A certain sample of octane fuel (C8H18) was analyzed and found to contain 1.8 x 1024 hydrogen atoms. a) How many carbon atoms does the fuel sample contain? b) What is the total mass of the sample in grams?

Q: A 58.5 g sample of an unknown compound that contains only carbon, hydrogen and oxygen was analyzed…

A:

Q: 5. Analysis of 20.0 g of a compound containing only calcium and bromine indicates that 4.00 g of…

A: Given, The mass of a compound is 20.0 grams The mass of the calcium in the compound is 4.00 grams

Q: How many moles of theobromine are there in 5.72 x 1026 molecules of theobromine?

A: 1 mole of substance has Avogadro's number that is 6.022x1023 molecules or atoms NA = 6.022*1023…

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

A: Consider the given information is as follows; The formula of the unknown compound = C2Fx…

Q: How many moles of Barium phosphate Ba3(PO4)2 are present in 9.02 kg?

A:

Q: An unknown compound is processed using elemental analysis and found to contain 117.4 g of platinum,…

A: We know that,  Number of mole = given mass/molar mass Atomic mass of platinum =195.084 g

Q: why is the arrangement of the constituent atoms or molecules more important in determining the…

A: Three state of matter solid , liquid and gas. The arrangement of atoms or molecules in the lattice…

Q: Consider a sample of carbon tetrafluoride that contains 1.09 × 10²⁴ atoms of fluorine. 1.) Using…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: You wish to prepare 217 grams of 19.7 % MnCl2. You will need_________________  grams of…

A: Mass of mgcl2= 42.74gm Voulme of H2O= 80.3ml

Q: A 50.00 g sample of an organic compound containing only C, H and O is analyzed by combustion…

A: The objective of the question is to determine the empirical formula of the organic compound…

Q: a. How many molecules are present in n g of Sulphur dioxide?

A: Molecular weight of SO2 = 64 g/mol Molecular weight of any substance contains 6.023*1023 number of…

Q: A certain compound X is composed of 70.53% carbon, 13.02% hydrogen, and the remainder is nitrogen.…

A: Given values: Percentage of carbon = 70.53 % Percentage of hydrogen = 13.02 % Percentage of nitrogen…

Q: An unknown compound has the following chemical formula: P2Ox where x stands for a whole number.…

A: Given :-  chemical formula ; P2Ox  no. of moles of O = 8.4 mol  no.of moles of P = 3.34 mol  To…

Q: How many MOLECULES of water are present in 9.27 grams of this compound? A) 7.10 x 1023 molecules H,0…

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Q: Calculate the molar masses of the following molecules. Include the units. Use 4 significant figures.…

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Q: How many atoms of C are present in 52 grams of sugar C6H12O6?

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Q: A substance is 10% carbon by mass. If the total mass of substance is 25 grams, (a) what is the mass…

A: It is based on the concentration terms. Here we are required to find the mass of carbon present in…

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

A: Answer

Q: Aluminum metal reacts with oxygen to produce aluminum oxide: Balanced aluminum.jpg If a student…

A: Chemical equation:                          4Al(s) + 3O2(g) → 2Al2O3(s) molar mass of Al= 26.98…

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: The average nicotine (C10H14N2) content of a Camel cigarette is 1.93 mg. Suppose an individual…

A:

Q: 2CH3OH+3O2⟶2CO2+4H2O   Given the equation above, what is the mass of oxygen (O2) that is required…

A: The reaction given is  2 CH3OH + 3 O2 ⟶ 2 CO2 + 4 H2O

Q: Assume that the ratio of moles of Cl to moles of Cu are 2.7.  If we can represent the formula by…

A:

Q: Convert 1.61 × 1024 atoms of carbon to moles of carbon.

A: Answer:Each mole of a substance has number of particles equal to Avogadro number whose value is…

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: An unknown compound contains 53.34% rhodium, 9.338% carbon, and the rest is oxygen. a) If you assume…

A: Given a compound with the composition: Rh = 53.34 % C = 9.338 % O = 100 - (53.34 + 9.338) % = 37.322…

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: Mass of BaCl2•nH2O (g)

A: In gaseous state the BaCl2•2H2O exists with structure

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

A: given formula = Al2Clx

Q: 1. How many MOLECULES of sulfur tetrafluoride are present in 1.48 grams of this compound? molecules.

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

Q: Which of the following is a molecular compound? A) Ca2SO4 B) CaO C) NaCL D) Ca2O

A: Molecular compounds are the chemical compounds that are composed of only non- metals or semi- metals…

Q: Suppose you have a sample of sodium weighing 12.40 g. How many atoms of sodium are present in the…

A: A: 3.25 x 1023 atoms of sodium B: 21.1 g of potassium

Q: Consider a 10.1 g sample of the compound cesium phosphate. a) What is the chemical formula for…

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

Q: How many kilograms of AICI3 can be made from 150 kg of chlorine

A: The balance chemical equation for reaction of Al with with Cl2 gas is as follow…

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: Lithium carbonate, Li2CO3, contains 18.8 % lithium and is used in the treatment of mental illnesses…

A: The percent mass composition is also known as the mass percent is the mass of solute present in…

Q: The molecular formula mass of CH2O compound is 60.0 amu. What are the subscripts in the actual…

A: The objective of the question is to find the subscripts in the actual molecular formula of the…

Q: How many NH3 molecules comprise one mole of NH3? What is the mass in grams of one mole of NH3? What…

A: In one moles of NH3 is equal to Avagadro number of Molecules of NH3  That means,  1mol of NH3 =…

Q: 1.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: A sample of a compound is found to contain 21.82 g of carbon, 9.16 g of hydrogen, 20.42 g of oxygen,…

A: Mass of compound is,

Q: Blasts furnaces gives off many unpleasant and unhealth gases. If the total air pressure is 199 atm,…

A:

Q: If you mix 80.01 grams of sodium bicarbonate with 85.54 grams of hydrogen acetate how much carbon…

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Q: If 75.0 g of AlCl3 has been produced, what mass of Al has been consumed (in grams)?

A: Here we are required to find the mass of Al consumed.

Q: How do you calculate the number of grams of a molecule formed from a specific mass (g) of one of the…

A: By checking properly, the stoichiometry of the specific element whose mass is given in the compound,…

Q: Q 6. Calculate the molar mass of the following substances. (a) Ethyne, C2H2 (b) Sulphur molecule, S8

A: Molar mass of the substance can be define as the mass of one mole of a substance.

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.