A chemist decomposes samples of several compounds; the masses of their constituent elements are shown. Calculate the empirical formula for each compound. 2.128 g Be, 7.557 g S, 15.107 g O

Q: The molar masses and empirical formulas of several compounds containing carbon and chlorine are as…

A: given: 284.77 g/mol, CCl 131.39 g/mol, C2HCl3 181.44 g/mol, C2HCl   a) empirical mass of CCl =…

Q: 104. An ionic compound that is 62.56% lead, 8.46% nitrogen, and 28.98% oxygen is used as a mordant…

A: Molecular formula = n x empirical formula

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

A: Number of moles of Mg and O can be calculated by the equation given below:

Q: Write the empirical formulas of the following compounds: (a) Al,Br6, (b) Na,S,O4, (c) N,O5, (d)…

A: Interpretation -  To write the empirical formula of the given compounds -  Al2Br6 Na2S2O4 N2O5…

Q: Complete the table. Element Mass Moles Number of Atoms Pt 0.0449 Fe 1.14 x 1025 Ti 23.8 mg Hg 2.05

A: Pt : Mass of Pt = moles x molar mass = 0.0449 x 195 = 8.76 g Number of atoms of Pt = moles x…

Q: The molar masses and empirical formulas of several compounds containing carbon and nitrogen are…

A: The relatively simple positive integer ratio of all atoms contained in a chemical compound is…

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: A drop of water has a volume of approximately 0.05 mL. How many water molecules does it contain? The…

A: The concentration of any substance can be expressed in different ways such as molality, molarity,…

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

A:

Q: How many molecules are in each sample? a. 6.5 g H,0 b. 389 g CBr, c. 22.1 g O, d. 19.3 gC,H10

A: a) 2.5g H2O = Mass of H2O = 6.5g Molar mass of H2O = 18g/mol The number of molecules can be…

Q: Calculate the formula mass for each compound.a. NO2 b. C4H10 c. C6H12O6 d. Cr(NO3)3

A:

Q: The elemental analysis of a sample of lonic compound gave the following results: 2.82 g Na, 4.35 g…

A: Given :-  mass of Na = 2.82 g  mass of Cl = 4.35 g  mass of O = 7.83 g  To determine :-  empirical…

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

A:

Q: what is the emperical and molecular formula of these compound?  Given: molecular mass 70 g contains…

A:

Q: chemical formula

A:

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 number of atoms in 77.0 grams of bromine,  Br ( The mass of one mole of bromine is…

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

Q: 73: A 1.912-g sample of calcium chloride is decomposed into its constituent elements and found to…

A: The percent mass composition of an element of a compound gives the concentration of an element of a…

Q: What information must a chemist have to determine the molecular formula for a compound?

A: Molecular formula is the actual number of atoms of each element in the one molecule of the compound.

Q: A student has a sample of zinc that weighs 22.19 g How many zinc atoms are in this

A: Given :- mass of Zn = 22.19 g  To be calculated :- number of Zn  atoms  molar mass of Zn = 65.38…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: 1- First calculate the moles of compound XBr3  moles of XBr3 = ( moles of Br ) / 3  moles of XBr3 =…

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: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: how many  atoms of carbon in 12.77 g manganese (III) oxalate.

A: Molecular formula of Manganese oxalate is C2H2MnO4 . 1 molecule of manganese oxalate contains 2…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

A:

Q: A sample of a compound was found to contain 54 grams of aluminum, 96 grams of oxygen, and 6 grams of…

A:

Q: What is the empirical formula of an unknown compound that contains 48.02% Carbon, 18.74% hydrogen,…

A: The simple number of atoms present in the molecule is shown below.

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 compound has an empirical formula of C 8H 17. If a sample of the compound contains 4.90 grams of…

A: To solve this problem we will first find the number of moles of carbon from the given mass then…

Q: 15. An oxide of lead contains 90.65% Pb, by weight. The empirical formula is: * Pb02 O Pb304 Pbo Pb…

A: Pb, atomic mass = 207 g/mol Percentage = 90.65 Relative number of moles = 90.65/207 =  0.437 O2,…

Q: The compounds listed are found in many natural flavors and scents. Calculate the empirical formula…

A: The empirical formula for each of the following compounds can be calculated as :

Q: An iron-containing compound is 20.1% Fe, 11.5% S, 63.3% O, and 5.1% H. What is the empirical formula…

A: First of all, we will calculate the number of moles of each element from given mass and then, we…

Q: A metal (M) forms a compound with the formula MCl3. If the compound contains 65.57% Cl by mass, what…

A: Let the mass of the compound be 100 g. Mass of chlorine present in the compound = 65.57 g Mass of…

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: What are the formulas of the following substances? (a) PCI;; Molec. mass = 137.3 amu (b) Nicotine,…

A: Molar mass is defined as an average mass of atoms present in the chemical formula. It is the sum of…

Q: Iron is a metallic element, find the number of proton, -2 Fe electron and neutron 3- Write the…

A: In an neutral atom number of Protons must be equal to number of electrons Given : Atomic number of…

Q: A drop of water has a volume of approximately 0.05 mL. How many water molecules does it contain? The…

A: Density of a substance is equal to the mass of the substance divided by its volume. Write the…

Q: Chemical formulas can be written as empirical formulas, molecular formulas, or structural formulas.…

A: The solution is given below -

Q: Using the average atomic masses for each of the following elements, calculate the mass (in amu) of…

A: Average atomic masses of the following species is as follows - Na = 22.9898 amu Li = 6.941 amu Mg =…

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 is 24.7% Calcium, 1.2% hydrogen, 14.8% carbon, and 59.3% oxygen. Write the empirical…

A: Given: Mass percent composition of calcium is 24.7%. Mass percent composition of hydrogen is 1.2%…

Q: A metal (M) forms a compound with the formula MI2. The compound contains 79.97% I by mass. Identify…

A: Given:Molecular formula of compound = MI2Mass % of I = 79.97%We need to identify the metal in the…

Q: empirical formula and formula mass of the compound

A: Empirical formula is the formula which consists atoms of each element in simple whole number ratio.…

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: Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4, of mass 23.5 mg.

A: Given, Mass of cocaine hydrochloride, C17H22ClNO4 = 23.5 mg Number of moles is the total mass of…

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and 0.440 g of…

A: To solve thia problem first we have to calculate the number mole of C and H in the given sample.  By…

Q: Element A is an atomic element, and element B is a diatomic molecular element. Using circles to…

A: It is given that element A is an atomic element and circles are used to represent the atoms of A.…

Q: What is an empirical formula? What is a molecular formula? Do ionic compounds have molecular…

A: Empirical formula  :-   The empirical formula is the simplest formula for a compound which is…

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.