0380 g of Mg strip reacted completely with 6 M HCl in the gas buret and 35.8 mL of hydrogen gas is collected over water at 20.0 ℃. The pressure of the “wet” hydrogen gas is adjusted to the outside atmospheric pressure, a pressure of 747.50 torr. The vapor pressure of water at 20.0 ℃ is 17.54 torr.   How many mole of Magnesium were reacted? How many moles of H2 are theoretically produced? Mg(s) + 2 HCl(aq)  →  MgCl2(aq) + H2(g)   What is the pressure of “dry” hydrogen gas?   __________torr   __________atm   Using the volume of hydrogen gas collected and the universal gas law, PV = nRT, where R is the gas constant 0.08206 L•atm/mol•K, calculate the experimental number of moles of hydrogen produced.   What is the percent yield for the reaction?

Q: oxygen can be generated in the laboratory by heating potassium chlorate until it it decomposes. what…

A: The potassium chlorate is heated in laboratory to generate oxygen.   2KClO3 (s)→2KCl (s) + 3O2 (g)…

Q: What volume of oxygen at 423.0 K and a pressure of 127.4 kPa is produced by the decomposition of…

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Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

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Q: In what volume must 12.5 moles of argon be contained so that at 20.0°C it would exert a pressure of…

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Q: What is the temperature, in degrees celcius, of 1.50 moles of neon (Ne) gas confined to a volume of…

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Q: 1.An empty 2.00 L soda bottle is filled with 35.2 grams of gaseous CO2.  Calculate the temperature,…

A: Answer:- Firstly using the ideal gas equation, PV = nRT, moles of the gas and pressure, temperature…

Q: Ioi gas Occuples a volume of 9.15 L at 415 K. If the pressure remains constant, at what temperature…

A: The question is based on the concept of Charle's law.   it states that for a given amount of gas ,…

Q: For the reaction C+O2 =CO2 what volume of O2 gas at 25.0 degrees Celsius and 1.02 atm is required to…

A: Consider the given balanced equation as; C + O2 → CO2     Given information is as follows;…

Q: A sample of 250.9 mL of wet nitrogen gas was collected over water at a total pressure of 753 torr…

A: As per Raoult’s Law,Total Pressure = Partial vapour pressure of water + Partial vapour pressure of…

Q: What volume will 12.0 g of oxygen gas (O2) occupy at 25oC and a pressure of 52.7 kPa? What is the…

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Q: If 27.2 grams of potassium carbonate is reacted with 125 ml of .700 M hydrobromic acid in a 3.5 L…

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Q: A 0.3400 g piece of brass is allowed to react with hydrochloric acid at the base of eudiometer. The…

A: When brass is reacted with hydrochloric acid, only zinc reacts with hydrochloric acid.  The reaction…

Q: A sample of 257.0 mL of wet nitrogen gas was collected over water at a total pressure of 759 torr…

A:

Q: A 0.410 L sample of argon is collected at 45 oC. If the temperature of the sample is increased to 75…

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Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

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Q: Consider the reaction between aluminum and sulfuric acid to produce aluminum sulfate and hydrogen.…

A: One mole of any gas at STP(standard temperature and pressure i.e 273 K and 1 atm ) take up a volume…

Q: Ancient Romans built often out of bricks and mortar. A key ingredient in their mortar was quicklime…

A:

Q: What volume in liters of fluorine gas is needed to form 999 L of sulfur hexafluoride gas if the…

A: If temperature and pressure keeping constant then volume of gas is directly proportional to the…

Q: 2. You have a 965 mL sample of methane at 92°C and a pressure of l.29x10° torr. A. How many moles of…

A: Volume of methane = 965 mL = 0.965 L Temperature = 92 oC = 273.15 + 92 = 365.15 K Pressure = 1.29 x…

Q: A sample of gaseous arsine in a sealed 500.0 mL flask at 278.0 torr and 223 K is heated to 473 K at…

A: The no of moles of arsine before and after decomposition can be calculated from ideal gas equation.…

Q: The pressure in a flask containing 15.0 g Ar and 15.0 g Ne is measured and found to be 796 mm Hg at…

A:

Q: What volume in liters of fluorine gas is needed to form 999 L of sulfur hexafluoride gas if the…

A: The expression of ideal gas equation is shown below: PV = nRT Where; P = pressure V = volume n =…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: A sample of 222.9 mL of wet nitrogen gas was collected over water at a total pressure of 785 torr…

A:

Q: How many liters of hydrogen gas at STP were generated from 52.70 g of zinc metal?

A: Generation of hydrogen gas from 52.0 g of Zn metal.

Q: If 68.0 cm of hydrogen gas is collected over water at 45°C and 765 mm Hg, what is the volume of dry…

A: Given data contains, Pressure (P) = 765 mmHg-71.9 mmHg= 693.1mmHg=0.9119 atm Volume (V) = 68.0 cm3 =…

Q: If 68.0 cm of hydrogen gas is collected over water at 45°C and 765 mm Hg, what is the volume of dry…

A: Pressure , temperature and volume of hydrogen gas over water - Pressure (P) = 765 mmHg-71.9 mmHg=…

Q: What mass (in g) of oxygen must be added to 9.59 g of neon at 24oC, and in a 96 L contain for a…

A: Given data : Mass of neon = 9.59 g Temperature (T)= 24oC = 297 K Volume (V)= 96 L We have to…

Q: Consider the reaction: Li2O(aq) + CO2(g) Lİ2CO3(s) ----> What volume of cabon dioxide will react…

A: Given :-  Li2O(aq) + CO2(g)  ---> Li2CO3(s)   Mass of Li2O = 1.00 g  Molar mass of Li2O = 29.88…

Q: What is the pressure of 1.51 g of nitrogen gas confined to a volume of 0.105 LL at 30 ∘C?

A:

Q: 0380 of Mg strip reacted completly with 6 M HCL in the gas burret and 35.8 mL of hydrogen gas is…

A:

Q: 0.0380g of Mg Strip reacted completely with 6 M HCl in the gas buret and 35.8 mL of hydrogen gas is…

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

Q: A 334-mL cylinder for use in chemistry lectures contains 5.225 g of helium at 23 °C. How many grams…

A: Given,Mass = 5.225 gMolar mass of helium is = 4.0 g/molVolume = 0.334 LTemperature = 23 oC = 273.15…

Q: if 89.83 L of water are produced at STP? (4pts)

A: Produced volume of H2O =89.83 L 2C4H10(g) + 13O2(g) -> 8CO2(g) + 10H2O(g)

Q: 7. At what temperature will 1.45 moles of neon gas occupy 10.99 liters at 2.00 atmospheres?

A: Given, Moles of Neon gas, n = 1.45 Volume of gas, V = 10.99 L Pressure of gas, P = 2.00 atm Formula…

Q: A sample of 320.2 mL of wet nitrogen gas was collected over water at a total pressure of 755 torr…

A: Molar concentration of Sodium Nitrite = 0.0334 M  or  3.34 x 10-2 M

Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A:

Q: A sample of 263.0 mL of wet nitrogen gas was collected over water at a total pressure of 756 torr…

A: Introduction :  Molarity is defined as the number of moles of solute dissolved in one litre of the…

Q: If a sample of Argon gas occupies 2.50 L at 100.0 °C and 5.00 atm, what volume will it occupy at 0.0…

A: The volume can be calculated as follows: P1V1T1  = P2V2T25.00atm×2.50L373K  = 1.00atm×V2273KV2=9.1 L

Q: The reaction of aluminum with HCl produces hydrogen gas and AlCl3. If 35.5 mL of H2(g) is collected…

A: aluminum and hydrogen chloride undergo displacement reaction where Al being more reactive replaces H…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: Answer: When hydrogen gas is collected over HCl, solution it would also be containing water vapor in…

Q: A flask of volume 0.753 L contains a sample of chlorine gas, Cl2, with a pressure of 198 Torr at…

A: Volume = 0.753 L  Pressure = 198 torr  Temperature = 25.8 °C  Mass of sodium required to completely…

Q: A sample of 299.5 mL of wet nitrogen gas was collected over water at a total pressure of 728 torr…

A: Given: Volume of gas collected = 299.5 mL = 0.2995 L                            (Since 1 L = 1000…

Q: The alkali metals [Group 1A(1)] react with the halogens to formionic metal halides. What mass of…

A: The given data contains, Volume = 5.25 L Pressure = 0.950 atm Temperature = 293 K Gas constant…

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

A: Given , Mass of sulfur = 4.60 g Molar mass of sulfur = 32.0 g/mol Moles of sulfur = mass/molar mass…

Q: A sample of 328.1 mL of wet nitrogen gas was collected over water at a total pressure of 761 torr…

A:

Q: In an experiment, 175 mL of nitrogen gas was collected over water at 23.5 oC and 757 mmHg. What mass…

A: Given,175 mL of nitrogen gas was collected over water at 23.5oC and 757 mmHg.The vapour pressure of…

Q: What volume of H2 will be combine with the 22 L CL2 (g) to form HCl (g)? What volume of HCl (g) will…

A: Given data contains,  Volume of chlorine is 22L.

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.