Using your knowledge of molar mass and calculation, calculate the molar mass of the hypothetic compound: PLa2Y     a. none of above       b. 308.79 g     c. 258.79 g     d. 397.70 g   e. 277.82 g

Q: Molecular weight (g/mol) Amount density (g/mL) Mass Volume Reagent (g) (mL) (mmol) 5.198 0.0058me…

A: The table given is,

Q: How many molecules (units) are in 3.50 moles of H2SO4 ? Information that may be useful: H: mass…

A: From given  1 mole of H2SO4 contain avogadro number of molecules Then 3.50 mole of H2SO4 will have…

Q: Zn7² +1052 Z₁ [24 (H₂0) 3 (CO3)3 + EXCESS (052 2 Mile Zn [2n(H₂O) ((03) + Excess co znoks [₂ (H₂ols…

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Q: Compound Weight (in grams) Molecular Weight Barium hydroxide 10 171.34 g/mol Sodium chloride 25…

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Q: For a compound containing 181.351 g C, 36.5115 g a) the empirical formula C2H4N C3H7N C3H6N3 b) the…

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Q: Calculate the number of moles in each sample. Express your answer with the appropriate units. 71.5 g…

A: The number of moles of each sample can be calculated asNumber of moles=mass/molar massCHCl3Weight of…

Q: How many grams O in 115.6 g Fe(OH)3? Molar mass of Fe(OH)y is 106.867 Hint: 1 mole Fe(OH) has 3 mol…

A: Given,  Molar mass of Fe(OH)3 = 106.867 u Mass of Fe(OH)3 = 115.6 g.  In one mole of Fe(OH)3 , we…

Q: Calculate the percent composition for C6H5NH2? C=77.38% H=7.58% N=14.04% C=76.33% H=7.11% N=7.04%…

A: The atmic mass of each elemts are as follows:H=1; C=12; N=14The moecular mass of C6H5NH2…

Q: Calculate the percentage of water in the following hydrates An unknown hydrate, AC. XH2O has a mass…

A: The mass of unknown hydrate, AC. XH2O is = 1.632 g and the mass of the anhydrous compound, AC =1.008…

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Q: A chemical compound contains 52.14 % carbon, 13.13 % hydrogen, and 34.73 % oxygen. The molar mass of…

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Q: ▼ ▼ Part B Calculate the molar mass for Mn207, an oxide of manganese. Express your answer to five…

A:

Q: The molar mass for F e (C O 3 ) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8 grams/mole D.83.8…

A: We have given that  The molar mass for Fe(CO3) is: A. 251.4 grams/mole B.115.8 grams/mole C.139.8…

Q: An unidentified ionic compound contains approximately 29.85 g sodium, 67.50 g chromium, and 72.67 g…

A:

Q: What is the molar mass (in kg/mol) of methane (CH4)? 1 6 H 1.008 12.00 7. 0.01701 kg/mol 0.01564…

A: Molar mass of a substance is basically the sum of total mass of all the atoms to make a mole of that…

Q: 1. How many moles are present in 24.0 grams of Sb,S,? a. 1.31x10 mol b. 1.56x10 mol c. 5.94x10 mol…

A: (1) Number of moles of Sb2S5 can be determined by using the formula given below as: Moles of…

Q: Data Table 1. Moles and Atoms in Common Items Item Aluminum Cup Glass Stirring Rod Cotton Ball A.…

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Q: Determine thev molar masses of these compounds  a) KBr b) Na2SO4 c) Pb(NO3)2

A: Note: As per our guidelines, we are supposed to answer only the first three subparts. Please repost…

Q: 2.43 g sample of MgSO4 hydrate (MgSO4 · x H2O) is heated and 1.19 g of anhydrous MgSO4 remains.…

A:

Q: An unknown chemical compound made of C, H, and O is found to have the following mass percent values:…

A: Empirical formula of a compound is expressed by the ratio of minimum number of atoms of each…

Q: 6. A compound is composed of 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O. a) Working only with these…

A: Given, % H = 1.16  % O = 49.21  Si = 21.60 Mg = 28.03

Q: Using the exact mass of BaCl2 2H½O that you used (and molar masses to the appropriate BaCl2' 2H2O…

A: Barium in BaCl2.2H2O is precipitated as BaSO4. The mass of BaCl2.2H2O is = 0.9867 g The molar mass…

Q: The formula of ibuprofen (Advil®) is C13H18O2 (molar mass = 200.29 g/mol). How many moles of…

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Q: Determine the molecular formula to which the following empirical formulas and molar mass pertain.…

A: molecular formula =  empirical formula x n  This is the relationship between empirical formula and…

Q: a. Determine the empirical formula for a compound with mass percent 48.91% Carbon, 18.51%…

A: a) Assuming we have total 100 g of compound. And the empirical formula of compound is CaHbOc…

Q: 1,What is the percent by mass hydrogen in ammonium hydrogen arsenite (NH4)2HAsO4 Group of answer…

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Q: MOLAR VIEW T03/S11 If a sample of (NH4)2HPO4 is found to contain 3.79 mol of NH4* ions how many…

A: The reaction can be written as follows: (NH4)2HPO4→2NH4++HPO42-

Q: How many moles of fluorine are present in 11.77 g of mercury(II) fluoride? O a. 4.933 101 moles O b.…

A: 1) d  2) MgCr2O7

Q: Oil of vitriol is a substance that humankind has known of for thousands of years! Today the…

A: Oil of vitriol is known as H2SO4 scientifically. The atomic mass of the atoms of the constituent…

Q: 1. Given the following reaction: NazS203 + AGB → NaBr + Na3[Ag(S2O3)2] a. How many moles of Na2S203…

A: according to mole concept we easily finds the moles of reactent and products

Q: A sample of an unknown compound containing 5.00 g C, 0.56 g H, and 4.44 g 0. Determine the empirical…

A: The simplest positive integer ratio of atoms present in a compound is known as the empirical formula…

Q: Which contains the greatest mass of oxygen?   0.75 mol of ethanol (2C H5 OH)   1.0 mol of water…

A: Which contains the greatest mass of oxygen?

Q: Determine the mass, in grams, of 0.635 moles of I (1 mol of I has a mass of 126.90 g)

A: Given: Moles of I = 0.635 mol Molar mass of I = 126.90 g/mol

Q: 0.5000 g sample containing NaCl (58.44 g/mol), BaCl2 (208.23 g/mol), and 11.56% by mass of…

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Q: MOLES/MOLECULES T04/SO2 If a sample of B10H10Bra is found to contain 1.20 - 1019 B atoms how many…

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Q: Name: NetID: 1. What is the molecular mass (in amu) and molar mass (in g mol) for chloroform…

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Q: The molar mass of sodium fluoride is A. 51.1 g/mol B. 42.0 amu C. 42.0 g/mol D. 20 g/mol E. 25 g/mol

A:

Q: only A, X and Z elements in different multiples of the empirical formula.  Using the data contained…

A: Recall the data, Element Percent Composition (%) Molar Mass (g mol-1) A 40.68 12.01…

Q: Substanc Molar Mass (g/mol) e 14.01 16.00 Al 26.98 Fe 55.85 FesNz -195.57 AIN 40.99 Directions: Use…

A: No of moles is Mass of substance divided by its Molar mass

Q: Hi. I am trying to calculate the percent of water in an uknown hydrate. The given data is: mass of…

A: Law of conservation of Mass :- Law of conservation of mass states that mass can neither be created,…

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Q: 20 moles of Glucose(C6H1206) weigh equal to O 360 O 1800 O 6.022*103 O 3600

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Q: A. Determine the empirical formula for a compound with mass percent 48.91% carbon 18.51% hydrogen…

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Q: 1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is…

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Q: What is the mass (in grams) of 3.2 x 1021 molecules of ibuprofen (C13H1802; molar mass 206.3 g/mol)?…

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Q: MOLAR VIEW T03/S01 How many moles of NH.+ ions are present in 2.30 · 103 mol of NH.Br formula units?…

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Q: 425.66J/2.0360 g. Convert to kj/mol. Show the work. Molar mass = 39.99 NaOH B) 425.32J/ 1.9532g.…

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Q: *00 0.0 A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. How many moles of O are in the…

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Q: Given the answers to the previous questions, please answer part c (find the empirical formula)

A: Empirical formula of a compound represents the proportion of the elements in a compound irrespective…

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.