Folic Acid (C19 H19 N7 O6), also known as vitamin B9 is used to treat anemia caused by folic acid deficiency. Folic acid is also used as a supplement by women during pregnancy to reduce the risk of neural tube defects (NTDs) in the baby. The molar mass of a folic acid 441.4g/mol.a.) How many moles of vitamin B9 are present in 25 mg of sample?b.) How many oxygen atoms are there in 0.25 mol of vitamin B9?c.) What is the mass percent of carbon in vitamin B9? (up to 3 sig. figures)

Q: Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the…

A: The atomic masses areC: 12.011 uH: 1.008 uN: 14.007 uO: 15.999 uThe gram molar masses are

Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

A:

Q: 8 Calculate the number of moles, and molecules in: a) 10 g water b) 10 g ethanol C,H,0 c) 10 g of…

A: Molar mass of water : 18gmol-1  (I) number of moles = ( mass / molar mass of water )  number of…

Q: A healthly person breathes out approximately 0.020 L of carbon dioxide in one breath. How many moles…

A: The number of moles is a fundamental physical quantity that is denoted by the amount of a substance…

Q: 1. The most abundant form of carbon has an atomic mass number A = 12, and a molar mass of 12 g/mol.…

A: We have to calculate the moles of carbon.

Q: Cortisol (μ=362.47 g/mol), one of the major steroid hor-mones, is a key factor in the synthesis of…

A: The number of carbon atom, (nC), is calculated as shown below where 69.6 % is the percentage…

Q: Freon™, CCl,F2(g), is a refrigerant that is no longer used in car air conditioners because it…

A: One mole of a compound will contain Avogadro number of particles ( atom, molecule etc.) of that…

Q: A binary covalent compound contains 78.3% baron and the rest is hydrogen. Its molar mass is…

A: We have  Percentage of Boron (B)=78.3% Percentage of Hydrogen (H)=100-78.3=21.7% Atomic mass of…

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

A: Number of moles = mass/molar mass given mass of Be = 3.24g molar mass of Be = 9.01g/mol Number of…

Q: Given: Avogadro's number=6.022 E23 Convert 7.5 moles of Compound G (molar mass 140.0 g/mol), using…

A:

Q: moles

A:

Q: You have 275 g. of CCl3F How many moles is this?

A: The name of the given compound is trichlorofluoromethane with molecular formula CCl3F. Given that,…

Q: For the chemical reaction 2KI+Pb(NO3)2---->PbI2+2KNO3 how many moles of lead (ii) iodide (PbI2)…

A: Given, 2.0 mol of potassium iodide (KI)

Q: nitric oxide is made from the oxidation of ammonia. What mass of nitric oxide can be made from the…

A: Mole is calculated by division of taken mass of substance by molar mass of substance.

Q: Aspartame is an artificial sweetener that is160 times sweeter than sucrose(table sugar) when…

A: The answer to the following question can be given as -

Q: (a) What is the chemical formula of eugenol, the main contri butor to the aroma of cloves? (b)…

A: a) We have to find chemical formula of eugenol, the main contributor to the aroma of cloves.…

Q: From the previous question convert 159.8 of Br2 to moles of Br2 O 1 mole of Br2 O 3 moles of Br2 O 2…

A: Molar mass of Br2 = 159.8 g/mol Moles of Br2 = mass of Br2 in g / Molar mass of Br2 in g/molGiven…

Q: The following may be needed: 1 mol=6.022x1023. 1) Calculate the molecular mass and molar mass of…

A: 1.

Q: Pls provide clear solution on B & C 1. The Freons are a class of compounds containing carbon,…

A: Molar mass of CH2FCF3=102.03g/mol In this molecule, C----> 2,H---->2,F--->4 Atomic mass of…

Q: 2C2H2(g)+5O2(g)⟶Δ4CO2(g)+2H2O(g) How many moles of C2H2 are required to produce 0.63 mol of H2O?

A: Given reaction :-   2C2H2(g) + 5O2(g) ⟶ 4CO2(g) + 2H2O(g) reaction is balanced.

Q: Glucose (C6H12O6) is the main product in photosynthesis, how many moles are there in 3.12 x 1023…

A: Given data:  Number of molecules = 3.13 × 1023  To calculate : Number of mole

Q: The active ingredient in many antacid tablets is calcium carbonate, CaCO3. How many moles of calcium…

A: The molar mass of calcium carbonate is 100.1 g/mol.

Q: How many grams of water (H2O) are produced if 10.0 moles of C4H10 are used?

A:

Q: In 360 grams of Glucose(CGH1206) the number of moles of Glucose present is O 1 O 4 O 3 O 2

A: * Number of moles of substance = Mass of substance/molar mass of substance By using this we can…

Q: Copper(I) iodide (CuI) is often added to table salt as a dietary source of iodine. How many moles of…

A: The mixture containing 0.0100% CuI by mass indicates the 0.0100g of CuI is added to 99.9g of table…

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: Assume vit K1 makes up 0.052% ( by mass) of cilantro. How many moles of vit K1 is there in your…

A: Vit K1 makes up 0.052% (by mass) of cilantro. 1 tsp of cilantro is used here and volume of 1 tsp is…

Q: How many moles of water is 6.36 x 1022 molecules? No.of representative particles No. of moles = 6.02…

A: Given  Molecules of water = 6.36 x 1022 molecules

Q: If you have 3.0 grams of NaHCO3, how many moles of HCl are needed for a complete relation?

A:

Q: How many moles are present in 35.6g of H2SO4?

A: Given the mass of H2SO4 = 35.6 g The molecular mass of H2SO4 = 98 g/mol

Q: . Lycopene (C40H56) is an antioxidant molecule that is thought to slow aging and reduce the risk of…

A: Given that Lycopene is C40H56 an antioxidant. Minimum daily intake = 6.5 mg = 0.0065 gram

Q: Starting with, 1.5052g of BaCI2 2H20 and excess H2SO4, how many grams of BaSO4 can be formed?

A: Number of moles of a substance refers to the ratio of given mass of the substance to the molar mass…

Q: how many moles of NH3 can be made from 12.5 moles of N2?

A:

Q: How many moles of NH3NH3 can be produced from 16.5 molmol of H2H2 and excess N2N2?

A: Moles of NH3 produced from 16.5 mol of H2 and excess N2 are to be calculated.

Q: For the chemical reaction   Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3   what mass…

A: • No. of moles = MassMolar Mass⇒ Mass = No. of moles x Molar mass• Molar mass of calcium carbonate…

Q: What is the mole ratio of Hydrogen (H2) to Ammonia (NH3) in this balanced equation? N2(g) + 3H2(g)…

A: N2(g) + 3H2(g) -> 2NH3(g)

Q: The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea…

A: Formula of Urea is NH2CONH2  molecular mass of urea = 60 amu Formula of Arginine is C6H14N4O2…

Q: 4. An 8.00 gram sample of the hydrated salt, CoCl2 • X H2O was thermally decomposed into anhydrous…

A: The question is based on the concept of reaction stoichiometry. We have  to calculate mole ratio of…

Q: Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention…

A: Given :- number of moles of aspirin (C9H8O4) in sample = 0.0745 mol  To calculate :- mass of aspirin…

Q: Ammonium phosphate ((NH4)3PO4) is an important ingredient in many fertilizers. It can be made by…

A: Chemical reaction between phosphoric acid and ammonia is given by:

Q: A bottle of the pain reliever ibuprofen (C 13H 18O 2, molar mass 206.3 g/mol) contains 500 200.-mg…

A: Number of moles of a chemical compound is used to express the amount of chemical compound present in…

Q: Gypsum is the hydrate of calcium sulfate, CaSO4 2 H20. It is the primary material in sheet rock,…

A: Heating of gypsum

Q: 2N2H4(g) + N2O4(g)  →  3N2(g) + 4H2O(g)   a. How many moles of water form from 0.448 moles of…

A: Given reaction is  2N2H4(g) + N2O4(g)  →  3N2(g) + 4H2O(g) We need to find number of moles of H2O…

Q: In an experiment, 34.8243g of copper (II) nitrate hydrate, Cu(NO3)2•zH2O was heated to a constant…

A: Given, mass of copper (II) nitrate hydrate is 34.8243g and when heated the mass is 27.0351g.  The…

Q: a correct mol ratio for the relationship between hydrogen gas and ammonia in the following equation…

A: For determined of mol ratio first required a balance equation. The coefficient ratio of two…

Q: 51. Ascorbic acid, or vitamin C (C,H0,), is an essential vitamin. It cannot be stored by the body…

A: The solution is given below -

Q: ?How many grams of Na3PO4 required to prepare 8 N in 500 ml 323.6 gm. O 218.6 gm. O 656 gm. O

A:

Q: How many moles of Pb(SO4)2 are equivalent to 186.7 g of Pb(SO4)2 (Mw. 399.34 g/mol)?

A: Number of moles = mass /molar mass

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.