Miners’ Lamps Before the development of reliable batteries, miners’ lamps burned acetylene produced by the reaction of calcium carbide with water: CaC2(s) + H2O(l) à C2H2(g) + CaO(s) A lamp uses 1.00 L of acetylene per hour at 1.00 atm pressure and 18°C. How many moles of C2H2 are used per hour? How many grams of calcium carbide are needed for a 4 hour shift?

Q: In the combustion of CH4 + 2O2 -> CO2 + 2H2O If 64 grams of methane gas is burned, then how much…

A: The stoichiometric relation in the given balanced chemical reaction is given below. moles of…

Q: Copper reacts with nitric acid according to the following equation. Cu(s)  +  4 HNO3(aq)  →…

A:

Q: Consider a reaction between magnesium metal, Mg, and hydrogen chloride (HCe) to produce aqueous…

A: Applying concept of limiting reagent and mole concept.

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: For molar masses, use 35.45 for chlorine and 1.008 for hydrogen. It will make a difference if you…

A: Ideal gas equation: PV = nRT where, P = pressure of the gas V = volume of the gas n = number of…

Q: 4) the industrial production of nitric acid via nitric oxide is called the ostwald process and is…

A: Given unbalanced reaction is :  NH3 (g) + O2 (g) ---------> NO (g) + H2O (g)  A). Balance the…

Q: many liters of chlorine gas at 1 atm and 21°C can be produced by the reaction of 5.91 moles of HCl…

A: The amount of product formed is guided by the limiting reagent.The reaction proceeds according to…

Q: What is the mass of the hypothetical compound CcO that can be formed if 1.13 x 10-3 moles of oxygen…

A: The given chemical equation is: 2Cc (s) + O2 (g) → 2CcO (s)   The atomic mass of O = 15.999 amu The…

Q: A What is the minimum mass, in kg, of sodium chloride needed to make 2.7 x 10° L of chlorine gas at…

A: Given :-  2 NaCl(s) → 2Na(s) + Cl2(g)  Volume of Cl2 = 2.7 × 105 L  To calculate :-  Mass of NaCl…

Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 253°C and 0.868 atm…

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Q: Consider the reaction. TÍCI, (1) + 0,(g) –→ TiO,(s) + 2 Cl,(g) What mass of TiCl, (189.679 g/mol)…

A: The mass of TiCl4 required to produced 12.53 L of Cl2 at STP condition is to be calculated. Given:…

Q: How many liters of hydrogen gas would be produced by the reaction of 44.6 g of Al with excess HCl at…

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Q: The following reaction yields 28.4 g of CH3OH: CO(g) + 2 H2(g) --> CH3OH The molar mass of CH3OH is…

A: The given reaction is as follows-      CO(g) + 2H2(g) ---> CH3OH yield of CH3OH = 28.4 g  We have…

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 gMolar Mass of FeS2 = 119.99 g/molVolume of O2 = 55.0 LAt temperature =…

Q: 2 H3PO4(s) --> 3 H2(g) + 2 P(s) + 4 O2(g) Using the reaction above, show step by step how many…

A: Given, 2 H3PO4(s) --> 3 H2(g) + 2 P(s) + 4 O2(g) mass of H3PO4 reacts = 0.7156 grams Volume of…

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

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Q: Hydrogen gas is generated by reacting lithium metal with excess HCI. How many grams of lithium metal…

A: The balanced reaction taking place is given as, => 2 Li (s) + 2 HCl (aq) -----> H2 (g) + 2…

Q: What volume of carbon dioxide gas (in mL) at 834 mm Hg and 25 °C can be produced when 2.3 g of…

A: Given-> Pressure (P) = 834 mm Hg =834760 atm=1.097atm Temperature (T) = 25°C = 25 + 273 = 298 K…

Q: Volume L

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Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 340.°C and 0.809 atm…

A: We need to find the limiting reactant first. Limiting reactant is the reactant that is available in…

Q: Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following…

A: Given: The total pressure (Ptotal) is 754 mm Hg The vapor pressure of water PH2O is 23.8 mm Hg The…

Q: How many liters of propyne gas, C3H4, at 1,000 mm pressure and 273 K were used in a combustion…

A: To find the number of liters of propyne gas used in the combustion reaction, we need to calculate…

Q: The equation for the preparation of Na,PO, from NaOH and H,PO, is shown below. 3NAOH(aq) + H,PO,(aq)…

A:

Q: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and…

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

Q: nitrous oxide (N₂O) before surgery, and you have to figure out if there is enough nitrous oxide in…

A: Standard temperature and pressure are 273.15 K and 1atm respectively. Divide the mass of nitrous…

Q: A compound composed of only carbon and hydrogen has a density of 5.55 g/L at 40.0 °C and 1.25 atm. v…

A: Given: Density of gas = 5.55 g/L. Temperature = 40.0 oC And pressure = 1.25 atm.

Q: Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following…

A: Zn(s)   +    2 HCl(aq)      -->   ZnCl2 (aq)    +   H2 (g)        1 mol…

Q: The skeleton chemical equation for the reaction of nitrogen gas with hydrogen gas to produce ammonia…

A: The first step is to balance the chemical equation. The balanced equation for the reaction of…

Q: Oxygen masks use canisters containing potassium superoxide. The superoxide consumes the CO2 exhaled…

A: Given data: Mass of CO2 gas = 9.6 g Formula used: Moles=Given massMolar mass

Q: Consider the following equation: 2KCIO3(s)- →2KCI(s) + 30₂(g) How many grams of potassium chlorate…

A: P = 752 mmHgR = 0.08206 Latm/molKmolar mass of KClO3 = 122.55 g/mol

Q: A) A 3.50 liter metal cylinder contains only ethane gas, C2H6. If the pressure in the container is…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A typical passenger vehicle emits about 5,634 L of carbon dioxide per year.  Octane (C8H18) is a…

A: Octane oxidized to produce the carbon dioxide and water vapour.

Q: 1. A student following the procedure described in this module collected the following data: mass…

A: According to Q & A guidelines of Bartleby, we are supposed to answer only the first 3 sub-parts…

Q: 2H3PO4(s) --> 3 H2(g) + 2 P(s) + 4 O2(g) Using the reaction above, show step by step how many liters…

A: Here we are required to find the volume of oxygen gas liberated when 0.7156 g of phosphoric acid is…

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.