The black powder used to propel a firework into the sky is made up of 72% by mass potassium nitrate (KNO3), 14% by mass charcoal, and the rest is sulfur. Use this information to calculate an answer to the following question: If you want to make 61 g of black powder, how many grams of potassium nitrate would you need?

Q: The active ingredient in aspirin is acetylsalicylic acid, which has the chemical formula . An…

A: The chemical formula of acetylsalicylic acid is C9H8O4. Given : Mass of acetylsalicylic acid in each…

Q: For the chemical reaction: Fe(NO3)2 + 2 КОН 2 KNO3 + Fe(ОН)2 Which of the following is the correct…

A: Given  Number of mole of Fe(NO3)2  = 3.10 mole mass of potassium nitrate     = ?

Q: grams

A:

Q: If 3.6 g of hydrogen gas reacts with 5.3 g of nitrogen gas, what is the maximum amount of ammonia…

A: The formation reaction for ammonia is as follows: Here, it can be seen that the nitrogen and…

Q: Which one is a FALSE statement? O The chemical formula CuBr2 indicates that this compound is…

A: We have to predict the false statement.

Q: A particular ore of lead, galena, is 10.0% lead sulfide, PbS, and 90.0% impurities by weight. What…

A: we  need to calculate mass of Pb in the ore

Q: The compound MgSO4, Epsom salts, is used to soothe sore feet and muscles. How many grams will you…

A: Number of atoms, ions and molecules present on a given amount can be determined by “Mole Concept”.…

Q: Hydrogen gas is considered a clean fuel because it produces only water vapor when it burns. If the…

A: Combustion reaction of hydrogen gas is  H2 + 12 O2 → H2O   Given that , mass of water (H2O) formed =…

Q: If you react 5.2 grams of magnesium metals with 2.3 grams of copper (II) bromide, how many total…

A: Given : Mass of magnesium i.e Mg taken = 5.2 g And mass of copper (II) bromide i.e CuBr2 taken = 2.3…

Q: The chemical formula for octane is: CH;(CH,),CH, Calculate the molar mass of octane. Round your…

A: To calculate the molar mass of octane.

Q: The chemical formula of trinitrotoluene (TNT) is C7H5N3O6. What is the molecular mass of TNT?…

A: We have to find the molecular mass of trinitrotoluene (TNT) is C7H5N3O6. Atomic mass of Carbon =…

Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +  H2(g) 4 HSiCl3(l)  →  SiH4(g)  +  3 SiCl4(l)  2.42 moles of…

Q: The chemical formula for propane is: CH,CH,CH, Calculate the molar mass of propane. Round your…

A: Molar mass of compound is sum of molar mass of each atom.

Q: Caffeine, a stimulant found in coffee, contains 49.5% C, 5.15% H, 28.9% N, and 16.5% O by mass and…

A: First we calculate the emperical formula . Then claculate n with the help of molar mass as given in…

Q: Moles NH, (mol) 2. Rise Mass NH, (g) Rise Icnis Ik the chemical equation. Mole Ratio of NH,:N, Mass…

A: Here we are using mass by simple mole concept

Q: 1. Ammonia, NH3, a common fertilizer is made by causing hydrogen (H2) and nitrogen (N2) to react at…

A:

Q: How many grams of carbon dioxide will you get if you burn 400 lb of a hydrocarbon that contains…

A: Answer

Q: A mixture consisting of 12.8 g of calcium fluoride and 13.2 g of sulfuric acid is heated to drive…

A: Stoichiometry, in balanced chemical reaction is defined by the ratio at which reactants are reacting…

Q: If we have 12.4 grams of methane and 39.4 grams of oxygen, which is the limiting reactant in this…

A: Given , we have 12.4 grams of methane and 39.4 grams of oxygen

Q: Methanol can be formed by the following UNBALANCED equation below. What is the mass in grams of…

A:

Q: A diamond contains 5.0x1021 atoms of carbon. What amount(moles) of carbon and what mass(grams) of…

A: No. of atoms of 'C' = 5.0×1021 atoms Calculation of no. of mol of 'C': n=No. of atoms6.022×1023…

Q: If 4.41g of nitrogen reacts with 2.00g of hydrogen to produce ammonia, what is the limiting reactant…

A: Given: The weight of nitrogen is 4.41 g. The weight of hydrogen is 2.00 g.

Q: A chemist is attempting to synthesize, or create ammonia, NH3 in the laboratory. He reacts 14.6g of…

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

Q: The chemical formula for diethyl amine is: (CH,CH,), NH Calculate the molar mass of diethyl amine.…

A: Atomic mass of carbon : 12.0107 u  Atomic mass of Hydrogen : 1.007844 u  Atomic mass of Nitrogen :…

Q: Calcium phosphate reacts with silicon dioxide and carbon to produce calcium silicate, CaSiO3,…

A: Molar mass of calcium phosphate = 310 gm Molar mass of Silicon dioxide = 60 gm Molar mass of carbon…

Q: Calculate the amount of  anions (in moles) in 8.6 g of magnesium perchlorate. Express your answer…

A: Magnesium perchlorate, Mg(ClO4)2 dissociates into three ions as given by the equation: Mg(ClO4)2 →…

Q: If 60.2 grams of Hg combines completely with 24 grams of Br to form a compound, what is the %…

A: Given: Mass of mercury (Hg)=60.2 g Mass of Bromine (Br)=24 g The total mass of compound =(60.2 +24)…

Q: The black powder used to propel each firework into the sky made up of 75% by mass potassium nitrate,…

A: Given, 75% by mass potassium nitrate15% by mass charcoal10% by mass sulphur65.0 grams of charcoal

Q: This Is the chemical formula for talc (the main Ingredient In talcum powder): Mg,(Si,0,),(OH), An…

A: Using the number of moles of oxygen, we will calculate the moles of hydrogen in the talc from its…

Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: Given data, Moles of Si = 2.51moles Given equations: Si(s)  +  3 HCl(g)  →HSiCl3(l)  +  H2(g)…

Q: 1)Copper metal reacts with molecular nitrogen to form copper(II) nitride.  a)Write the balanced…

A:

Q: How

A: We will calculate number of anions.

Q: The reaction between potassium chlorate and red phosphorus takes place when you strike a match on a…

A: The given reaction is not balanced. The balanced reaction is as follows. 10 KClO3+3 P4 →3 P4O10 + 10…

Q: If 41.2 g of molten iron(II) oxide reacts with of 20.0 g of magnesium, what is the mass of iron…

A:

Q: w many hydrogen atoms can you find in 50.0 g of H2

A: The amount of any substance is measured in a unit known as a mole which is equal to 6.023 x 10^23…

Q: Consider the following unbalanced chemical equation. LIOH(s) + CO,(g) → Li,CO3(s) + H,0(1) If 68.1…

A: Given data,Mass of LiOH=68.01gGiven reaction;LiOH(s)+CO2(g)→Li2CO3(s)+H2O(l)

Q: How many grams of hydrogen, H2, are produced from 29.3 g of aluminum, Al?

A: Given Synthesis of H2 from Al

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si,O3),(OH), An…

A:

Q: If 90.0  grams of isopropyl alcohol ( C3H7OH) burns in air, how many molecules of carbon dioxide…

A: Solution— Moles of isopropyl alcohol = mass of isopropyl alcoholmolar mass of isopropyl alcohol…

Q: Gaseous bulane(-3-2/2 ,CH3) will react with gaseous oxygen (0)) to produce gaseous carbon dioxide…

A: Balanced equation: 2C4H10 (g)  +   13O2 (g)  -------->   8CO2 (g)  +    10H2O (g) Number of mols…

Q: Brasses are alloys in which copper is the primary component and zinc is the second most abundant…

A: Given: % of Zinc in naval brass = 39.25 % Mass of sample of naval brass = 72.1 g Molar mass of Zinc…

Q: a. Calculate the molar masses of these two compounds(CH2FCF3 and CHClFCF3). b. What is the percent…

A: a) This question asks us to find the molar mass of two compounds given. b) Percentage composition…

Q: A student is running an experiment in which 71.1 grams of MnSO, is needed, but the only jar of…

A: Given: The mass of MnSO4 required for performing an experiment is 71.1 g.

Q: Liquid octane (CHa (LH2)6 CH.) will react with gaseous oxygen (0)) to produce gaseous carbon dioxide…

A:

Q: Sulfur trioxide can react with atmospheric water vapor to form sulfuric acid that falls as acid…

A: Given :  Number of molecules of SO3 = 3.65 x 1020  Also, molar mas of SO3 = 80 gm/mol

Q: The atomic mass of Cl is 35.45 amu, and the atomic mass of Al is 26.98 amu. What are the masses in…

A: Atomic masses of Chlorine and Aluminum are given as: Cl = 35.45 amu Al = 26.98 amu Molecular mass of…

Q: If 0.537 g of copper completely reacts with 0.321 g of fluorine to form a compound, what is the…

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

Q: the maximum amount of SF6 that can be produced from the reaction of 32.1 g of sulfur with 114 g of…

A: Limiting Reagent : The limiting reagent is a reactant species taking part in a chemical reaction…

Q: A Freon leak in the air conditioning system of an older car releases 28 g of CF2C12 per month. Part…

A: The car release 28 g of CF2Cl2 in a month. The mass of chlorine emitted into the atmosphere each…

Q: How many atoms of C are present in 22.3 g of C?

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.