The question: Find the percent composition of carbon in acetaminophen, Aspirin, Ibuprofen and Naproxen.

Q: Acetylene (C₂H₂) gas is often used in welding torches because of the very high heat produced when it…

A: Answer: This question is based on the stoichiometry of combustion reaction of acetylene where it is…

Q: How many molecules of sulfuric acid are in 5.00 g of sulfuric acid? Write your answer with the…

A:

Q: If 3.500 moles of MgSO4.7H2O is heated to a constant weight, how many grams of water will be…

A: 1.)  When MgSO4.7H2O is heated to constant weight , all water molecules of crystallization gets…

Q: What is the maximum mass of pure titanium that could be extracted from 80.0 g of ilmenite , a…

A: The objective of this question is to calculate the maximum mass of pure titanium that can be…

Q: An analytical chemist measures the amount of Elements E₁ and E₂ in four samples of an unknown…

A: Pure substance:-  The substance in which the ratio of each element mass is constant for all randomly…

Q: nit symbol if necessary, and round it to 3 signific

A: Mass of compound = 70.0 g Molar mass of compound = 143 g/mol Moles = mass/MM   = 70.0/143 = 0.490…

Q: What is the mass of 2.41 moles of AgN*O_{3} ? Write your answer to 2 decimal places and include the…

A: Given  Moles of AgNO3 = 2.41 mol

Q: A 2.37 gram sample of a KCI and KCIO3 mixture was found to contain 0.01611 mol of KCIO3. What is the…

A: Mass of mixture of KCl and KClO3 = 2.37 g Number of moles of KClO3 = 0.01611 mol Molar mass of KClO3…

Q: Why is the mole an important unit to chemists?

A:

Q: Questions 29 and 30 refer to the following information There are two possible compounds made from…

A: Given Mass of beaker  = A 47.94 g Mass of beaker + Lead chloride. = B 51.43 g Mass of Lead…

Q: mmonium perchlorate  NH4ClO4  is the solid rocket fuel used by the U.S. Space Shuttle. It reacts…

A:

Q: How many atoms of hydrogen are in 2.22E1 g of methane?   Respond with the correct number of…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Before 1982 the U.S. Mint cast penny coins made of a copper and zinc mixture. If a 1980 penny has a…

A: The mass percentage is an important method which is used to express the concentration of a solution.…

Q: A 0.7547 g sample of nicotine was analyzed and found to consist of 0.5588 g C, 0.06565 g H, and…

A:

Q: Rose gold is a mixture of gold, copper, and silver atoms. It contains 58.3% gold, 33.5% copper, anc…

A: To solve this problem first we calculate the mass of rose gold then we calculate the mass of copper…

Q: silicon by mass. How much oxygen will 10 g of silicon combine with?

A: 1 mol contain 6.022 × 1023 atoms.The mole is an SI unit used to measure the amount of any substance.…

Q: A chemist has two different gasohol mixtures available. One contains 20% alcohol and the other 12%…

A:

Q: Question 9 A researcher is using 5.43 x1023 molecules of chlorine gas (Cl2) in an experiment. How…

A:

Q: A compound contains iron and bromine. A sample of the compound contains 6.371 g of iron and 10.991 g…

A:

Q: T Questions 1-2: KC103 2 KCI+ 02 1. How many grams of O2 are produced from the decomposition of 8.56…

A: There are four questions are given but I'm solving first two questions according to the guidelines…

Q: Calculate the number of oxygen atoms in a 100.0 g sample of scheelite (Ca WO,). Be sure your answer…

A: Number of moles of a compound is equal to the mass of substance divided by its molar mass.

Q: Part A The American Dental Association recommends that an adult female should consume 3.0 mg of…

A:

Q: what is the percent by mass of sugar in a mixture that contains 157 g of salt, 1.215 kg of flour and…

A: Given, mass of salt = 157 g Mass of flour= 1.215 Kg 1 Kg = 1000 g 1.215 Kg = 1.215 x 103 g Mass of…

Q: Use the equation to answer the questions. Round both answers to nearest whole number. Y = 51.75 1.25…

A: •Given:-    Y = 51.75 - 1.25 X •Here we have to calculate value of X for given values of Y.

Q: A) a 10.00g unknown sample with a formula of CxHY was analyzed by combustion analysis. The sample…

A: The values are given as follows:

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

A: The molecule of Mg3(Si2O5)2 (OH)2 contain  3mol of Mg and 12 mol of O

Q: Given the following reaction: NaCl + AgNO3 → AgCl + NaNO3 How many grams of AgCl will be produced…

A:

Q: Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: We have to calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetraoxide…

Q: Calculate the number of hydrogen atoms in a 140.0 g sample of tetraborane (B,H0). Be sure your…

A:

Q: Question 5

A: Given, Volume of CCl4 = 2.00L Density = 1.60g/mL

Q: An unknown compound has the following chemical formula: NxO where  x  stands for a whole number.…

A:

Q: A typical "lcad" pencil is actually made from carbon. If the carbon in the pencil weighs 1.50 gram…

A: Number of moles of a chemical compound is used to measure the amount of compound in the given…

Q: Determine the number of carbon atoms in a 381 mg tablet of acetaminophen (C3H9NO2). Given: Molar…

A: Given: Mass of C8H9NO2 = 381 mg = 0.381 g                  (Since 1 g = 1000 mg) And molar mass of…

Q: Another hydrated compound containing Sodium, Boron and Oxygen was investigated.  250.00 g of the…

A: When NawBxOy×Z H2O is heated, the water molecules attached are removed and then decomposed to give-…

Q: 1. A student measured a 6.790 g sample of a hydrated salt. After heating, the mass of anhydrous salt…

A: a. Given that weight of hydrated salt is 6.790 g and mass of anhydrous salt is found to be 4.501 g.…

Q: What are the proper units for molar mass in chemistry? O kg/cm O g/mL g/mol

A:

Q: Calculate the number of hydrogen atoms in a 150.0 g sample of hydrazine (N,H). Be sure your answer…

A: Solution Hydrazine is additionally known as as organic compound or Diazane or gas binary compound…

Q: 10. CHALLENGE. You have two distinct gaseous compounds made from element X and element Y. The mass…

A: The simplest possible formulas for reactants and products in the given chemical…

Q: A chemist needs 1.25 moles of sugar to dissolve in 1 liter of water. How many grams of sugar will…

A:

Q: Sucrose has the molecular formula If a sucrose sample C12H22O11. contains 5.0 x 1022 atoms of…

A: Given ->  Molecular formula of sucrose = C12H22O11 Number of atoms of carbon = 5.0 × 1022 atoms…

Q: A 0.4017 g sample of nicotine was analyzed and found to consist of 0.2974 g C, 0.03494 g H, and…

A:

Q: A chemist measures the amount of chlorine gas produced during an experiment. He finds that 11.0 g of…

A: Given,Mass of Chlorine gas = 11.0 gAtomic mass of Cl = 35.45 g/mol.

Q: Acetylene (C2H2) gas is often used in welding torches because of the very high heat produced when it…

A: The reaction of acetylene with oxygen gas that produces carbon dioxide gas and water vapour can be…

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.