3.120 A mixture of NaBr and Na2SO4 contains 29.96 percentNa by mass. Calculate the percent by mass of eachcompound in the mixture.

Q: A fertilizer is advertised as containing 14.0% nitrogen(by mass). How much nitrogen is there in…

A:

Q: Sait efflorescent A hydrated salt is 21% water (anhydrous formula weight is 136.1). a. How many…

A: Some chemical compounds on crystallization from water solution produce a crystal that contains water…

Q: 3.150 The compound 2,3-dimercaptopropanol(HSCH2CHSHCH2OH), commonly known as BritishAnti-Lewisite…

A: Given: Molecular formula of 2,3-dimercaptopropanol or BAL = HSCH2CHSHCH2OH = C3H8OS2 Molecular mass…

Q: A student heated a 3.32-g sample of a hydrate and recovered 2.02 g of an anhydrous compound. (b)…

A: Given : Mass of anhydrous MgC2O4 recovered = 2.02 g

Q: A compound contains only carbon and hydrogen and has aformula mass of 28.06 amu. What is its…

A: Given data: Molar mass of the compound = 28.06 amu

Q: How many grams of phosphorus triiodide contain 1.74 grams of I ?

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:

A: Given: Number of molecules of water = 4.0×1021 molecules   We know that,    1 mole = 6.023×1023…

Q: Which of the following has more atoms: 0.302 g ofhydrogen atoms or 14.7 g of chromium atoms?

A: If the number of moles of a substance are more, the number of atoms are also more. Number of moles…

Q: Tin(II) fluoride (SnF2) is often added to toothpaste as aningredient to prevent tooth decay. What is…

A: Given the amount of Tin(II) fluoride (SnF2) =24.6 gramwe are asked to calculate the mass of F in the…

Q: If you combine 44 g each of Na2S and FeCl2 what mass of FeS is produced?

A: Given:Mass of Na2S = 44 gMass of  FeCl2 = 44gMass of FeS produced=?The balanced chemical equation:

Q: Use ammonia (NH3) to explain what is meant by thepercent composition by mass of a compound.

A: Ammonia was used to show, what is meant by percent composition by mass of a compound has to be…

Q: 3. How many formula units (particles) of NaCl are in 4.46 moles of this compound?

A: SOLUTION  Moles of NaCl = 4.46 mol 1 mol NaCl has 6.02×1023 formula units of NaCl So ,  4.46 mol…

Q: 9.) How many moles of glucose, C6H1206 are in: (a). 538grams (b.) 1.00 grams of this substance?

A: The molar mass of a compound is furnished as the mass occupied by one mole. Hence the ratio of the…

Q: Glycine, an amino acid used by organisms to make proteins,is represented by the following molecular…

A: Glycine is the simplest amino acid present. It is made up of an amine group and one carboxylic group…

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: Consider a sample of calcium carbonate in the form of a cubemeasuring 2.005 in. on each edge. If the…

A: Given: Edge length of the cube(Calcium carbonate) =2.005 inch Density of sample= 2.71 g/cm3 To…

Q: percent by mass of sulfur in P4S10

A: The given question can be solved by using the mass percentage formula which is- Mass percent = Mass…

Q: Diamonds are a crystalline form of pure carbon, and their mass is measured in units of carats (1…

A: Given: Mass of diamond = 84.37 carat And 1 carat = 200 mg = 0.200 g…

Q: Progesterone, a female hormone, has the formula C21H30O2. In a 25.00 g sample of this compound, a.…

A:

Q: C4H10 and C6H12 are both hydrocarbons. Whic one contains higher mass percentage of carbon?

A:

Q: What is the percent by mass N in Magnesium Nitrate?

A: Atomic mass of N =  14 g mol-1 Molar mass of Magnesium Nitrate (Mg(NO3)2) = 148.3 g mol-1

Q: H Identify the element that has the highest mass percent composition in C,H120. Он Oc Identify the…

A: Applying concept of%mass of elements.

Q: 3.155 Isoflurane, shown here, is a common inhalationanesthetic. Write its molecular formula, and…

A: The given compound is,

Q: How many moles of ions are created from moles of CaCl2

A: when CaCl2 dissociate it gives one Ca+2 and 2Cl- ions. So that One mole of calcium chloride gives…

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

A: Explained as follows

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: what is the empirical formula of a compound found to contain 52.13 % carbon, 13.15 % hydrogen, and…

A: Given : Mass percent of C = 52.13 % Mass percent of H = 13.15 %  And mass percent of O = 34.72 %…

Q: A binary compound between an unknown element E and hy- drogen contains 91.27% E and 8.73% H by mass.…

A: using the molecular formula is E3H8 Given moles of E presents in compound is 3

Q: How many moles of CaCO3 are there in an antacid tablet containing 0.514  g CaCO3?  How many formula…

A:

Q: analysis shows the compound is composed only of 88.81% C and 11.19% H by mass. What is the molecular…

A:

Q: A sample of a compound containing only magnesium and oxygen is found to have 194g Mg and 256 g of O…

A: The percentage of Magnesium and oxygen are calculated as,

Q: 1. How many GRAMS of sulfur are present in 1.71 moles of sulfur tetrafluoride? 2. How many MOLES of…

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

Q: 0.933 g sample of Nickle metal is heated in the presence of nitrogne gas forming 1.081 grams of a…

A: Mass of Sample = 0.933 gMass of Nickel Nitride = 1.081 gmoles of Nickel in sample = To be determined…

Q: 6. Dopamine (C§H11NO2) is a neurotransmitter, a substance that sends signals from one nerve to…

A: The question is about to calculate the Percent composition by mass of each element in one mole of…

Q: 1.What is the percent composition by mass of aspartame (C14H18N2O5), the artificial sweetener…

A: Since you have asked multiple question ,I can solve only the first one as per our guidelines. To get…

Q: A compound containing carbon and hydrogen has a molar mass of 56.11 g/mol and an emperical formula…

A:

Q: A mothball, composed of naphthalene (C10 H8 ), has a mass of 1.50 g. Part A How many naphthalene…

A: 1 mole of any atom or molecule contains Avogadro's number of atoms or molecules. Avogadro's number =…

Q: b.How many moles of dinitrogen tetrafluoride are present in 3.16x 10^22 molecules of this compound?…

A: Number of moles= 5.45×10-2 moles

Q: A compound the formula TeCln has a formula mass of 269.41 amu. What is the value for n in the…

A: TeCln formula mass = 269.41 amu Te formula mass = 127.6 amu Cl formula mass =  35.453 amu

Q: Anabolic steroids are performance enhancement drugs whose use has been banned from most major…

A: Calculate the molar mass of fluoxymesterone (C20H29FO3),      20(12.01) + 29(1.01) + 1 (19.00) + 3…

Q: How many moles of pentane, C5H12, are contained in a 27-g sample?

A: ⊙No. of moles = massmolar mass⊙Molar mass of pentane(C5H12)=5×atomic mass    of carbon +12×atomic…

Q: ● Which of the following 100.0-g samples contains the highest percent oxygen by mass? H2O N20 C3H6O2…

A:

Q: Ammonium nitrate (NH4NO3), a common fertilizer, id 35.0% nitrogen by mass. How much ammonium nitrate…

A: We have to calculate the amount of Ammonium Nitrate.

Q: t percent nitrogen by mass?

A:

Q: 8.25 Cisplatin (right), or Platinol, is used in the treatment of certain cancers. CI- N- Calculate…

A: The molecular formula of  cisplatin or Platinol is [Pt(NH3)2Cl2]

Q: A large organic molecule has a mass of 1.41 * 10-21 kg. What is the molar mass of this compound?

A: Given that, Mass of organic molecule= 1.41×10-21 kg Molar mass is given by the following formula…

Q: Bi2S3 +3Fe=2Bi+3FeS if 5.76x10^23 formula units of BiS, react with excess iron, what mass of FeS is…

A: Given: Reaction Bi2S3 +3Fe=2Bi+3FeS no of molecules of  Bi2S3  = 5.76x1023

Q: The formula of ytterbium(III) oxide is Yb₂O₃. What is the percent by mass of oxygen in…

A: Mass percent represents the composition of an element in the given compound, which is calculated…

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.