Lithium hydride reacts with water as follows: LiH + H2O → LiOH + H2 How many grams of LiH are needed to fill a 4.1L life jacket at 0.97 atm and 112C with hydrogen gas? a. 1.3 g b. 31.9 g c. 46.4 g d. 0.01 g

Q: What mass of nitrogen is needed to fill an 855 L tank at STP? A. 978 g B. 870 g С. 533 g D. 1071 g O…

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Q: How many liters of hydrogen gas would be produced by the complete reaction of 2.93 g of Al at STP…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: What volume ofH,0(g) measured at STP is produced by the combustion of 6.50 g of natural gas (CH ) in…

A: Mass of CH4 = 6.50 g Molar mass of CH4 = 16 g mol-1

Q: A 92.5 mL sample of hydrogen gas is collected over water at 25 °C and 767 mm Hg. If the vapor…

A: Given data: Volume of gas collected (V1) = 92.5 mL Temperature = 25o C = 298 K Pressure of H2 gas…

Q: What volume will 0.416 g of krypton gas occupy at STP?

A: STP is the Standard Temperature and Pressure. At STP 1 mol of a gas occupies the volume of 22.4L.

Q: When a piece of Al metal is allowed to completely react with HCl (aq), 35.5 mL of hydrogen gas is…

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Q: alcium hydride (CaH 2) reacts with water to form hydrogen gas:   CaH 2 (s) + 2H 2O (l) → Ca(OH) 2…

A: Given, Volume of H2 = 48.0 liter pressure of H2= 0.888 atm temperature of H2= 32°C = 32 +273 = 305K…

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

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Q: If 7.007.00 L of water vapor at 50.2 °C50.2 °C and 0.1210.121 atm reacts with excess iron, how many…

A: The answer to the following question is given as:

Q: Automobile air bags use the decomposition of sodium azide as their source of gas for rapid…

A: Sodium azide decomposes into sodium metal and nitrogen gas. The equation for the balanced chemical…

Q: Determine the volume of SO2 (at STP) formed from the reaction of 96.7 g of FeS2 and 55.0 L of O2 (at…

A: 4FeS2 (s) + 11 O2 (9) → 2 Fe2O3(S) + 8SO2 (9)moles of Fe S2= Given weightmolecular weight…

Q: What volume will 20.0 g of argon occupy at STP

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Q: Determine the volume of SO2 (at STP) formed from the reaction of 96.7 g of FeS2 and 55.0 L of O2 (at…

A: Given, Amount of FeS2 = 96.7 g Molar Mass of FeS2 = 119.99 g/mol Volume of O2 = 55.0 L At…

Q: What volume does 2.7 grams of NH3 (g) occupt if the pressure is 740 mmHG and the temperature is 45…

A: Assuming NH3 behave as an ideal gas PV = nRT     (Ideal gas equation holds) p= pressure , v=volume ,…

Q: A person accidentally swallows a drop of liquid oxygen, O2(l), which has a density of 1.149 g/mL.…

A: To calculate the volume of oxygen gas in the stomach, first of all, we calculate the mass of the…

Q: Which of the following gases is likely to have the largest volume at STP? Link to Physical Constants…

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Q: How many grams of phosphine (PH3) can form when 35.2 g of phosphorus and 92.1 L of hydrogen gas…

A: Phosphorus reacts with hydrogen gas to form phosphine gas. The equation for the balanced chemical…

Q: The reaction between sulfamic acid and sodium nitrite produced 388mL of N2 collected over water at…

A: Volume of N2 = 388 mL = (388/1000) L = 0.388 L Temperature = 23 °C Pressure = 770.0 mmHg = (770.0 /…

Q: What volume would 2.0 moles of a gas occupy at 273K and 1.0atm? OA. 22.4L ОВ. 11.2L OC. 44.8L…

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Q: Calculate the mass of 3.45 L SO₂ at STP

A: Given data contains, STP means standard temperature and pressure. Volume=3.45 L Temperature=273 K…

Q: has a volume of 9.92 L at STP. 50. I A sample of krypton gas What would be the volume of this gas…

A: Given data,Initial volume(V1)=9.92LInitial temperature(T1)=273.15K Initial pressure(P1)=1 atmFinal…

Q: 2. What is the mass (g) of a piece of magnesium wire that produces 41.7 mL of hydrogen gas collected…

A: Detail mathematical calculation is shown below

Q: 7. How much temperature increase is necessary to generate a 1% increase in the amount of hydrogen…

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Q: stion 15 of 18 When aluminum reacts with concentrated hydrochloric acid, hydrogen gas is produced.…

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Q: A 3.76 g sample of a noble gas is stored in a 2.00 L vessel at 874 torr and 25°C. What is the noble…

A: Given data is as follows: The mass of the noble gas sample = 3.76 g The volume of the vessel = 2.00…

Q: 8. The airbag is a safety device used in cars to cushion the passenger during a crash. It involves…

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Q: If a 7.00 L container is filled with 02 to a pressure of 995 torr at 33.0°C, calculate the mass of…

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Q: A balloon containing 3.00 mole of a helium has a volume of 1.75 L. What volume would the balloon…

A: Initial moles of Helium = 3 Initial volume = 1.75 L Final moles of Helium = 3 - 0.5 = 2.5 Final…

Q: Aluminum reacts with chlorine gas to form aluminum chloride. 2Al(s)+3Cl2(g)→2AlCl3(s) What minimum…

A: Determine the number of moles of aluminum. The molar mass of aluminum is 27 g/mol. Number of moles…

Q: Calculate the weight of KCIO3 (Molar Mass = 138.5476 g/mol) that would be required to produce 29.5 L…

A:

Q: the airbag is a safety device used in cars to cushion the passenger during a crash. it involves the…

A: The reaction for the formation of N2 gas is given below: From the balanced reaction, 2 moles of…

Q: When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al(s) + 6…

A: The balanced chemical reaction of aluminium with hydrochloric acid at STP to produce aluminium…

Q: How many grams of Al were reacted with excess HCI if 2.92 L of hydrogen gas were collected at STP in…

A: According to the law pertaining to conservation of mass, same no. of elements should be present on…

Q: What is the mass (in grams) of 2.00 L of CH₄ at STP? R = 0.08314 L･bar/mol･K.

A: 1mole=6.022 * 1023particle = molar mass = 22.4L According to ideal gas equation

Q: + 6H2O C5H12 + 802 → 5CO2 How many grams of carbon dioxide can be obtained from 2.18 L oxygen gas at…

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Q: What mass of magnesium is needed to produce 80mL of hydrogen gas at STP? A) 0.868 B) 0.0868 C)…

A: Since there is no reaction given in question. Hence I'm assuming the reaction is Mg + 2 H2O…

Q: A 280ml container of chlorine gas kept at 25C and 746 torr is exposed to 1.25g white phosphorus (P4)…

A: Limiting reagent Limiting reagent is the reactant which is completely consumed during the reaction…

Q: Automobile air bags use the decomposition of sodium azide as their source of gas for rapid…

A: Volume of N2 gas is 30.0 L Temperature of the reaction is 25.0˚C Pressure of N2 gas is 758 torr. No.…

Q: Calculate the mass of 3.45 L SO2 at STP.

A: Calculate the number of moles of sulphur dioxide gas at STP. Number of moles = Volume of gas at…

Q: What is the total pressure of a mixture of 0.200 g of H2, 1.00 g of N2, and 0.820 g of Ar in a…

A: The total pressure of a mixture of non reacting gases is given by  PTotal = (n1+n2+n3)RT / V  n1 ,…

Q: When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al(s) + 6…

A: Given Chemical reaction:

Q: What volume would 2.31×10232.31×1023 molecules of an ideal gas occupy at STP?

A: According to ideal gas law PV = nRT where P = pressure = 1 atm at STP V = volume of gas n = moles of…

Q: How many grams of water form when 25.1 L of O2 gas at 23 °C and 1.70 atm completely react with H2?…

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Q: A chemist vaporized a liquid compound and determined its density If the density of the vapor at 90.0…

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Q: How many grams of hydrogen are needed to react with 5.25 liters of oxygen at STP? 1 O2(g)      +…

A:

Q: What volume does 7.43×1021 molecules of N2 occupy at STP?

A:

Q: Bromine pentafluoride is proposed to be prepared by the reaction of fluorine with bromine and is…

A: Ideal gas law  pV=nRTwherep=pressureV=volumeR=gas constantT=temperaturen=moles

Q: the airbag is a safety device used in cars to cushion the passenger during a crash. it involves the…

A: Stoichiometry of a balanced chemical gives the relationship between the amount of reactants and…

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…

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.