How many molecules of NO2 are present under these conditions at 20 °C in a room that measures 15 * 14 * 8 ft?

Q: How many moles of Zn would be required to produce 4 moles of hydrogen gas using the following…

A: Given : number of moles of H2 = 4 mol  Zn and H2 are present in ratio 1:2

Q: 5. What mass of C2H6O is needed to react with 256 g O2?

A: When C2H6O reacts with Oxygen it generates CO2 and H2O. Using stoichiometric of balanced reaction we…

Q: How many g of Al2(SO4)3 can you prepare from 2.5 g of H2SO4  ?

A: When H2SO4 react with Al(OH)3 it form Al2(SO4)3 and H22O as product.

Q: How many atoms of Al are needed to react with 34.5 grams of O2 gas?

A: Introduction: Stoichiometry is a process that used to calculate amounts in reactions by using the…

Q: Vanadium (V) oxide is decomposed into the elements sodium and chlorine by means of electrical…

A: 2V2O5 --> 4V  + 5O2 this oxygen oxidises sulphur to sulphur dioxide 5S  +   5O2 --> 5SO2  five…

Q: Suppose you have a glass of water with 15 ppb of lead in it. How many atoms of lead ar in the glass…

A: Calculate the mass of lead present in water then convert the mass into number of atoms.The…

Q: How many mol of C3H8 are needed to make  13.5 mol of CO2 ?

A:

Q: b. What volume of 2MNAOH will react with 34.0 g of FeCl3?

A: b) mass of FeCl3 = 34.0 g molar mass of FeCl3 = 162.2 g mol-1

Q: What volume of 0.333 M Al(NO3)3 is needed to obtain 26.7 g of Al(NO3)3?

A: Given:: Molarity of Al(NO3)3=0.333 M mass of Al(NO3)3= 26.7 g molar mass of Al(NO3)3= 213 g mol-1…

Q: How many grams of hydrogen gas would be produced when 6.0 grams of magnesium reacts with excess of…

A: Magnesium is the limiting reactant. One mole of magnesium produce one mole of H2. 24.305 g Mg =…

Q: What volume of 1.85 M KOH will react completely to 100.0 g of Al2S3?

A: Here we are required to find the volume of 1.85M KOH required to react with aluminum sulphide

Q: How many moles of ammonia would be required to react exactly with 0.230 moles of copper(II) oxide in…

A: Given that:  Moles of CuO = 0.230 moles Moles of ammonia = ?

Q: 1. Calculate the amount of moles of oxygen that is needed to react with 2.4 mol of ammonia to…

A: 1)  Given, 2NH3 + 3O2 + 2CH4  ➝ 2HCN + 6H2O moles of ammonia (NH3) react = 2.4 mol moles of oxygen…

Q: How many moles of ammonia would be required to react exactly with 0.470 moles of copper(II) oxide in…

A: Balancing of chemical reaction- It consists of reactant (starting material) and products…

Q: Is a solution of mercury II ions stable or unstable in water?

A:

Q: What is the mole ratio of H2O to H3PO4 in the following chemical equation? P.O10+6H,0 → 4H,PO, a. 4…

A: The balanced chemical reaction is the chemical reaction in which elements present in the reactant…

Q: How many grams of O2 are needed to produce 5.00 moles of Fe2O3?

A:

Q: How many grams of KClO3 are required to form 7.09 g of O2?

A:

Q: When strongly heated, boric acid breaks down to boric oxide and water. What mass of boric oxide is…

A: Solution Boric chemical compound, the pure variety of B2O3, may be a laborious glassy material,…

Q: If 1.33 mol of PbS is heated in air, what amount of O2 is required for complete reaction? What…

A:

Q: How many moles of ammonia would be required to react exactly with 0.548 moles of copper(Il) oxide in…

A: 2NH3(g)+3CUO(S)----->3CU(S)+N2(g)+3H2O(g) Given, no of mole of Copper(II) oxide=0.548

Q: What is the mass percentage of iodine in a solution containing0.035 mol I2 in 125 g of CCl4?

A: Given Moles of I2 = 0.035 mol   and mass of CCl4 = 125 g Molar mass of I2 = 253.8 g/mol Molar mass…

Q: 3. The reaction between Phosphoric Acid (H3PO4) with Calcium Hydroxide yields Calcium Phosphate and…

A:

Q: How many moles of H2O2 are produced in the production of hydrogen peroxide when 13 grams of oxygen…

A:

Q: What is the molecularity of the following reaction? CH4(g) + 2O2(g) → CO2(g) + 2H2O(g)

A: The molecularity of a reaction is defined as the sum of number of reactant molecules reacts to bring…

Q: 93.3 mL of dry Gas A, at 21°C and an atmospheric pressure of 0.987 atm, reacted with 18.6 mL of a…

A: The formula used to obtained number of moles: P is the pressure. V is the volume. n is the number…

Q: How many molecules of CO2 are present in 33.6g of CO2?

A:

Q: 4. How many moles of water are present in a 20.00 gram sample of lithium permanganate, LiMnO4-3H2O?

A: by using mole concept we easily determine the mole of element are present in reactent and products.

Q: What is the mass (in kg) of 6.89 × 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol. O…

A:

Q: 3. What is the percentage of sulfur in a sample of 2 gm of coal that gave a precipitate of 0.084 g…

A: Moles of sulfur ( S ) atoms = moles of BaSO4 =  given mass of BaSO4molar mass of BaSO4 = 0.084233.4…

Q: 2) How many moles of sodium will react with water to produce 4.0mol of hydrogen in the following…

A: Sodium metal is a highly reactive metal and it reacts with water readily to form the base and…

Q: What mass is Na2CO3 is needed to produce 5.Og of CO2

A:

Q: (b) Write chemical equations for the following processes: (i) Chemical reaction for AH°, for…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: What is the mass in grams of NO that will be produced from 33.5 g of NO₂ reacted with excess water…

A:

Q: How many grams of ammonium carbonate are needed to produce 500L of carbon dioxide if the density of…

A: Density can be calculated using the equation given below: Density = massVolume

Q: The concentration of gold in seawater is 0.027 ug/L. What mass of goid (in kg) is present in the…

A: Given: The concentration of Gold in sea water= 0.024 ug/L. i.e,  1 Liter of seawater contains =…

Q: How many grams of H2 will result from the reaction of 100 g of CaH2 with excess H2O?

A: The Reaction is  CaH2+2 H2o- Ca(oH) 2+ 2H2 1 mole of CaH2 will give 2 miles of H2

Q: One can prepare homemade lavender perfume by steam distillation. One of the main components in the…

A: The explanation is given below-

Q: (a) Write chemical equations to show what happens when each of the following substances is mixed…

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

Q: What mass of ammonium phosphate is produced by the reaction of 5.94 g of phosphoric acid?

A: The balanced reaction for the formation of ammonium phosphate is- H3PO4+3NH3→(NH4)3PO4

Q: Calculate the percentage composition of Ca in CaSO4.

A: Molecular weight of CaSO4 = 136.14g/mol Molecular mass of calcium = 40.078g

Q: Give the empirical formula of an oxide of lead that contains 90.65% Pb.

A: Given percentage of Pb = 90.65 %  Let the total mass of oxide be 100 g.  Mass of Pb = 90.65 g  Mass…

Q: The Le Blanc Process for the manufacture of soda ash encompasses the four steps: NaCl + H2SO4 =…

A: The Le Blanc Process for the manufacture of soda ash encompasses the four steps. The balanced…

Q: How could you separate the components of a mixture of CaSO4 and Ca(NO:)2 and recover the two…

A: Given: A mixture of CaSO4 and Ca(NO3)2.

Q: How many moles of NO, would be required to produce 2.75 moles of HNO, in the presence of excess…

A: Consider the given balanced equation is as follows; 3 NO2g   +    H2Ol   →    2 HNO3g    +  NOg…

Q: What is the mass in grams of carbon dioxide that would be required to react with 38.4 g of LIOH in…

A: Mass of LiOH = 38.4 g Mass of CO2 = ?

Q: whats the mass of lioh do we need to keep 3 astronauts and a chimp alive for 7 days in space assume…

A: No. Of days to stay = 7 days  No. Of Astronaut= 3 Amount of CO2 released per astronaut per day = 540…

Q: Assuming 11.5 L of CO2 are produced from this reaction, how many moles of CaCO3 are needed? Caco3 -…

A: Given in the question, The complete balanced equation = CaCO3 → CaO + CO2 Volume of CO2 produced =…

Q: Write the complete formula equation and balance the following: 1, decomposition of water 2.…

A: The equations are as follows:

Q: Calculate the molar mass of barium hydroxide octahydrate, Ba(OH)2•8H,O(s). (Hint: The molar mass of…

A:

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".