A 2.56-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give a pressure of 786 mmHg. What is the molecular weight of this substance? Molecular weight = amu

Q: A mixture of hydrogen, oxygen and nitrogen gases exerts a total pressure of 278kPa. If the partial…

A: According to Dalton's law, the total pressure exerted by mixture of gases is equal to the sum of…

Q: What is the pressure, in kPa, of a gas sample with a pressure of 1127 mmHg?

A: Given information: Pressure of gas sample = 1127 mmHg

Q: At 27 °C, 500 cc of H2, measured under a pressure 400 torr, and 1000 cc of N2, measured under a…

A:

Q: Initially given 3.6 L at 380 mmhg and 25 celsius is then transferred to a 5.0L flask at 0 celsius;…

A: Record the given data,

Q: What is the pressure, in pascals, exerted by 1299 g CO(g) when confined at -29 ∘C to a cylindrical…

A: Provided mass of CO=1299g Molar mass of CO= 28g/mol Moles of CO=(1299g)/(28g-mol-1) Moles(n) of…

Q: A 6.0-L flask contains a mixture of methane (CH4), argon, and helium at 45oC and 1.75 atm. If the…

A: Given information, A 6.0-L flask contains a mixture of methane (CH4), argon, and helium at 45oC and…

Q: A 10.0-liter flask contains 1.013 grams of oxygen and .572 grams of carbon dioxide at 18 C. What are…

A:

Q: A 0.704-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give…

A: Given information: Mass of sample = 0.704 g Pressure (p) = 786 mmHg Volume (V) = 250 mL Temperature…

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

A:

Q: Gas Z was collected over water at 21°C on a day when atmospheric pressure was 757 torr. The volume…

A: The pressure in the collection tube is due to water vapor and the gas Z. Since, the total pressure…

Q: Aerosol cans carry clear warnings against incineration because of the high pressures that can…

A: Given,  Initial temperature = T1 = 30 ∘C  Final temperature = T2 = 1285 ∘C  Initial pressure = P1 =…

Q: 1. A flask contains 155 cm of hydrogen collected at a pressure of 22.5 kPa. 3 Under what pressure…

A:

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that the…

A: Given, Mass of Li  = 16.0 g  Volume of water = 30.0 mL  Density of water = 1.00 g/mL  Pressure =…

Q: O2 is prepared by decomposing calcium chlorate (Ca(ClO3)2) and collecting 255 ml sample over water…

A: Given data -  total pressure = 798 mmHg  vapor pressure of water at 40o C = 55.3 mmHg Volume = 255…

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that…

A: The reaction is as follows; 2Lis+2H2Oaq→2LiOHaq+H2g 1 mol of H2O reacts with 1 mol of Li 18 g of H2O…

Q: Three 5-L flasks, fixed with pressure gauges and smallvalves, each contain 4 g of gas at 273 K.…

A: As you have posted multiple parts and have not specified which part you want us to solve. Hence we…

Q: If the mercury in a manometer raises 43.0 millimeters due to a change in pressure, what is the…

A: Mercury in manometer raises 43.0 millimeter So the pressure is 43.0 mmHg Recall the relation between…

Q: Automobile air bags inflate during a crash or sudden stop by the rapid generation of nitrogen gas…

A:

Q: gas mixture contains O 2 , N 2 , and Ar at partial pressures of 125, 175, and 225 mmHg,…

A: Interpretation: The partial pressure in millimeters of mercury for carbon dioxide gas when added to…

Q: What volume of oxygen gas is produced when 29.4 g of mercury(II) oxide reacts completely according…

A:

Q: What volume of gas is produced when 16.0 g of lithium reacts with 30.0 mL of water? Assume that…

A: Lithium reacts with water to produce lithium hydroxide and hydrogen gas. Reaction can be represented…

Q: A 3.30g sample of a white solid was vaporized in a 400.0 mL vessel. If the vapor has a pressure of…

A: Number of moles can be calculated as follows: n=PVRTn=1.31atm×0.4L0.0821L.atm/mol.K×428K…

Q: 11 - Calculate the density of CO2 gas at 27°C and 380 mmHg pressure.

A:

Q: A 190 mL sample of neon has its pressure changed from 75kPa to 160 kPa. What is its new volume?

A:

Q: what is the volume of O2 in mL and L?   Temperature of O2(°C) to the nearest whole degree: 24…

A: Temperature = 24°C = 297K Pressure = 732 mmHg= 0.963 atm R= gas constant = 0.0821Latm/molK Mass of…

Q: A gas occupies a volume 1.27 L and 25 Celsius is adjusted to new volume of 1.02 L at standard…

A:

Q: If the mercury in a manometer raises 37.5 millimeters due to a change in pressure, what is the…

A:

Q: We find that a mass of 0.896 g of a gaseous compound, containing only nitrogen and oxygen, occupy a…

A:

Q: What volume of oxygen gas is produced when 29.4 g of mercury(II) oxide reacts completely according…

A: The given chemical equation is: 2 HgO (s) → 2 Hg (l) + O2 (g) Given mass of HgO = 29.4 g  Molar mass…

Q: The following reaction is used to generate hydrogen gas in the laboratory. If 243 mL of gas is…

A: First determine the moles of hydrogen produced from given reaction under given conditions.…

Q: Heptane (C7H16) gas reacts with oxygen gas to give carbon dioxide gas and water vapor.  If you mix…

A: C7H16+11O2=7CO2+8H2O No excess reagent reagent is used So, now mole of heptane required=1 mole Mole…

Q: When a 222.3 mL sample of nitrogen is kept at a constant temperature of 5.0 °C, it has a pressure of…

A: Given data, Initial volume (V1) = 222.3 mL = 0.2223 L Temperature = 5oC Initial pressure (P1) =…

Q: Consider the generic reaction: 2 A(g) + B(g)》2 C(g). If a flask initially contains 1.0 atm of A and…

A: Reaction proceeds to completion implies that almost all of the reactants are converted into product.…

Q: If the Mercury in a barometer raises 22.1 centimeters due to a change in ambient pressure, what is…

A: The expression for the pressure exerted by mercury column is as follows,…

Q: Arrange the following in order of increasing pressure:   *low pressure 4.5atm 100kPa 300 mmHg…

A: Pressure : 4.5 atm  ; 100 kPa  ; 300 mmHg Arrange the pressure values in increasing orders = ?

Q: If a 0.614g sample of gas maintains a pressure of 238 mmHg when contained in a 1.0L flask at 0.0…

A: GivenMass of given gas= 0.614gVolume of the flask = 1LTemperature of the gas= 0.0° CPressure of the…

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: The hydrogen gas formed in a chemical reaction is collected over water at 30 ∘C∘C at a total…

A: Given : Temperature = 30 oC And total pressure of gas = 730 mm Hg

Q: 9. a) You have determined experimentally that at standard temperature and pressure (0 °C and 1 atm)…

A: For ideal gas the equation of state is :  PV = nRT = (W/M)RT  Or, M = WRT/PV ...(1)  Here, W =…

Q: The volume of gas in a container was originally 3.24L, while at standard pressure, 1.00atm. What…

A: Given information: V1 = 3.24 L P1 = 1.00 atm P2 = 1.20 atm

Q: • A sample of helium gas in a ballon is compressed from 4.0 L to 2.5 L at a conštant temperature. If…

A:

Q: Constants R = 0.0821atmolmolK . 1atm = 760mmHs , 1 gas = 22.41 (STP)  Hydrogen was prepared in 1776…

A: Since from the given reaction we can say that 3 moles of Fe is reacting to form 4 moles of H2  Hence…

Q: A 0.817-g sample of a colorless liquid was vaporized in an evacuated 250.-mL flask at 121°C to give…

A: Given data is as follows: The mass of the sample = 0.817 g The volume of the flask = 250 mL = 0.250…

Q: What pressure permits 25.0 cm3 of neon at 735 mmHg to expand to a volume of 40.0 cm3?

A: The initial volume of neon, V1=25.0 cm3 The initial pressure of neon, P1=735 mmHg The final volume…

Q: What volume of hydrogen gas is produced when 87.7 g of sodium reacts completely according to the…

A:

Q: If a gas sample has a volume of 178 mL and weight at 0.35g at STP, what is the chemical formula of…

A: At STP, 1 mol of an ideal gas occupies 22.7 L of volume. The gas sample has a volume of 178ml and…

Q: A student adds 3.00 g of dry ice (solid CO2) to an empty balloon. What will be the volume of the…

A: Given : Mass of dry ice i.e CO2 = 3.00 g And the condition is STP i.e standard temperature of 273 K…

Q: A sample of Oz with a pressure of 1.42 atm and a volume of 280 mL is allowed to react with excess CO…

A: We have to calculate the pressure of CO2 produced.

Q: Calculate the pressure (in mmHg) exerted by methane, CH4, measured at 300. K, that can be produced…

A: Given data: Temperature T = 300 K Volume V = 604 L Mass of sugar = 1.50 kg = 1500 g Formula used: P…

Q: The pressure 25.0 meters under water is 347 kPa. what is this pressure in mmHg?

A: Given that: Pressure = 347kPa We know that: 1atm = 760mmhg

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.