An oxide of phosphorus with Mr = 283.88 contains 43.64% of phosphorus by mass. The MOLECULAR FORMULA is ____. Select one: a. P2O5 b. P4O6 c. P4O10 d. P2O3

Q: 95: A 1.45-g sample of phosphorous burns in air and forms 2.57 g of a phosphorous oxide. Calculate…

A: When phosphorus burns in the air, it absorbs oxygen gas which results in the formation of oxide. The…

Q: Upon burning Mg in air, magnesium oxide and magnesium nitride are formed. The correct statement…

A: Here, it is given that, upon burning magnesium in the air, magnesium oxide and magnesium nitride are…

Q: An irregular shape of silicon block (density = 1.93 g/cm3) is deepened into water and caused a 31 mL…

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Q: A sample of an iron alloy contains 90.2 g Fe, 2.15 g C, and 1.01 g Cr. Calculate the percent by mass…

A: Total mass of the alloy = mass of Fe + mass of C + mass of Cr = 90.2 + 2.15 + 1.01 = 93.36 g

Q: Please help Element Moles Mass Cr 0.00450 _____ Fe _____ 84.0mg Ti 1.075×10-3 _____ Hg _____ 1.50…

A:

Q: A 2.63 g2.63 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

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Q: c. FeS(s) + 2HCI(aq) → H2S(g) + FeCl2(aq) Soth (b) and (c) a. 2Sb(s) + 31g) b. 2H9O(s) → 2Hg(l) +…

A: Decomposition reaction are the reactions in which the reactant breakdown to form two or more…

Q: What mass of Cu(NO 3) 2 can be prepared from the reaction of 5.00 grams of copper with 5.00 grams of…

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Q: Calculate the mass percent of manganese (Mn) in potassium permanganate (KMnO4).

A: First of all, before leading to the solution we will learn about the meaning of mass percent. The…

Q: D. Empty Volume Determination of Aluminum A sample of aluminum weighs 27.0 g and has a volume of…

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Q: Aluminum has a density of 2.70 g/cm3 and molar mass of 26.98 g/mol. Its atomic radius is 143 x 10 –…

A: Answer:

Q: Calculate the grams of nitrogen in 23.4 g of Ca(NO3)2.  2. Calculate the mass percent of chlorine…

A: The given data : 1.The mass of the Ca(NO3)2 = 23.4 g To determine = The mass of nitrogen 2.…

Q: 29) What is the mass of 0.100 moles of Lithium? A) 0.649 B) 6.49 C) 12.98 D) 3.45 30) Which of the…

A: 29) The mass of 0.100 moles of Lithium can be calculated as - This is the correct answer but…

Q: M is a Group I metal. 0.5 mol of the metal sulphate weighs 71.05 g. What is the relative atomic mass…

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A: Element can be classified as metal or non metal or metalloid

Q: How many grams of magnesium are required to produce 4.380 kg of Si? (At mass: Mg324.31: Si-28.09)…

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Q: a. ? + Co Mn + He 59 27 b.?→ N + e c. e + Kr -? 36 d. He + Am →? + 2n

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Q: A 2.05 g sample of an unknown compound contains H, S, and O. If the compound contains 0.050 g H and…

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Q: Give the molecules, atoms, and Ions in .150moles of Fe(OH)2 Fe= 55.45g O= 16.00g H= 1.01 g…

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Q: find the empirical formula for the tin oxide formed? calculate the sn% and o%? calculate the %error…

A: Given information: mass of crucible= 25.7700 g mass of crucible and tin =26.6952 g mass of crucible…

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Q: 1. The processing plant you work for needs to produce 500 g of Li;Ns) from Lis) and N(e)- Your…

A: Since, you have posted two questions we will provide you the solution of first question. Please,…

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A: You can find the center of mass of the 3 Hs first, then find the center of mass between that point…

Q: For each reaction, predict the sign and find the value of ΔS°:

A: Given:-                     a    3NO2g +H2Ol  →2HNO3l +NOgb   N2g +3F2(g)   →2NF3gc   C6H12O6s +6O2g…

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Q: Strontium nitrate consist of 72.8 mmol. How many pg of substance is this? The answer must be 1.54 x…

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Q: How many grams of magnesium are required to produce 4.380 kg of Siı? (At mass: Mg-24.31; Si-28.09)…

A: Recall the given reaction,  SiCl4  +  2 Mg                   Si  +  2 MgCl2   4.380 Kg of Si is…

Q: 18. A compound with molecular mass of 74.1 g/mol is found tO contain 64.8% carbon, 13.5% hydrogen,…

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Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed in…

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

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A: For calculating the formula weight, add the molecular mass of all atoms with the no of atoms present…

Q: A cable making company produces a metal wire, with a diameter of 1.00 mm. What will be the length of…

A: Introduction: Given data: • The diameter of metal wire is 1 mm •The number of moles of metal is 1.00…

Q: My answer was 29.6%, why did i get it wrong?   In 1928, 44.8 g of a new element was isolated from…

A: I'm not exactly sure how u got 29.6 %. But the answer can not be 29.6 % for sure as its a quite high…

Q: A cable making company produces a metal wire, with a diameter of 1.00 mm. What will be the length of…

A: Given: Metal wire diameter=1 mm No. of moles=1 Density of metal=17 g/cm3

Q: A sample of an iron alloy contains 87.7 g Fe, 2.60 g C, and 1.52 g Cr . Calculate the percent by…

A: Calculate the percent by mass of each component present in the alloy sample.

Q: You are making an alloy of tantalum (Ta) with an atomic weight of 180.94788 g/mole and magnesium…

A: Molar mass of tantalum = 180.94788 g/mole  Molar mass of magnesium = 24.3050 g/mole  Given mass of…

Q: Una masa de mercurio ocupa 0.750 L Qué volumen ocuparia una masa igual de etanol? La densidad del…

A: Note - Since you have asked multiple question, according to our policy, we are supposed to solve…

Q: 1. Atomic spectroscopy analyses the elemental composition of the sample, essentially giving data to…

A: Dear student since it is a multiple subparts questions according to guidelines here I am solving…

Q: 17. A 5.0 g sample of calcium nitrate (Ca(NO3)2, M=164) contaminated with silica (SiO2, M=60.1) is…

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Q: Ca₃(PO₄)₂(s) + H₂SO₄(aq) → CaSO₄(s) + H₃PO₄(aq) calculate the mass in grams of Ca₃(PO₄)₂ that will…

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Q: 4. A student had a sample of CaCl2 • nH20. He heated the sample until the mass did not change. From…

A: Since you have posted multiple questions, we are entitled to answer the first only. The experiment…

Q: Calculate the mass percent composition of iron for each iron ore: Fe2O3Fe2O3 (hematite), Fe3O4Fe3O4…

A: a) mass % composition of iron in Fe2O3 (hematite). molecular weight of Fe2O3  = 159.69 g/mol…

Q: what is the absolute uncertainty and relative uncertainty of your mass value of PbSO4 obtained by…

A: Absolute Uncertainty - the outright vulnerability is the number which, when joined with a detailed…

Q: Liquid Hf- Nb infoses into ByC and reacts to torm Nbs Bat Nb,C Determine the mass of Nb to give you…

A: A balanced chemical equation is necessary to abide by the law of conservation of mass and to make…

Q: A 67.2 gg sample of a gold and palladium alloy contains 2.68×1023 atoms. What is the mass percentage…

A: Mass percent of an element is the ratio of its mass  in the compound to the total mass of the…

Q: Crystals of magnesium phosphate and glucose, C6H12O6(s), were dissolved together in a beaker of…

A: GIVEN:-  Crystals of magnesium phosphate and glucose, C6H12O6(s), were dissolved together in…

Q: The molar masses of the four natural isotopes of chromium are 50 g mol-1, 52 g mol -1 53 g mol -1…

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Q: Given Ongiali mass of KNO3, =20009 mass 07 KNO3 collected by pt°z.ltration=o+579 07 KNO3 re mainina…

A: Original mass of KNO3 = 2g After filtration mass of potassium nitrate remaing is 0.57g. It means…

Q: Q/ Prepare 0.1 N and 0.1 M of 98% H,SO4 in 250 ml. M.wt of H,SO4= 98 g/mol, and its Specific density…

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Q: How many g of water you need to add into HCl solution (V= 130.0 cm3 mass percentage 22.0 % (w/w),…

A: Mass = Volume ×Density

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.