A chemist decomposes samples of several compounds; the masses of their constituent elements are shown. Calculate the empirical formula for each compound. . a. 1.245 g Ni, 5.381 g I

Q: A sample of copper (II) nitrate hydrate has a mass of 1.278 g. The sample is heated until all water…

A: Given , mass of copper (II) nitrate hydrate= 1.278 g        mass of anhydrous copper (II) nitrate  =…

Q: A compound is 47.35% carbon by mass, 10.60% hydrogen by mass and 42.05% oxygen by mass. What is the…

A: Calculating empirical formula.

Q: Please provide all the work in detail because I will be using this to study

A: Amount of C = 0.532 g Number of mol of C = given mass / molar mass = 0.532 g / 12.011 g/mol = 0.044…

Q: Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A:

Q: What is the molecular formula of each compound? a. empirical formula CH (MM = 78.11 g/mol) b.…

A: we are required to find the molecular formula for each of the given empirical formula

Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO,…

A: Given,

Q: Explain how molecular and structural formulas symbolize the composition of compounds

A: Chemical substances written in the form of symbol and formulas of their elements is known as…

Q: Napthalene is an aromatic organic molecule that contains 10 carbon atoms and 8 hydrogen atoms. a)…

A:

Q: a 2.558 g sample of sodium carbonate hydrate was heated to drive off the water resulting in 0.948 g…

A: The substance which contains water or its constitute element is known as hydrate.

Q: A compound was analyzed and the following results were obtained: • Molar mass: 270.4 g/mole • Mass…

A: The chemical formula of an unknown compound is determined by the percent by mass of the elements…

Q: Determine the mass in grams of 6.07 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A:

Q: You will see similar questions like: A mineral sample is obtained from a region of the country that…

A:

Q: Consider a 7.36 gram sample of Calcium Phosphate.  1. How many formula units of calcium phosphate…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Part II- Moles 3) What is a mole? Describe the mole in terms of atoms, molecules and grams. DiscUss…

A: A mole is defined as 6.02214076 × 1023 of an atom, molecule, ion, or any other chemical unit. 1 mol…

Q: Rubbing Alcohol was found to contain 60.0% carbon, 13.4% hydrogen, and the remaining mass was due to…

A: Empirical formula: The chemical compound is the simplest whole number ratio of atoms present in a…

Q: Samples of several compounds were decomposed, and the masses of their constituents elements were…

A:

Q: A sample of pure carbon disulfide has a mass of 45.05 g. How many molecules of carbon disulfide…

A: Number of mols = weight / molecular weight  Number of molecules  = number of mols × 6.023 × 1023

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: The elements present in the compound are given as Be, S and O. Hence we can assume that the…

Q: Determine the mass in grams of 2.31 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A: The relation between mass and number of atoms:                                    Mass(g)molar…

Q: Caffeine, a stimulant found in coffee and soda, has the mass percent composition: C, 49.48%; H,…

A: GIVEN: The mass % of carbon= 49.48% The mass % of hydrogen=5.19% The mass % of nitrogen=28.85% The…

Q: A certain compound is 52.2% carbon, 13.0% hydrogen, and 34.8% oxygen. Find the empirical formula of…

A: In order to find the empirical formula we first write down the given data: % of carbon= 52.2%. % of…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: The chemical formula of a compound provides the number of atoms of different elements present in the…

Q: A compound consists of carbon and hydrogen. The molar mass of this compound is 44.1 g/mol. The…

A: Molecular formula of any compound can be determined by knowing the number of moles of each element…

Q: Please provide all the work in detail because I will be using this to study

A: Consider the mass of compound is one gram.  The percent of each element is converted to grams as,

Q: Determine the mass in grams of 4.38 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A:

Q: Magnesium oxide contains 60.3 % magnesium by mass. Calculate the mass of magnesium oxide sample if…

A: Given,Mass percent of magnesium in magnesium oxide = 60.3%.Mass of magnesium in sample = 20.5g.

Q: c- The formula for water is contains .. (... x1+...X 16 =....) D- the combustion of fuels is…

A: Water is a compound and is made of Hydrogen and oxygen. Chemical reactions are of various types-…

Q: In one of your experiments, you made magnesium oxide by burning magnesium in the air. How much Mg is…

A: Magnesium reacts with oxygen to make a compound called magnesium oxide. The bright light results…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: In chemistry, what is meant by the term “mole?” What is the importance of the mole concept

A: Mole is a unit to  express the mass, Number and volume of a Substance in Chemistry.  It is a bigger…

Q: A sample of ammonia(NH3 17.03 g/mol) has a mass of 56.6 g. How many molecules are in this sample (1…

A: mol designates 6.022 * 10 raise to power 23 molecules.

Q: The elemental mass percent composition of ibuprofen is 75.69% C, 8.80% H, and 15.51% O. Determine…

A: Given information:Mass percent composition of carbon = 75.69  %Mass percent composition of hydrogen…

Q: Determine the number of atoms in 61.0 grams of bromine, Br. (The mass of one mole of bromine is…

A:

Q: Sodium and nitrogen form two different binary compounds. The percentages in the two compounds are:…

A: a) Step 1: Conversion of mass % to grams. Assume the weight of the compound is 100 g. Thus, in 100 g…

Q: A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in anhydrous cobalt (II) sulfite…

A: We have given that   A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in…

Q: A compound contains 21.20% nitrogen, 6.06% hydrogen, 48.45% oxygen and sulfur. Write the empirical…

A: Given, Percent of nitrogen in the compound = 21.20 % Percent of hydrogen in the compound = 6.06 %…

Q: 5. A sample of a compound contains 36.5% sodium, 25.4% sulfur, and 38.1% oxygen. Determine the…

A:

Q: Determine the number of sodium atoms in 49.78 g of the element.

A: Given: Mass of sodium i.e. Na = 49.78 g.

Q: Determine the number of atoms in 13.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Given, mass of Calcium = 13.0 g Mass of one mole of calcium = 40.08 g i.e Its molar mass is 40.08…

Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: Two binary oxides of the element manganese contain, respectively, 30.40% and 36.81% oxygen by mass.…

A: Empirical formula refers to the formula of a compound in which the elements are present in the…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Empirical formula is the simplest ratio of the elements present in the given molecular formula.…

Q: Calculate the mass in grams of 15 atoms C

A: Mole is defined as    Interms of particles :  1 mole = 6.022 x 1023 atoms  Interms of mass :  1…

Q: Determine the number of atoms in 33.0 grams of vanadium, V. (The mass of one mole of vanadium is…

A: Given is,  Mass of vanadium = 33.0 g Molar mass of Vanadium = 50.94 g/mol

Q: formula of the hydrate

A: When a hydrous salt is heated, it loses the water of crystallization. Water of crystallization =…

Q: Rubbing alcohol was found to contain 60.0 % carbon, 13.4 % hydrogen, and the remaining mass was due…

A: We have 60% C, 13.4% of H and rest as O. We have to calculate the empirical formula.

Q: A2.87g sample of carbon reacts with hydrogen to form 3.41g of car fuel.What is the empirical formula…

A: Empirical Formula:  A formula having the simplest ratio of  elements in a compound rather than the…

Q: Determine the number of atoms in 53.0 grams of bromine, Br. (The mass of one mole of bromine is…

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.