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: 3. A student carried out the synthesis of aspirin as described using 3.00 g of salicylic acid and…

A: #3: Mass of salicylic acid (MW = 138.12 g/mol) used = 3.00 g  Volume of acetic anhydride used, V =…

Q: a) Assuming that the coal was 81.5 % carbon by mass and that combustion was complete, calculate the…

A: Given: Part a) Amount of Carbon =81.5 % Part b) Amount of Sulfur = 4.40% Total amount of coal in an…

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution…

A: Given reaction is

Q: When 5.942 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 19.34 grams…

A: When organic compounds undergo combustion, they produce carbon dioxide and water. Chemical reactions…

Q: A compound consists of 20.3 grams of Carbon, 5.12 grams of Hydrogen, and 7.9 grams of Nitrogen. (a)…

A:

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: a) Determine molecules of C5H5N in 16.00 g of C5H5N (molar mass = 79.11g/mol). b) Explain how the…

A: a) Given : Mass of C5H5N = 16.00 g And molar mass of C5H5N = 79.11 g/mol.

Q: An organic compound used as a food additive in beverages and baking powders, is composed of 41.39%…

A: Given  % C  = 41.39 % H = 3.47  % O = 100 -( 41.39 + 3.47 ) %         = 55.14 %  Empirical Formula =…

Q: A 52-kg woman has 7.2 x 10-3 mol of hemoglobin (molar mass = 64456 g/mol) in her blood. How many…

A: Given no.of mol of hemoglobin = 7.2×10-3 mol.we know that no. of molecules = mole×Avogadro…

Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: Caffeine has the formula C8H10N4O2 . If an average cup of coffee contains approximately 125 mg of…

A: In the international system of units the mole (symbol: mol) is the quantity unit for measurement…

Q: When 4.464 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 14.01 grams…

A:

Q: A newly discovered metalloprotein, which contains four atoms of Mo per molecule of protein, is found…

A: The given values in the question are:Number of Molybdenum (Mo) atoms per molecule of protein = 4Mass…

Q: A lawn fertilizer is rated as 7.55% nitrogen, meaning 7.55 g of N in 100 g of fertilizer. The…

A: Given, A lawn fertilizer is rated as 7.55% nitrogen, meaning 7.55 g of N in 100 g of fertilizer. The…

Q: (a) What is the difference between adding subscript 2 to the end of the formula for CO to give CO2…

A: From given  Subdivision a) is solved with the relation of CO2 and CO when coefficient is added in…

Q: Write the balanced equation for the photosynthesis reaction in which gaseous carbon dioxide and…

A: A chemical reaction is symbolic representation of the conversion of substances to new substances. In…

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: Read each of the following statements very carefully. Then decide if the statement is CORRECT or…

A: (a) This statement is correct.   Fires are often high-stress situations, and some people will…

Q: A certain protein was found to contain 0.531% iron by mass. Determine the minimum molecular mass of…

A:

Q: For the element aluminum, Al: (a) Calculate the number of moles in 7.54 g. (b) Calculate the number…

A: Data given: (a) The mass of aluminium = 7.54 g (b) The number of moles of aluminium = 0.154 mol (c)…

Q: What is the mass in grams of 5.0 * 1020 molecules of aspirin 1C9H8O42? (Hint: Using Avogadro’s…

A: Given, Number of molecules = 5.0*1020 Molar mass of C9H8O4 = 9×12 + 1×8 + 16×4 = 180g/mol Avogadro's…

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: (3)Galactose is found in milk sugar and is used for diagnosing liver function. What is the molecular…

A: Given, Empirical formula of Galactose = CH₂O Molar mass of Galactose = 180 g/mole We need to…

Q: The sample is analyzed and found to contain three elements, C, H and O.  A 2.147 g sample of the…

A: The given data: The mass of the sample = 2.147 g The mass of the CO2 (g) = 4.297 g The mass of H2O…

Q: Answer true or false. (b) Avogadro’s number, to three significant figures, is 6.02 x 1023 formula…

A: Given statements -  (b) Avogadro’s number, to three significant figures, is 6.02 x 1023 formula…

Q: 0.33 mol Ca3(PO4)2 contains mol phosphate ions.

A:

Q: TCDD, also called dioxin (C 12H 4Cl 4O 2, molar mass 322.0 g/mol), is a potent poison. The average…

A: The dose of TCDD which is lethal for a individual can be calculated by multiplying the mass of the…

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.