how many liters of H2(g) are produced at 745 mm Hg at 298.15K from the complete reaction of 12.5g aluminum according to the reaction below? 2 Al (s) + 6 HCl (aq) -> AlCl3 (aq) + 3 H2 (g)   a. 28.0 L b. 56.0 L c. 17.3 L d. 112. L e. none of these

Q: A hydrogen gas sample is collected over water. The volume of the sample was 190.0 mL at 26 degrees…

A: Temperature of the sample = 26oC= 299.15 KVolume of the sample = 190.0 mL= 0.190 L…

Q: If 72.6 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298.15 K) and…

A: The reaction taking place is given as, => H2CO3 (aq) ----> H2O (l) + CO2 (g) Given : Volume of…

Q: 4. Two tanks are connected by a closed valve. Each TANK A tank is filled with gas as shown in the…

A:

Q: A student performs an experiment like the one you saw in Experiment 8.  The student determines the…

A: Given,  Pressure of oxygen is 0.7811 atm Volume of oxygen is 217 ml = 0.217 L Temperature = 298.15 K…

Q: An air mass with a volume of 650 mL starts at sea level, where the pressure is 775 mm Hg.  It rises…

A: Given: Volume at sea level, V1=650 mL The pressure at sea level, P1=775 mm Hg The pressure at top of…

Q: 3) How many mm Hg are in 0.890 atm of pressure? A) 1.17 x 10-3 mm Hg B) 676 mm Hg C) 854 mm Hg 4)…

A: Option B is correct.

Q: 23. How many moles of gas are present in a 7.0 L balloon at 250 K and a pressure of 1.2 atm? L xatm…

A: [23.]  n = ?  V = 7.0 L  T = 250 K  P = 1.2 atm  R = 0.0821 L.atm/mol.K  By Ideal gas eqn ; PV = nRT…

Q: A 2.35 gram sample of an unknown gas is found to occupy a volume of 1.66 L at a pressure of 650 mm…

A: According to ideal gas equation, PV=nRTP=PressureV=volume n=number of molesR=gas…

Q: 1. At what temperature does sulfur hexafluoride have a density of 0.5550 g/L at 0.8210 atm? 2. A…

A: Dalton's Law of Partial Pressure states that the total pressure exerted by a mixture of two or more…

Q: If 5.00 g of Gas A and 5.00 g of Gas B are mixed in the same container, and the partial pressure of…

A:

Q: unknown. a. Gas Law: Charles Solve for the Unknown: 295 425 (22+273)K 5.34atm. Gas Law: Boyle's Law…

A:

Q: is reacted with an excess of H2SO4, what volume of gaseous HF will be produced at a temperature of…

A: CaF2(s) + H2SO4(aq)---->2HF(g) + CaSO4(s) Molar mass of CaF2 =   78 g/mol  P = 780 mmHg = 1.026…

Q: When chromium metal is added to nitric acid, the following reaction takes place Cr (s) + 6 HNO3 (aq)…

A: Provided temperature=40°C Or, provided temperature=(273.15+ 40)Kelvin Provided temperature…

Q: What mass of helium gas exerts a pressure of 965 mmHg in a volume of 5.40 L at a temperature of…

A: m = ?  M = 4 g/mol P = 965 mmHg = 1.269 atm V = 5.40 L  T = 27°C = 300 K  R = 0.0821 L.atm/mol.K

Q: Find the volume of a gas at 760.0 mm Hg pressure and 273 K when 2.00 liters are collected at 745.0…

A: Given: Initial pressure (P1) = 745 mm Hg initial temperature (T1) = 25 °C Initial volume (V1) = 2…

Q: 68. How many moles of gas must be forced into a 4.8-L fire to give it a gauge pressure of 32.4 psi…

A:

Q: The gas sample has a volume of 71.0 μL at 25.0 °C. What is the volume of the gas after the sample is…

A: At constant pressure P1 = P2 According to Charles Law,

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Given,          Vapor pressure of water = 23.8 mmHg          Total vapor pressure = 911 mmHg…

Q: How many grams of nitrogen gas (N2) are in a balloon with a volume of 35.7 L at STP? (1 mole of gas…

A:

Q: The amount of gas that occupies 26.4 L at 43.0 °C and 276 mm Hg is ___ mol. R= 0.0821 Lxatm/molxK.…

A: Ideal gases follows expression containing variables such as P, V, T , n and it is generally…

Q: f 81.4 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298.15 K) and…

A: Mass of carbonic acid = 81.4 g Temperature (T) = 298.15 K Volume (V)= 2.00L Gas constant (R) = 0.082…

Q: How many molecules of O2 occupy a volume of 1.0 L at 65 C and 778 mm of Hg?  a) 0.037 molecules…

A: According to the ideal gas law, PV = nRT where P = pressure in atm = P in mm Hg / 760 = 778 /760 =…

Q: 2.20 g of C4H9Br was reacted with excess NaOH to make C4H8(g).  The volume of the gas produced was…

A: In this question, we have given the reaction of C4H9Br with excess NaOH to make C4H8(g).  We have to…

Q: Using the Ideal Gas Law to Calculate Molar Mass A 1.22-g sample of an unknown gas has a volume of…

A:

Q: the number of grams of H2

A:

Q: 17. Is 27.00 grams of nitrogen gas that occupies 22.0 L at 1.0°C at standard pressure? 18. A sample…

A: This is ideal gas calculation

Q: Consider a 25.0 L gas in a container initially at 25oC and 1 atm. If this gas is heated to 80oC.…

A: Given: Initial pressure = 1 atm Initial volume = 25.0 L Initial temperature = 25 oC Final…

Q: If 53.6 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298.15 K) and…

A:

Q: A flexible container at an initial volume of 4.11 L contains 9.51 mol of gas. More gas is then added…

A:

Q: 10.00g of O2 and 15.00g N2 are combined in a 20.0L container at 25.00oC O2 32.00g/mol N2 28.02…

A: We have givenMass of O2 = 10  gMolar Mass of O2 = 32 g/moleNo of moles of O2  = Mass of O2Molar mass…

Q: In a 1.000 L sealed container at STP you decompose 100 g sodium Bicarbonate if you ignore the volume…

A: Answer: 13.33 atm

Q: A mixture containing 1.58 g CO (g) and some CO2 (g) occupies a 7.24-L vessel at 42°C. The pressure…

A:

Q: What mass of O2 is required to produce 5.00 L NO2 at 305 K and 752 mm Hg? (R = 0.08206 L×atm/mol×K)…

A: Use ideal gas equation to get the number of moles of NO2 gas that is formed. Ideal gas equation is:…

Q: a. A gas at 25.0C with an initial pressure of 0.500atm and volume of 200.0mL is heated to 35.0C with…

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

Q: The partial pressures of CH4, N2, and O2 in a sample of gas were found to be 127 mmHg, 464 mmHg, and…

A: Since mole fraction can be written in terms of partial pressures as  mole fraction of component =…

Q: ole of methane gas is contained in a closed-end monometer at 2.0 atm pressure and 273 °C. The…

A: Given: The temperature (T) = 273 K. The pressure, (P) = 2.0 atm The moles of gas, (n) = 0.5 moles,…

Q: A 200-L helium gas at a temperature of 280C and a pressure of 2.00 atm was transferred to a tank…

A: Hi, since you have posted multiple questions we will answer the first question. Kindly repost the…

Q: At 570 mm Hg and 25.0 celcius a gas sample has a volume of 2270 ML. What is the final pressure  (in…

A:

Q: A chemical reaction is shown: 2NO(g) + O₂(g) → 2NO₂(g). How many liters of pure oxygen gas, measured…

A:

Q: 18) What mass of nitrogen is needed to fill an 855 L tank at STP? A) 1.07 kg B) 0.533 kg C) 0.978 kg…

A: Known: Molar mass of nitrogen = 28 g/mol Molar mass of oxygen = 32 g/mol

Q: A mixture of 4.0 g H:(g) and 10.0 g He(g) in a 4.3L flask is maintained at 0 °C. What is the partial…

A:

Q: 6. How many grams of carbon dioxide are contained in 550 mL of this gas at STP? A) 0.0245 g B)…

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Q: A bubble of helium gas has a volume of 0.650 mL near the bottom of a large aquarium where the…

A:

Q: 1. A sample of gas occupies 2.00L with 5.00mol present. What would the volume be if the number of…

A: Given :-  Initial volume = 2.00 L  Initial number of moles = 5.00 mol  Final number of moles = 10…

Q: A flexible container at an initial volume of 4.11 L4.11 L contains 9.51 mol9.51 mol of gas. More gas…

A: 1. According to Avogadro's concept, "Volume of gas is directly proportional to the moles of that…

Q: If an unknown gas has a mass of 1.95 g and occupies a volume of 800ml at 730 mm Hg  and 20 °C what…

A: Given mass of the gas (m) = 1.95 g Volume of the gas (V) = 800 ml = 0.80 L   Pressure exerted by the…

Q: A sample of oxygen is collected over water at 19°C and 754 mm Hg in a 125-mL flask. The vapor…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: At STP, how many moles are in these volumes of gasses? (a) 67.2 L SO2 (b) 0.880L He (c) 1.00x10° L…

A: At STP one mole of any gas occupies 22.4 L volume  1 mol=22.4 L volume

Q: 1. a) A gas evolved during the fermentation of glucose (wine making) has a volume of 0.780 L at…

A:

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.