31. How many atoms of hydrogen are in ONE molecule of (NH4)2S04? А. 4 В. С. 6. D. 1 Е. 8

Q: 6. In a chemical formula, how do you calculate the number of atoms of an element within parentheses?…

A: To find: How to calculate the number of atoms in  parentheses? Given suitable examples?

Q: Acompoundusedasanadditiveforgasolinetohelpengineblockshowsthefollowingpercentagecomposition:…

A: Empirical formula of a compound is expressed by the minimum number of ratio of atoms present in a…

Q: Convert the 5.62 × 1025 atoms of B to moles.

A:

Q: 3) Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

A:

Q: Calculate the TOTAL number of iron and oxygen atoms in 2.0 mole of iron(III)oxide.

A: Given: Formula of iron(III)oxide: Fe2O3 Moles of Fe2O3 = 2.0 mol 1 mole of any molecule contain…

Q: 16. I a) How many atoms of hydrogen are present in 2.69 moles of water? b) How many moles of oxygen…

A: a) The relation between number of atoms of any substance and number of moles of a substance is…

Q: Calculate number of O atoms in 54.7 g of SO3.

A: A mole is a collection of avagadro number of particle I.e 6.023*1023 particle  1 mole of substance…

Q: A binary compound of nickel and oxygen contains 78.06% nickel by mass. Is this a stoichiometric or a…

A: Given information: A binary compound of nickel and oxygen contains 78.06% nickel by mass. Let mass…

Q: 9.2 An unknown salt is found to contain 30,6% of water. The formula mass for anhydrous salt (AS) is…

A:

Q: 15 g N2O has how many atoms of nitrogen?

A:

Q: 12 (a) Calculate the # of moles of the alement present in 99.9 g of nickel (b) Calcolate the mass in…

A: Given a) Mass of Ni             = 99.9 g b) No.of moles of Ni = 0.251 mol c) No.of moles of Ni  =…

Q: 1b. The compound NaHCO, is commonly known as baking soda. A recipe requires 1.6g of baking soda,…

A:

Q: 8.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Assuming the molecular formula of compound is CaHbOc  And since moles = mass / molar mass Hence…

Q: A theoretical molecule exists as a hydrate (has non-covalently bound waters of hydration) with a…

A:

Q: Calculate the number of moles in sample. 25.2 kg C2H2

A: Mass of C2H2 in sample  25.2 kg Then molar mass of C2H2 is calculated Then by using mass and molar…

Q: Tin has 10 stableisotopes. The heaviest, 124Sn, makes up 5.80% of naturally occurring tin atoms. How…

A: Given that,  124Sn isotope makes up 5.80% of naturally occuring tin atoms  Mass of tin sample = 57.0…

Q: How many molecules of trilaurin are present in 3.5 moles of trilaurin?

A: Given: Moles of trilaurin = 3.5 mol

Q: At 136°C and atmospheric pressure, the density of this gaseous chloride is5.6 g L-1. Under the same…

A: The temperature in Kelvin is calculated as shown below.

Q: Why is the mass of a mole of carbon atoms 12 times that of a mole of hydrogen atoms?

A: The solution is as follows:

Q: ted, how many O A. 623.7 g O B. 415.8 g OC. 2495 g O D. 138.6 g O E. 104.0 g

A: The question is based on Reaction Stoichiometry. We have to calculate Amount of potassium…

Q: calculate the number of atoms of F in 32.5g of flourine gas, F2

A: Since moles of F2 = mass of F2 / molar mass of F2  molar mass of F2  = 38 g/mol Hence moles of F2  =…

Q: 19) Which of the following elements has the greatest electronegatively? A) Carbon B) Hydrogen Охуgen…

A: 24) Since Avogadro's number is defined as the number of particles in 1 mole of substance  hence the…

Q: 16 How many moles of oxygen atoms are in 7.58 moles of V(SO4)3?

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

Q: Calculate the number of moles of helium that contains 2.79×1021 atoms.

A: Given,Number of helium atoms = 2.79 × 1021

Q: 2.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Given that the mass of CO2 and H2O formed by the burning of 2.50 g of compound X is 3.44 g and 0.94…

Q: Starting with 9.20 mol of 02 , how many mol of H2S will you need ? and how many mol of S02 will you…

A: Moles of O2 = 9.20 mol  Moles of H2S = ?  Moles of SO2 = ?

Q: When aluminum metal is heated with an unknown element from group 6A (O, S, Se, Te) an ionic compound…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Suppose you have 2.50×1018 reamsreams of lead (PbPb). How many lead atoms do you have

A: The number of Lead atoms can be calculated as, 1 ream= 500

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

A: Given data:

Q: 3) кон + Н,РО, > _K3PO4 + H20 21.44 mols of H3PO, makes how many mols of KgPO,?

A: Given Number of mole of H3PO4  =   21.44 mole  Number of mole of K3PO4   =  ?

Q: One mole of H20 contains a total of 6.022 × 1023 atoms. True False Previous Page Next Page

A: Given statement is, 1 mole of H2O contains a total of 6.022×10^23 atoms

Q: 51. Ascorbic acid, or vitamin C (C,H,O), is an essential vitamin. It cannot be stored by the body…

A: Ascorbic acid is C6H8O6 Molar mass of C = 12 g/mol Molar mass of H = 1 g/mol Molar mass of O = 16…

Q: Determine the number of moles in 5.57 × 10²³ formula units of BaBr₂.

A: in one avegadro number is equal to 6.022 × 1023 formula unit.

Q: If Avogadro's no. is taken as 'N' then 2 moles of H20 will have how many atoms of H?

A:

Q: Important values if needed for ti A compound is found to contain 3.622 % carbon and 96.38 % bromine…

A: Percentage of ‘C’ = 3.622 % Percentage of ‘Br’ = 96.38 % Molar mass of ‘C’ = 12.0107 g/mol Molar…

Q: how many atoms are 4.52 moles of carbon

A:

Q: B. Calculating Average Molecular Mass 1. Glucose- C6H12O6 2. Tetrasulfur dinitride- S«N2 3. Diboron…

A: Average molecular mass can be calculated as follows

Q: w many moles of calcium atoms do you 1021

A: Given, No. of atoms = 6.22×1021 atms To calculate the number of moles of calcium.

Q: Part 3 28.4 mL of 0.403 M (NH4)2CO3 mol NH4*: O 11.4 0.0228 O 11400 O 0.0114

A:

Q: The number of moles of water in a hydrated compound is calculated to be 0.04 moles. After heating…

A: Moles of water in hydrated form= 0.04 moles Moles of anhydrous( without hydration)= 0.005 moles

Q: 7.) How many molecules of H, are present in 7.5 grams of H,?

A: Since there are multiple questions, I am only solving the first one. If you want the other question…

Q: Which are monatomic ions? 10. a. Thiosulfate 11. a. Chlorate 12. a. Iron (III) 13. a. Iodide C.…

A: Polyatomic ions are the ions which contain more than one atom Monoatomic ions are the ions which…

Q: 19 How many nitrogen atoms are present in 25.00 g of N,O,?

A:

Q: A sample of hydrate of copper(II) sulfate is found to contin 36.08% by mass water. What is the…

A: Molar mass of copper sulfate = 159.6 g/mol Molar mass of water molecule = 18 g/mol Molar mass of…

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: 16) Determine the number of atoms in 48.3 g sample of zine (65.38g Zn= Imole Zn

A:

Q: Question attached

A: 1 Mole of Antimony contains number of atoms equal to Avogadro's number, i.e., 6.023*1023.

Q: Answer the following questions: a) How much As (74.9216 g/mol) is in the sample? b) Calculate %…

A: Mass of As in the sample can be calculated by considering the amount of AgNO3 used to precipitate…

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.