How many atoms or ions of each element are in 164.5 g of the following substances?   (a) H2       ×  1025 H atoms   (b) Ca(NO3)2       ×  1023 Ca2+ ions       ×  1024 NO3− ions   (c) N2O2       ×  1024 N atoms       ×  1024 O atoms

Q: The illustration to the left represents a mixture of phosphorus ( orange ) and fluorine ( green )…

A: Since your question has multiple parts, we will answer first question for you. If you want residual…

Q: 64 g of Na2SO4 • xH2O were heated to yield 2.84 g of Na2SO4 What is the value of x?

A: NOTE : I think it is 6.4 g because 64 g of Na2SO4•xH2O will yield much more than 2.84 g of Na2SO4…

Q: 3. In a chemical atomic mass determination, the tin content of 3.7692 g of SnCl, was found to be…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over‑the‑counter…

A: Given, Mass of diphenhydramine hydrochloride = 50.0mg. Moles of diphenhydramine hydrochloride can be…

Q: a sample of pure alumina hydrate was obtained from a bag of flame retardant. A 5.000g sample of the…

A: Given, Mass of sample = 5.000g. Final weight of sample after heating = 2.651g. The mass of water in…

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A:

Q: How many grams of CH3CO2C5H11 must be weighed out to provide 3.22 x 1023 atoms of H? When you input…

A: Mole in terms of particles : 1 mol = 6.022 x1023 particles  where particles =…

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

A:

Q: 5. Oxides of sulfur are common air pollutants. If a compound is found to be 50% oxygen empirical and…

A: Calculation of empirical formula:

Q: The molecular formula for benzene is C6H6. What is its empirical formula?

A: We have to predict the empirical formula of benzene.

Q: g figs 6. How many moles of calcium chloride are in 2.25 x 10 molecules of calcium chloride?

A:

Q: How many atoms in total are there in one molecule of Mg(NO3)2?

A: In a molecular formula, symbols of all the constituting atoms are shown along with their numbers in…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 41.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: A compound with the rather imposing name 2,2'-azo-bis-isobutyrylnitrile is used to initiate the…

A: Given : molecular formula of compound is = C8H12N4. To find : type of atom and number of atoms and…

Q: A metal M forms a compound with the formula MCl4. If the compound is 66.14% chlorine by weight, what…

A: The molecular formula of metal chloride is = MCl4 The mass percentage of chlorine is = 66.14 %

Q: A chloride of silicon contains 79.1 mass % Cl. (a) What is theempirical formula of the chloride? (b)…

A: Empirical formula It gives the simplest whole number ratio of elements present in a compound. It is…

Q: A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many K+…

A: Applying concept of avogadro number. 1 mole = 6.022× 1023 atom/ molecules/ ions

Q: The molar mass of nicotine C10H14NX is 162 g/mol. What is the value of x?

A: Given that, Molar mass of nicotine C10H14Nx is                162 g mol-1.  Value of x = ?

Q: A patient is having an allergic reaction and takes a 12.5mg tablet of the over‑the‑counter…

A: The mass of the tablet is = 12.5 mg = 12.5 x 10-3 g The molecular formula of diphenhydramine…

Q: Calculate the Molar mass of the following: 1. C14H29NO4S ( Penicillin – an antibiotic)     2.…

A: The molar mass or molecular weight of any compound is the sum of the mass of each element present in…

Q: A particular oral contraceptive contains 0.044 mg of ethinyl estradiol in each pill. The formula of…

A: Number of moles = given mass / molecular mass

Q: On combustion analysis, a 0.450 g sample of a chemical compound gves 0418 water and 1.023 g of…

A:

Q: Calculate the number of particles in each of the following. Part A. 0.146 mol carbon atoms, C.…

A:

Q: How many oxygen atoms are in 32 molecules of dinitrogen tetroxide, N₂O₄?

A: The molecular formula of the compound given is N2O4.

Q: 2) What is the mass of 5.13 moles of Na2Cr2O7?

A: Solution First, we need to find out the molar mass of Na2Cr2O7 The molar mass of = (Number of atoms…

Q: C2H2O is the empirical formula for Ethanone. Asprin has the formula C9H8O4 how do I get this answer?

A:

Q: A certain metal oxide has the formula MO, where M denotes the metal. A 39.46-g sample of the…

A: Given the mass of sample = 39.46g Mass of metal left after heating = 31.70g The atomic mass of metal…

Q: One of the hydrates of MnSO4 is manganese(II) sulfate dihydrate . A 69.7 gram sample of MnSO4  2…

A:

Q: c) For erythrosine, a food coloring, C20H6L4N22O5, how many hydrogen atoms would be present in the…

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: a compund with the formula MNO3 contains 28.3% oxygen by mass. What is the identity of element M?

A: Mass percentage is defined as the ratio of mass of the substance ( here element) to the total mass…

Q: The nonprescription pain relievers Advil and Nuprin contain ibuprofen 1C13H18O22, whose molecular…

A: Given, Molar Mass of Ibuprofen(C13H18O22) = 206.3 g/mol                                Number of…

Q: Hi, I am working on a homeowrk problem and I can't figure out how to approach it.  How would I go…

A: Molecular formula of the compound suggests that every molecule of CO2 contains 2 O atoms. Hence,…

Q: Which one of the following molecular formulas is also an empirical formula? O C6H602 O C2H6SO O H202…

A: The simplest positive integer ratio of the atoms present in the chemical compound is known as…

Q: A patient is having an allergic reaction and takes a 50.050.0 mg tablet of the over‑the‑counter…

A: Given : Mass of C17H22ClNO = 50.0 mg = 0.050 g                                                (Since…

Q: Batrachotoxin, C31H42N2O6, an active component of South American arrow poison, is so toxic that 0.05…

A: Given data : Mass of Batrachotoxin(C31H42N2O6) = 0.05 mg = 0.5 x 10-4 g Molar mass of Batrachotoxin…

Q: The molecular formula of aspartame, the artificial sweetenermarketed as NutraSweet®, is C14H18N2O5.…

A: Aspartame is an artificial sweetener that is 200 times sweeter than the sucrose is marketed as…

Q: How many of the indicated atoms are represented by eachchemical formula: (a) carbon atoms in…

A: The number of indicated atoms present in each chemical formula are:

Q: An organic compound was found to contain 54.5% C, 9.2% H, and 36.3% O.  a. What is the empirical…

A: Percentage of carbon = 54.5 %          Percentage of H =   9.2 % Percentage of oxygen = 36.3 % Mole…

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

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

Q: The compound XCl4 contains 75.0% Cl by mass. What is theelement X?

A: The empirical formula of the compound is XCl4 and the mass percentage of chlorine is given as 75 % .…

Q: One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows…

A: Given: 26.3% Mg, 20.2% Si, 1.45% H   Let mass of compound be 100 g. then it contain 26.3 g of Mg,…

Q: When 7.003 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 20.50 grams…

A: The empirical formula of a molecule is represented by the atomic symbol of the constituting elements…

Q: Chlorophyll with the cher below is a pigment in pla responsible for the green leaves. What is the…

A: Given: Atomic masses, C = 12, H = 1, Mg =24, N = 14, O = 16             Calculated Molar mass of…

Q: Boron trifluoride is used as a catalyst in the synthesis of or-ganic compounds. When this compound…

A: When the compound involves boron-11 and fluorine-19 isotope, the molecular mass of the compound 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.