What amout (moles) is represented in 20.0mg caffeine C8 H10 N4 O2

Q: Calculate the number of grams of sodium in 8.2 g of each of the following sodium-containing food…

A: Given compounds are : a). NaCl (table salt) b). Na3PO4(sodium phosphate) c). NaC7H5O2 (sodium…

Q: How many moles of lactic acid (C3H6O3) are contained in 3.288 grams of lactic acid? (4 sf)

A: To calculate the moles of any substance in given mass , we use the formula : Moles = mass / Molar…

Q: Write the chemical formula for 1 mol of compound X containing 2 mol Al and 3 mol O.   X= ?

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Q: In each breath we tahe in q.5 x10 atoms of OXygen How muny Oxygen Coa,3ag/mol) are contured In each…

A: Given that, Number of atoms of oxygen taken in each breath = 9.5×1022 atoms or 9.5×1022 molecules *…

Q: Calculate the number of moles of Fe2O3 in 10.5 g sample. Submit your answer to 3 significant…

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Q: How many moles of water are present in a 20.00 gram sample of potassium carbonate sesquihydrate,…

A: Given that:  Mass of K2CO3.1.5H2O(potassium carbonate sesquihydrate) = 20.00 g Molar mass of K2CO3 =…

Q: A vial stores 4 g of estradiol dissolved in an organic solvent. How many mols of estradiol are in…

A: Mass of estradiol in the vial = 4 g Molecular formula of estradiol = C18H24O2 Mass of one oxygen =…

Q: Paragraph Styles 3. 4. 2. Determine the weight needed to create the concentration 475 ml of the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Iron (III) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4 are…

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Q: The equiVatent weight of Naz Pou is ? 98 54,6 B 32,6

A: Equivalent weight = Molar weight / valency factor  For salt valency factor is either total cationic…

Q: 1. Convert the following into moles if they have 25.5 g of the ff: a. Zinc, b. Cucl2 c. KSO4

A: Mole is defined as the mass of a substance which contains 6.023 * 1023 particles of the substance.…

Q: Ascorbic acid (C,H3O6) is also known as Vitamin C. How many molecules of C6H;O6 does a Vitamin C…

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Q: assume citrix acid takes up 7.96% ( by volume ) of lime juice. How many moles of citrix acid in the…

A: Given: Molar mass of Citrix acid (C6H8O7)   = 192.14 g/mol Density of Citrix acid = 1.66 g/cm3 Moles…

Q: Which of the following will react with Mg (s)? a.Co(NO3)2(aq) b.FeCl2 (aq) c.NaC2H3O2(aq)…

A: More electropositive metal can replace less electropositive metal by redox reaction. In redox…

Q: The molecular formula of a citric acid molecule CeHs.Or. What is the percent of carbon in the…

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Q: Calculate the number of molecules in 13.8 mol H2O.

A: This problem is based on the formula,   no. of molecule= mole × Avagadro number

Q: Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea,…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: What is the NH3 (in mg/L) of household ammonia that contains 3% by weight of NH3?

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Q: How many moles of NaOH are present in 21.6 mL of 1.00 M NaOH

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Q: Choose the correct concentrations of 48 mg/L CO2 and 27 mg/L Mg²* in mg/L as CACO3 O 155 and 89 mg/L…

A: Given data : CO2 = 48 mg/L Mg2+ = 27 mg/L

Q: Find out the molar mass of V3(PO4)5. Select one: O 626 g/mole O 672.68 g/mole O 527.68 g/mole O…

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Q: Calculate the number of moles present in the 48.4 g of a KCl sample. A)Number of moles of KCl is…

A: The number of moles of a given species in the given sample is calculated by the expression (1). In…

Q: When CH3(OH)2 is dissolved in water, how many particles are in the solution?

A: It is Ca(OH)2 Number of particles depends upon nature of electrolytes  Strong electrolytes…

Q: How many moles of aspirin (C9H8O4) are in 2.00 g of aspirin?

A: Calculate moles of 2.00 g of aspirin ?

Q: Regular treatment with low-dose aspirin is used to help prevent cardiovascular disease. How many…

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Q: What is the molar mass for the Dinitrogen Trioxide?   A. 30.0 grams/mole   B. 150.0 grams/mole…

A: Since we know that the molar masses of nitrogen and oxygen are 14.0067 g/mol and 15.999 g/mol…

Q: How many moles are present in 25.8 g of H2CO3? O 0.416 mole O 1.208 mol O 0.625 mol O 0.948 mole

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Q: A cereal contains 11.0 grams of sucrose (C::H2:O11) per 60.0 grams of cereal How many grams of…

A: Given: Mass of C12H22O11 = 11.0 g Mass of cereal containing 11.0 g C12H22O11 = 60.0 g And moles of…

Q: How many carbon atoms are contained in each of the following number of moles: (a) 2.00 mol; (b) 6.00…

A: Number of carbon atoms = moles of carbon atoms x Avogadro's number   (a) Number of C atoms = 2.00 x…

Q: What number of atoms of nitrogen are present in 6.19 g of each a. glycine: C2 H; O2N atoms N

A: Moles of any compound or molecule is found by the formula mass of molecule divided by its molar mass…

Q: Wastewater contains 10 mg/L NH3. Its N concentration = _____ mg N/L. (Hint: atomic weight: N, 14…

A: Wastewater contains 10 mg/L NH3 . If we want to calculate the concentration of N then we need to…

Q: Sucrose mass (g) Concentration (M) 0.503 0.984 1.443 1.922

A: For this we firstly need to know about the Concept of molar concentration, as we need to answer this…

Q: For each pair of molecules given in the table below, identify the correct relationship. # 1 OH OH #…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Calculate the mass in grams of 0.820 mol glycerol (C3H8O3).

A: The amount of glycerol is given as 0.820 mol  Molar mass of glycerol 92.09382 g/mol Conversion…

Q: Calculate amount of vitamin c in sample (mg) and concentration of vitamin c (mg/ml). Given: DCIP…

A: Each cm3 of 1% DCIP solution equvalent to 6.071× 10^-4 g ascorbic Acid. 268.1gm DCIP=1Mol…

Q: 1. Convert 0.485 mol0.485 mol of ammonium (NH+4)(NH4+) ions to equivalents.   2. Convert 1.69…

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Q: How many moles are contained in each of the following? a. 100. g of NaCl b. 25.5 g of CH 4  c. 0.250…

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass.  a.…

Q: Convert to moles: 2.00 g of valium /diazepam (C15H13CIN20) O 5.46 mol O 0.00843 mol O 0.00824 mol O…

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Q: How many moles of carbon are present in 20 grams of C3H8? 0.40 moles C 0.80 moles C 1.40 moles C 3…

A: One mole of the compound has the weight of molecular weight .

Q: Calculate the number of grams of sodium in 7.5 g of each of the following sodium-containing food…

A: The number of moles of a species is calculated by expression (1) in which n is the number of moles,…

Q: How many molecules are contained in each of the following? (a) 9.6 mol C2H4              (c) 23.2 g…

A: Here given some sample as follows,(a) 9.6 mol C2H4 ,(b) 2.76 mol N2O, (c) 23.2 g CH3OH, (d) 32.7 g…

Q: How many sugar molecules are present in 300 mL of a 2.0 M solution? (The formula for sugar is…

A: Molarity = 2.0 M  Volume = 300 ml = 0.3 litres Number of moles = molarity x volume(litres)

Q: -0.5% glucose . 0.25% glucose 1. 0.1% glucose 5. 0.05% glucose 6. Unknown roximately how much…

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Q: Calculate the number of moles in the following quantities: 26.6 g KNO3 42 millimol NaOH 3.4 x 103…

A: 1) Since moles = mass / molar mass mass of KNO3 given = 26.6 g And since molar mass of KNO3 = 101…

Q: Iron (III) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4 are…

A: 1 mole = 6.022×1023 [Avogadro's number ] Mass of one mole of molecules of a substance is called its…

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

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Q: The recipe for crazy cakes is as follows: 1 1/2 cups flour (all-purpose) 3 Tbsp. cocoa (unsweetened)…

A: The moles of acetic acid are calculated as,

Q: When the equation is completed and properly balanced, what would be the product? _Mg(s) + _N2(g) ->…

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Q: Three mL of 0.00300 mg/100 mL Congo red (696.7 g/mol) reacted with 0.100 mL of 0.900 mM H202…

A: It is an example of stoichiometry we are required to find the  moles of Congo red reacted per mole…

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.