For the amino acid cysteine (C3H7NO2S), calculate: (a)How many moles are in 5.0 g of cysteine? b)The number of oxygen atoms in 2.83 moles of cysteine.

Q: number of moles of (c)  acetate ions, CH3COO-, in 0.43 mol of Ca(CH3COO)2.

A: 2) In 1 mol of Ca(CH3COO)2 has 2 moles of  CH3COO- ion.

Q: Methyl tertiary butyl ether, or MTBE, is currently used as an octane booster in gasoline. It has…

A: The question  is based on the concept of mass percentage. mass percentage is defined as the  mass of…

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: 3.113 An iron bar weighed 664 g. After the bar had been standing in moist air for a month, exactly…

A: The final mass of the iron bar and rust has to be given, The mass of iron after one-eighth of the…

Q: Our bodies synthesize protein from amino acids. One of these amino acids is glycine, which has the…

A: First calculate the molecular mass of the compound from given molecular formula.

Q: How many atoms of oxygen are in 10.20 mol of tetrathionate (S4O62-)ion?

A: We have determine how many oxygen atoms are present in 10.20mol of tetrathionate.   Calculation is…

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: What is the mass of lime, CaO, can be obtained by heating 125 kg of limestone that is 95% by mass…

A: Given, mass of limestone = 125 kg            mass percent of CaCO3 in limestone = 95% Now, moles of…

Q: Explain the problem with the following statement and correct it. “When a chemical equation is…

A: The given statement is to be corrected by explaining the error with it. The given statement is:…

Q: Given 41.5g of gold, Au, how many moles do you have? Round to 2 decimal places.

A: According to the mole concept, one mole of the Substance related to different values as - (1) 1 mole…

Q: Hydroxylamine, NH2OH, is a reducing agent found in some film developing solutions. How many hydrogen…

A:

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

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

Q: A sample of the male sex hormone testosterone, C19H28O2,contains 3.88 * 1021 hydrogen atoms. (a) How…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: 1. Determine the molar mass of (a) potassium hexachloroiridate(IV), K2lrCls and (b) trifluorosilane,…

A: Determine the molar mass of the given complex--

Q: What is the mass, in g, of one molecule of ethane, C2H6?

A: One mole of substance has Avogadro number of atoms. 1 mole of substance=6.022×1023 molecules. Number…

Q: Q3. Calculate the percentage composition of Amino glutamic acid with molecular formula C3H,NO4

A:

Q: calculate the number of H atoms in 0.350 mole of glucose?

A: One mole of glucose = 6.023 × 1023 atoms.0.350 mole of glucose = 0.350 × 6.023 × 1023 atoms = 2.10 ×…

Q: How many grams of diazine (N2H2) are there in 2.01 mol of the compound? ______________________ g

A: The molar mass of diazine is:

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

A:

Q: Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging…

A: Number of moles of any substance can be calculated by dividing mass of that substance with its molar…

Q: When iridium-192 is used to treat cancer, a small cylindrical piece of 192Ir, a 0.6 mm in diameter…

A: Given,

Q: Use percent composition and molar mass to determine molecular formula. Analysis of a compound of…

A: Given : We have to calculate the molecular formula of the compound.

Q: How many oxygen atoms are in 19 molecules of tetraphoshorus decoxide (aslo known as phosphorus…

A: Given, molecular formula of phosphorus pentaoxide P4O10 , we are asked to determine total number of…

Q: Calculate the number of grams in 0.348 mol of galactose, C6H12O6

A: Given, The number of moles of galactose is 0.348 mol. The molar mass of galactose is 180.156 g/mol

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. What is the mole ratio between BaSO4 and Fe,(SO3? b. How many moles of BaSO, can come from 0.557…

A: The ratio between the amounts in moles of any of the two compounds involved in a chemical reaction…

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: An unknown compound containing tellurium and bromine is analyzed and it is determined that 28.53% of…

A: According to given data%mass of Tellurium in compound=28.53 %and% mass of Bromine in compound=71.47…

Q: How many atoms of silicon are in 0.75 mol of disilicon hexahydride, Si2H6?

A: Moles of Si2H6 = 0.75 mol No. of atoms of Si in Si2H6 = ?

Q: In the molecule C6H12O6 are there will be 12 moles of hydrogen per mole of glucose?

A: The molecular formula of glucose = C6H12O6 It is obvious as seems from the molecular…

Q: Oxygen makes up 46.7% by mass of the earth's crust. How any grams of oxygen are present if a sample…

A:

Q: Nicotine, a component of tobacco, is composed of C, H and N. A 5.20-mg sample of nicotine was…

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: A common name for galactose is cerebrose, or brain sugar. What is the molecular formula of galactose…

A:

Q: The molecular formula for glucos is  C6H12O6 and BENZENE HAVE C6H6. What are their respective…

A: The empirical formula of a compound is called the simplest formula. It represents the relative or…

Q: 1. A prospector panning for gold in a river collects 15.00 g of pure gold. How many Au atoms are in…

A: According to mole concept, 1. 1 mole of a substance = molar mass of the substance.Eg- 1 mole ammonia…

Q: What is the mass in milligram of a. 0.888 mol of H,SO,?

A: Given :-  Number of moles of H2SO4 = 0.888 mol   To calculate:-  Mass of H2SO4  Mass = number of…

Q: (a) The molecular formula of acetylsalicylic acid (aspirin),one of the most common pain relievers,…

A: a) Since the molar mass of aspirin = Atomic mass of C X 9 + Atomic mass of H X 8 + Atomic mass of O…

Q: What is the simplest or empirical formula of a compound which is found to have a mole ratio    of…

A: Given;

Q: Calculate the number of moles of O atoms in 18.1 mol of formaldehyde, CH2O

A: Answer 18.1 moles of oxygen atoms are in 18.1 moles of formaldehyde, CH2O.

Q: (C12H,Cl402, molar mass 322.0 g/mol), is a potent poison. The average lethal dose in humans is…

A:

Q: Beryllium is a light metal used to fabricate transparent X-ray windows for medical imaging…

A: Moles is defined as the measurement of a substance that contains 6.022×1023 number of particles…

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: The percent by mass of nitrogen for a compound is found to be 30.5%, Which of the following could be…

A:

Q: The molecule Al(OH), has Al atom(s), O atom(s) and v H atom(s). Therefor, the molar mass of Al(OH),…

A: Molar mass is the mass of a chemical element divided by the amount of substance (mol). It can be…

Q: 1.) The average cup of coffee contains about 125 mg of caffeine, C8H10N4O2. a.) How many moles of…

A: The given data: The mass of Caffeine = 125 mg. To determine = a.) The number of moles of caffeine…

Q: Quinine (C20H24N2O2 ) is an anti-malaria drug. If a person had 0.0654 moles of quinine, how many…

A:

Q: Calculate the molar mass (g/mol) of the compound, C6H8O6 (vitamin C).

A: Molar mass of carbon is 12g/mol  Molar mass of hydrogen = 1g/mol  Molar mass of Oxygen = 16g/mol

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.