Magnesium can be used as a “getter” in evacuated enclosuresto react with the last traces of oxygen. (The magnesium isusually heated by passing an electric current through a wireor ribbon of the metal.) If an enclosure of 0.452 L has a partialpressure of O2 of 3.5 x 10-6 torr at 27 °C, what mass of magnesiumwill react according to the following equation?2 Mg(s) + O2(g)------>2 MgO(s)

Q: Methanol (CH3OH; 32.05 g/mol) can be made by the following balanced reaction: CO(g) + 2H2(g) →…

A: Let's assume H2 gas behaves ideally. So, according to the ideal gas law, we can write: PV=nRT…

Q: Consider the following reaction:                           4 Al(s) + 3 O2(g)  → 2 Al2O3(s)…

A: Given, 2.00 L of pure oxygen at STP (0°C, 1 atm) to react completely with a certain sample of…

Q: Which of the following statements are true? Which are false? Why is each true or false? (c) A…

A: A substance has three basic physical property- volume, pressure and temperature

Q: Q1.A glass vessel was filled with an unknown quantity of nitrogen gas and the pressure at 28°C was…

A: Hii there, since there are multiple questions posted. We are answering first question. If you need…

Q: If 25.8 L of H2 is collected at 1.34 atm and 38°C, what was the mass of magnesium reacted? Mg(s) +…

A:

Q: Which of the following statements is not true according to the kinetic theory of gases? (a)…

A: Gases do not have definite shape and definite volume. Kinetic theory of gases is used to measure the…

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: At an altitude of 11,000 m (a typical cruising altitude for a jet airliner), the air temperature is…

A:

Q: What volume of hydrogen gas is produced when 35.3 g of iron reacts completely according to the…

A: Ideal gas equation: PV = nRT P = pressureV = volumen = moles R = gas constantT = temperatureBalanced…

Q: Consider the reaction for the production of NO2 from NO:2 NO( g) + O2( g) → 2 NO2( g)(a) If 84.8 L…

A: a) Given : The volume of oxygen is 84.8 L. The pressure is 632 mmHg. The temperature is 35∘C  that…

Q: Calcium carbonate, CaCO31s2, the principal compound in limestone, decomposes upon heating to CaO(s)…

A: Given, P = 1.3 atm V = 250 mL T = 310C

Q: (a) A piston at 1.7 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to…

A: Since we know that, PV = constant...(Boyle's Law)... V/T = constant...(Charles law)...

Q: Consider the following chemical reaction: C(s)+H2O(g)→CO(g)+H2(g) How many liters of hydrogen gas is…

A: Given information,

Q: What volume of a chlorine gas is required to react completely with 0.309 mol of bromine according to…

A:

Q: Chlorine gas (Cl2) can be prepared on a small scale according to the following balanced equation:…

A: The balanced equation for the formation of Cl2(g) is: MnO2(s) + 4HCl(aq) → MnCl2(aq) + 2H2O(l) +…

Q: Hydrogen gas is collected at 40oC during the following reaction: Al          +            HCl…

A: The balanced chemical equation for the reaction between Al and HCl is shown below:…

Q: Consider the following chemical reaction: C(s)+H2O(g)→CO(g)+H2(g) How many liters of hydrogen gas…

A: Ideal gas law equation is equation which obeys gas laws under all condition of temperature and…

Q: Consider the reaction of 1.41 g Ca(s) with 107 mL of 0.325 M HBr(aq) according to the following…

A: The reaction taking place is given as, => Ca (s) + HBr (aq) -----> CaBr2 (aq) + H2 (g) Given :…

Q: Given the following chemical equation for the combination reaction of sodium metal and chlorine gas:…

A: Following information about the mass of sodium metal given -  Mass of sodium metal = 7.8 g  Also…

Q: 2. What happens to the volume of a gas in a cylinder with a movable (a) The pressure is doubled…

A: a). when pressure is doubled while temperature is kept constant: As per Boyles's law, pressure and…

Q: Consider the diagram on the left: 1.00 g H2(g) is maintained at 1 atm pressure in a cylinder closed…

A: Which sketch is best described the mixture obtained when 1.00 g He is added ?

Q: A mixture used by divers for breathing purposes contains 34.3% helium (He), 51.7% nitrogen (N2) and…

A:

Q: 13. Ammonia (NH3) burns in oxygen gas to form nitric oxide (NO) and water vapor. How many liters of…

A: The reactants are ammonia(NH3) and oxygen gas, O2(g).  The products are nitric oxide, NO(g) and…

Q: (a) A piston at 6 atm contains a gas that occupies a volume of 3.5 L. What pressure would have to be…

A: We would use gas laws ( Boyle's law , Charles' law , Gay-Lussac's law )  to solve these questions.

Q: How many moles of hydrochloric acid are needed to produce 9.46 L of chlorine gas according to the…

A: The given problem can be solved knowing equivalents of reactants used and products produced using a…

Q: A sample of limestone (calcium carbonate, CaCO3) isheated at 950 K until it is completely converted…

A: Given, 8.47 kg of solid Ca(OH)2 T = 950 K P= 0.976atm

Q: A sample of air contains 78.08% nitrogen, 20.94% oxygen,0.05% carbon dioxide, and 0.93% argon, by…

A: Given information The composition of gases in the air by volume is:  Nitrogen = 78.08 % Oxygen =…

Q: 25 g of hydrogen chloride have been treated with 50 g of manganese dioxide, obtaining manganese (II)…

A: Volume of chlorine obtained is: 4.31 LExplanation:

Q: Nhich list below is an allowable set of quantum numbers for an electron? mi m. 1 +1/2 -1 -2 b 2 -1…

A:

Q: A sealed flask contains 3.1 L of a gas at 2.4 atm and 22.7 °C. If the density of the gas is 9.7 g/L,…

A:

Q: Liquid oxygen was first prepared by heating potassium chlorate in a closed vessel to obtain oxygen…

A: Given: Volume=2.50 L Temperature T = 21oC + 273 = 294 K mass of KClO3 = 85.0 g molar mass of KClO3 =…

Q: ) If 300.0 grams of aluminum are mixed with 1800.00 ml of 6.0 M HCl, then how many ml of hydrogen…

A: It can solved using unitary method as follows

Q: Magnesium can be used as a “getter” in evacuated enclosuresto react with the last traces of oxygen.…

A:

Q: A cylinder of volume 27.0 L is filled with 25.1 g of jobstium gas (MM = 72.21 g - mol-1)from the…

A: Given the volume of cylinder i.e. gas =27.0 Lnumber of moles of gas =0.348 moltemperature =326 Kwe…

Q: In the reaction 2KClO3(s) --> 2KCl(s) + 3O2(g) If 22.4 L of oxygen at STP are needed, how many…

A: Potassium chlorate decomposes into potassium chloride and oxygen on heating. The equation for the…

Q: Given the following equation:   Al          +           HCl         →        AlCl3     +…

A: The reaction taking place is given as, => Al + HCl ------> AlCl3 + H2  Given : Volume of H2…

Q: A gaseous "CFC" compound has a density of 5.456 g/L at 0.993 atm and 22.0°C. (a) Calculate the molar…

A: Given , density of CFC =5.456gL Pressure = 0.993 atm temperature, T=22°C =(22+273)K=295 K

Q: In our campus, there are approximately 30.000 students use 2.5 x 109 kJ of energy per day. Suppose…

A: Giveln Pressure = 9186 torr = 9186/760 atm 5.059 g CO2(g), 3.106 g H2O(l) Volume = 580ml = 0.58L…

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

A:

Q: . Astudent doing this experiment collecte the following data: temperature of boiling water 99.7…

A: Given: Temprature of boiling water = 99.70C (T1) volume of water pulled into flask = 30.0 mL…

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: What mass of magnesium must be reacted with hydrochloric acid to obtain 750. mL of hydrogen at 25oC…

A: Find the moles of H2 gas using equation PV = nRT  then find the mass of Mg using the balanced…

Q: For many purposes we can treat ammonia (NH,) as an ideal gas at temperatures above its boiling point…

A:

Q: Consider the following reaction: 4Al (s) + 3O2 (g) → 2A12O3 (s) It takes 2.00 L of pure oxygen gas…

A: Given data: Volume = 2.00 L STP condition.

Q: 7. At what temperature does 456 mL of gas exist if it expands to 3.4 L at 65.0 °C?

A: The temperature and volume are directly proportional to each other.

Q: The industrial production of nitric acid (HNO3) is a multistep process. The first step is the…

A: The reaction taking place is given as, => NH3 + O2 ------> NO + H2O Given : Temperature = 33…

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.