A tube of Thothpaste contains 0.76 g of sodium monofluorphosphate (Na2PO3F) in 100 mL. a)what mass of fluorine atoms in mg was present. b)how many fluorine atoms were present?

Q: A.How many moles of boron trichloride are present in 1.03 x 10^23 molecules of this compound? B.How…

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

Q: How many hydrogen atoms are in 790.58 grams of propane?

A: The moles of a substance is the mass of the substance which has equal quantity of basic units. The…

Q: What kind of chemical formula can be obtained from experimental data showing the relative masses of…

A: The formula obtained is:

Q: How many grams of silicon are present in 2.78 moles of silicon dioxide?

A: Recall the data, moles of SiO2=2.78 moles mass of Si=?

Q: Your doctor has diagnosed you as being anemic-that is, as having too little iron in your blood. At…

A:

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: Which kind of chemical formula can be obtained from experimental data showing the relative masses of…

A:

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL.(a) What mass…

A:

Q: How many Atoms are there in 6CO2

A: We know that atoms are the smallest unit of matter.

Q: How many atoms of vanadium are in 1.28 grams of vanadium ?

A: 1 mole of vanadium contains Avogadro’s number of atoms. The number of mole of 1.28 g of vanadium…

Q: How many hydrogen atoms are in one molecule of vitamin E?

A:

Q: 2. How many H atoms are in 72.5 g of isopropanol (rubbing alcohol), C3H8O?

A:

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL. 1. What mass…

A: Given : Mass of sodium monofluorophosphate i.e Na2PO3F = 0.76 g

Q: What is the mass of the compound C8H18 (Mm = 114.26 g.mol-1) that contains 7.20x1022 hydrogen atoms?

A: Given :- molar mass of C8H18 = 114.26 g.mol-1  Number of H atoms = 7.20 × 1022 atoms   To calculate…

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate (Na2PO3F) in 100 mL.  What is the…

A: Given : Mass of sodium monofluorophosphate i.e Na2PO3F = 0.76 g

Q: The composition of sorbic acid is 64.3% C, 7.2% H and 28.5% O. Since its molecular mass is 112 alb,…

A: Given : Mass % : C=64.3% H=7.2% O= 28.5%

Q: The chemical formula for calcium bicarbonate is: Ca(HCO,), Са How many carbon atoms are in each…

A:

Q: What is the mass in 3.52 x 10^23 water molecules?

A: mass of 3.53 ×1023 molecules is 10.45g

Q: A sample of Fe(H2PO4)3 that contains 12 000 oxygen atoms must also contain how many phosphorus…

A: Given Number of oxygen atoms = 12000 To find number of phosphorus atoms

Q: What is the mass percent of chlorine in sodium chloride?

A: Mass of one mole of chlorine=35.43 Mass of one mol sodium chloride (NaCl)=58.44 g The mass…

Q: How many carbon atoms are contained within 10.0 pounds of sugar, (sucrose) which has the formula…

A:

Q: a) How many calcium ions are there in 2.81 mol Ca3N2? b) How many nitride ions are there in 2.81…

A: A. We have to calculate the number of Ca+2 ions. B. We have to calculate the number of N3- ions.

Q: Rubudium have two isotopes, 85Rb has mass 84.9117 amu and 87Rb has mass 86.905 amu. If the average…

A: The naturally occurring Rubidium  has two isotopes, therefore both of them are present in Rubidium…

Q: If 2.00 grams of Epsom salts are allowed to dehydrate in a warm oven overnight, the mass of the…

A: Mass percent of water in Epsom salt = 100 x Mass of water/Mass of Epsom salt Mass of Epsom salt =…

Q: hat is the mass percent of hydrogen in decaborane, B10H14?

A: Percent composition is defined as the ratio of  mass of single  element in one mole  to the mass of…

Q: The chemical formula for the amino acid glycine is CHŞNO2. Which of the following statements about…

A: Which of the statement is false ?

Q: How many grams of K2C2O4, potassium oxalate, would containe 182 grams of pure potassium?

A: The molar mass of potassium oxalate can be calculated as:

Q: How many atoms are specified by each of these prefixes: mono-, di-, tri-, tetra-, penta-, hexa-?

A: All chemical compounds can be named with certain rules which are purposed by IUPAC. It purposed to…

Q: The active ingredient in a Tylenol pill is 325 mg of acetaminophen (C8H9NO2) . Find the number of…

A: Since molar mass of acetaminophen = Atomic mass of C X 8 + Atomic mass of H X 9 + Atomic mass of N X…

Q: 11. How many oxygen atoms are there in one formula unit of Ca2*?

A: 1. Formula unit is used to indicate lowest reduced ratio of ions in the compound  2. Molarity :…

Q: What is the mass of a sodium nitride sample,NA3N, which contains 9.76*1012 atoms of sodium?

A: Given that the number of atoms of sodium in sodium nitride is 9.76*1012 atoms. Using the…

Q: How many atoms are present in a Mg sample with a mass of 14.6 grams?

A:

Q: How many atoms are there in 89 molecules of acetic acid?

A: The chemical formula of acetic acid is CH3COOH.

Q: A tube of toothpaste contains 0.76 g of sodium monofluorophosphate, Na2PO3F, in 100 mL. How…

A: Molecular weight of sodium monofluorophosphate, Na2PO3F = 143.95 gm/mol  Moles = weight/mol. wt. =…

Q: 2. How many ions of metal are in 5 molecules of NasPO4? How many atoms of metal?

A: Metals: Elements which can donate electrons easily are called as metals. Metals are good conductor…

Q: For erythrosine, a food colornig, C20H6I4Na2O5, how many hydrogen atoms would be present in the 86.0…

A: The relation between moles, mass and molar mass can be written as:

Q: 3- How many kinds of hydrogen atoms are there in the following molecules?

A: In the carbon compound the different kinds of hydrogen atoms depends on the type of carbon atoms.…

Q: A.How many grams of calcium carbonate,CaCO3,are present in 2.06 moles of this compound? B.How many…

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

Q: The number of nonmetallic atoms in Al2 (SO3 )3 is?

A: The given compound is Al2(SO3)3. In periodic table right end elements are non metals and left end…

Q: The chemical formula for calcium bicarbonate is: Ca(HCO,), How many carbon atoms are in each formula…

A: Chemical formula represents each compound with a symbol for each element present in it followed by a…

Q: d. Determine the % of ammonium ions(NH4*) in ammonium phosphate, (NH4)3PO4. e. How many ammonium…

A: Given  mass of ammonium phosphate = 74.5 g

Q: A sample of C3H8 has 8.00×10^24 H atoms. How many carbon atoms does the sample contain?  What is…

A: Given :- number of H atoms = 8.00 × 1024 atoms  To be calculated :-  No. of C atoms in sample…

Q: For what type of compound are we unable to write a molecu-lar formula?

A: The representation of actual number of atoms found in a molecule of a substance are referred as…

Q: Hydrogen peroxide (H2O2) is a mild antiseptic used to prevent infection in minor cuts and scrapes.…

A:

Q: How many moles would 1.00 x 103 molecules of methane ( 1. CH4) represent?

A: Avogadro number (NA) 1 mole of a substance contains 6.02×1023 molecules 1 mole of O2 contains…

Q: g) How many grams of K2C2O4, potassium oxalate, would contain 182 grams of pure potassium?

A: One mole of K2C2O4 has two moles of potassium.   The molar mass of K2C2O4 is 166.22 g/mol   And…

Q: 2. How many moles would there be in 500 atoms of Silver? - 3. What is the mass of exactly 230 Sodium…

A:

Q: 2. How many ions of metal are in 5 molecules of Na;PO4? How many atoms of metal?

A: Answer:- This question is answered by using the simple concept of calculation of number of atoms in…

Q: How many hydrogen atoms are in 164.18 grams of hexane?

A: Molar mass of hexane (C6H14) = 12 x 6 + 14 = 86 g Number of moles of C6H14 = 164.18/86 = 1.91 moles

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.