appears to have infl ated…

A:

Q: A sample of hydrogen has a volume of 1.40 L at STP. What pressure would the sample have if the…

A:

Q: Enter your answer in the provided box. When coal is burned, the sulfur present in coal is converted…

A: Molar mass of S = 32 g/mol Moles of S = mass / molar mass = 2950g/(32g/mol) = 92.1875 mol The molar…

Q: Consider the following unbalanced equation: C2H5OH(g) + O2(g) → CO2(g) + H2O(l) 1.55 g of ethanol…

A:

Q: The density of a sample of gas is 1.00 g/L at 745 mmHg and 109°C. What is the molar mass of the gas

A: The ratio of mass per volume of a given substance is called its density. The equation of state of a…

Q: (a) What is the total volume (in L) of gaseous products, measured at 3508C and 735 torr, when an…

A: a) Temperture (T)= 350°C=350+273=623K Pressure P =735 Torr=735760=0.967atm. mass of C8H18=100g…

Q: If an experimental reaction, 32.5 mL were collected of hydrogen gas at 32.5 degrees Celsius and…

A:

Q: A 6.35 L sample of CO is collected at 55 °C and 1.37 atm. What volume will the gas occupy at STP…

A: Given,

Q: When 60.0 g butane (C4H10) reacts with oxygen to form carbon dioxide and water vapor. What volume of…

A: Step1: In the given reaction, the balanced equation is given as: Here, 2 moles of butane produces…

Q: Calculate the weight of KClO3 that would be required to produce 49.52 liters of oxygen measured at…

A: Given reaction:-     2KClO3S →         2KClS+3O2g     For  O2⇒V=49.52 L…

Q: The hydrogen gas from the reaction of 2.200 g of iron with an excess of acid is collected in a 10.00…

A: Number of Mole- Ratio of given mass of substance to the molar mass of substance is called number of…

Q: b) The absolute temperature of a gas at which 6.79 X 10 ² moles occupies 164 mL at 893 torr. c) The…

A: Solution:      Idea gas equation shows a combined empirical relationship of volume,…

Q: A sample of a certain gas has a volume of 452 mL at 711 mm Hg and 26 °C. What would be the volume of…

A: Given: Volume V1= 452 mL Pressure P1 = 711mmHg= 711/760= 0.935 atm Temperature T1 = 26oC= 26+ 273 =…

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: The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that…

A: Given that ,  Density of air at STP = 1.285 g/L At STP , Temperature (T) = 273.15 K Pressure (P) = 1…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: To solve this problem we will use Stoichiometry of balanced chemical equation .  First we will find…

Q: Carbon monoxide burns in oxygen to form carbon dioxide.  Provide a balanced chemical equation. What…

A: Interpretation- To write the balanced chemical equation when carbon monoxide burns in oxygen to form…

Q: 73. CH3OH can be synthesized by the reaction: CH3OH(g) CO(g) + 2 H2(g) What volume of H2 gas (in L),…

A: This question can be solved using the law of multiple proportions and ideal gas law. Here we are…

Q: A sample of oxygen gas was collected over water at a barometric pressure of 757.2 mm Hg and a…

A:

Q: 76. Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of…

A: The synthesis of sulfur trioxide is a two-step process. The given reactions show the formation of…

Q: Heating a 6.589 g sample of an ore containing a metal sulfide, in the presence of excess oxygen,…

A:

Q: In a combustion reaction, what mass of oxygen gas is needed to react with 25.0 mL of C4H10 gas,…

A: Given :-  Volume of C4H10 gas at STP = 25.0 mL  To calculate :-  Mass of O2 (in grams)

Q: Roasting galena [lead(II) sulfide] is an early step in the in-dustrial isolation of lead. How many…

A: The given data contains, mass of PbS=3750 gmolar mass of PbS=239.3 g/moln (PbS)=15.673 molpressure…

Q: A 20.0 g sample of mercury(II) oxide (HgO, molar mass = 216.6 g/mol) is heated strongly, causing it…

A:

Q: Consider the reaction:2 SO2( g) + O2( g)-------> 2 SO3( g)a. If 285.5 mL of SO2 reacts with 158.9…

A: Consider the given balanced reaction as follows: 2 SO2 g + O2 g → 2 SO3 g Given information is as…

Q: A piece of dry ice (solid carbon dioxide) with a mass of 28.8 g sublime (converts from solid to gas)…

A: According to ideal gas equation,  PV = nRT V = (nRT/P) n = moles = (given mass / molecular mass)

Q: In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg and 21.6oC, it is…

A: Given information:Volume = 12.8 LPartial pressure of chlorine = 143 mmHgPressure = 605.6…

Q: What is the mass of 12.0L of Chlorine gas (Cl2, 70.9 g/mol) measured at 1250mmHg and 157C? a) 2.94…

A: We have 12 L of Cl2 gas measured at pressure of 1250 mmHg and 157°C. We have to calculate the mass…

Q: Larry performed a reaction which produced 35 mL of hydrogen gas at 630mmHg and 21ᵒC. How many moles…

A:

Q: What is the mass of a piece of magnesium wire that produces 48.7 mL of hydrogen gas collected over…

A: Reaction:  Mg(s) + 2H+(aq) ---> 2Mg (aq) + H2 (g) 1 mol of H2 gas is produced by 1 mol of Mg…

Q: If 500, mL of hydrogen gas has a pressure of 456 torr at 23 C, what would be the volume at STP? OA.…

A: The ideal gas equation is given by,                                                        Where,…

Q: Calculate the number of moles of carbon dioxide gas present in a 1.50 L flask at STP.   A sample…

A: We need to know some basic factsVolume of 1 mole of an ideal gas at STP is 22.4 LIf number of moles…

Q: 2. A sample of gas at 245°C and a pressure of 2.5 atm occupies a volume of 12.3 L. What volume would…

A: Answer :-  2. 16.2 L  At STP the gas occupy = 16.2 L volume…

Q: O2 is prepared by decomposing calcium chlorate (Ca(CIO3)2) and collecting 255 ml sample over water…

A: The balanced chemical equation that depicts the decomposition of calcium chlorate can be written as:…

Q: A sample of nitrogen has a volume of 4.12 L at 1,591 mmHg and 193 Celsius. What volume will it…

A:

Q: A gas at 721 mmHg and 38°C occupies a volume of 3.94 L. Calculate its volume at STP.

A: STP stands for standard temperature and pressure. The standard temperature and pressure values are:…

Q: At 500°C, and in the presence of a catalyst, steam (water vapour) reacts with carbon to give a…

A: Given: Steam reacts with carbon to give hydrogen and carbon monoxide. Initial temperature = 500 oC =…

Q: CH3OH can be synthesized by the following reaction. CO(g)+2H2(g)→CH3OH(g) What volume of H2 gas (in…

A: Given, Methanol is 23.0 gT = 273 + 90 = 363 K.Pressure = 758 mmHgMolar mass of methanol is = 32 g/…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)  According to the above reaction 1 mole of Nitrogen will react with 3…

Q: In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg and 21.6°C, it is…

A: We have given that  In a mixture of helium and chlorine, occupying a volume of 12.8 L at 605.6 mmHg…

Q: Gaseous iodine pentafluoride, IF, can be prepared by the reaction of solid iodine and gaseous…

A:

Q: Ammonium nitrate decomposes explosively upon heating according to the balanced equation:2 NH4NO3(s)…

A:

Q: Calcium hydride reacts with water to produce hydrogen gas according to the following reaction:…

A: Total pressure = 2 atm Temperature = 25 degree Celsius = 298 K Volume = 1000 L No of mole 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.