How many formula units are in 0.761 g of iron(III) nitrate?   A. 1.89 x 1021 f.u.   B. 3.13 x 1021 f.u.   C. 3.15 x 10-3 f.u.   D. 2.36 x 1021 f.u.   E. 3.93 x 10-3 f.u.

Q: The compound(NH4)2 S2 O3, Which element is present in the largest percent by mass? A. N B. S C. O…

A:

Q: 13. How many oxygen atoms are in 225 g of O2? a. 4.23 x 1024 b. 6.84 x 1024 c. 8.47 x 1024 d. 1.69 x…

A: Number of Atoms of Oxygen can be calculated as -

Q: P4010 What is its empirical 13. The molecular formula for tetraphosphorus decoxide is Formula? PO25…

A: Given, Molecular Formula = P4O10

Q: Which one of the following is made up of formula units? O A. NazP O B. Mg OC.F2 D. CH4

A: Formula units :-  An ionic compound is made up of formula units. Ionic compounds consists oppositely…

Q: 1. Complete the table below: Name Formula Molar Mass (include units!) sodium sulfate C3N4 magnesium…

A: This question is related to nomenclature part of chemistry. The name of compound is written using…

Q: Determine the number of molecules of Cr.O. that form when 1.34 x 10 gof oxygen completely reacts…

A: Given: Mass of Oxygen = 1.34 x 103 g Given Reaction is  To determine- Number of molecules of Cr2O3

Q: How many molecules are in each sample? a. 6.5 g H,0 b. 389 g CBr, c. 22.1 g O, d. 19.3 gC,H10

A: a) 2.5g H2O = Mass of H2O = 6.5g Molar mass of H2O = 18g/mol The number of molecules can be…

Q: formula mass MgBr2.

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Q: The reaction of sulfur powder (S8) with oxygen gas (O2) results in the formation of one of many new…

A: We know that, molar mass of O = 15.999 g/mol molae mass of S = 32.065 g/mol

Q: How many hydrogen atoms are in the molecule below?

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Q: 1. Determine the mass of each of the following amounts: a. 1.366 mol of NH3 ans: 23.28 g NH3 b.…

A: The formula to convert the mass of compound in gram to moles is as follows: Number of moles of…

Q: Suppose that a compound containing copper and chlorine contains 0.01139 moles of copper and 0.03813…

A: According to the question:  moles of copper in compound = 0.01139 moles moles of chlorine in…

Q: Which is the molecular formula of a sample of a compound containing 6.444 g of boron (B) and 1.803 g…

A:

Q: How many oxygen atoms are present in 3,0 x 1023 molecules of Ca(NO3)2?   A. 6.0 x 1023   B. 1.5…

A: 1 molecule of Ca(NO3)2 have 6 oxygen atoms as NO3 have 3 oxygens and (NO3)2 will have 3 x 2 = 6…

Q: How many iron ions are present in 43.6 g of Fe203? Select one: O a. 1.64 x 1023 ions O b. 2.63 x…

A:

Q: What is the mass in grams of 4.57 mol of ammonium sulfite, (NH4)2SO3? b. 0.00393 g c. 254 g a. 53.1…

A: The moles of  given = 4.57 molThe mass of = ?

Q: How many formula units are present in 5 moles of Al2S3 ? [?] x 10 fun. Al₂S3 Make sure your answer…

A: Formula units are nothing but the number of atoms present in the particular moles of a compound. Use…

Q: 1. 2 moles of Ar atoms contain how many atoms?           A.   1        B.   1.204 x 1024…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: B. Accutane is found to contain 79.95% C and 9.40% H with the remainder being oxygen. Its molar mass…

A: elements    percentage    atomic mass    moles=%/at. mass    simplest molar ratio        C…

Q: What is the total number of atoms contained in 3.00 moles of cobalt?

A: Given :- number of moles of Co = 3.00 mol  To calculate :- number of atoms of Co

Q: What is the formula weight of magnesium hydroxide, an ingredient found in antacid? A. 72.0 u C. 58.3…

A: The mass of one formula unit of a substance is known as formula mass. The formula mass of the sum of…

Q: The chloride of an unknown metal is believed to have the formula MCl3. A 2.395-g sample of the…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: A compound is composed of 57.51 % carbon, 1.63% H, 18.89% N, 13.05 % O, and the remainder other…

A: Given , A compound contains 57.51 % carbon , 1.63 % H , 18.89 % N , 13.05 % O and remainder are…

Q: What is the mass of oxygen atoms in 0.305 moles of Fe(CO)5 ?

A: 1 mol Fe(CO)5 contains 5 moles of oxygen atom. Mass of oxygen = number of moles of oxygen × molar…

Q: A 0.479 g sample of nitrogen, oxygen or neon gas occupies a volume of 265 mL at 157 kPa and 20°C.…

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Q: A compound is composed of 48.88 % carbon, 7.75% H, 25.42% N, 12.54 % O, and the remainder other…

A: Calculating mass of carbon. Mass percentage of carbon/Total mass of the given compound*100

Q: A molecule contains only carbon and hydrogen. The percent hydrogen is 27.45 %. Determine the…

A: The emperical formula of the compound is given below

Q: How many atoms of oxygen are in 3.52 moles of calcium nitrate?   Select one: a. 8.48 x 10^24 atoms O…

A: Mole is defined as the ratio of given mass and molar mass. The unit of mole is mol. It is utilized…

Q: How many atoms of hydrogen are present in 4.54 g of ammonia? A. 6.64 x 1019 B. 8.20 x 1024 O C. 1.61…

A: We know that , 1 mole of substance contain  = 6.022 × 1023  atoms By using this relation , we can…

Q: 39. Convert 2.001x102 formula units of Ba3(PO4)2 to mass, in grams, of Ba3(PO4)2. Mass of Ba3(P04)2:

A: Avogadro's number equals to the moles of that substance which can be used to find its mass if its…

Q: One mole of glucose C_6 H_12 0_6 contains how many hydrogen atoms

A:

Q: 6 What is the mass of 2.0 billion billion atoms of gold? (1 billion is 1 x 10^9, so a billion…

A:

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.