An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume 100.0 g of the compound, what is the mass in grams of osmium that are present in the compound? b. How many moles of osmium are present in 100.0 g of the compound? c. If you assume 100.0 g of the compound, what is the mass in grams of chlorine that are present in the compound?

Q: For the chemical reaction: Fe(NO3)2 + 2 КОН 2 KNO3 + Fe(ОН)2 Which of the following is the correct…

A: Given  Number of mole of Fe(NO3)2  = 3.10 mole mass of potassium nitrate     = ?

Q: what mass of cerrusite PbCO3 (MM= 267.21g/mol) contains 110g of O

A:

Q: 1) a chemical mole A-is a kind of material B-is a large molecule C-contains an undetermined number…

A: Mole concept: Avogadro's number = 6.022 × 1023 1 mol of any substance contain 6.022 × 1023 molecules…

Q: ow many fluorine atoms would it take to make up a mass of2.83×10—22 g?   25 atoms    None of the…

A: Given data, Mass of F = 2.83 x 10-22g Data taken from google; Molar mass of F = 18.998 g/mol

Q: 8. A sample of a compound contains 15.60 g Mg and 10.27 g O. How many g Mg are in another sample of…

A: In the sample of magnesium oxide the amount of magnesium and oxygen is as follows: Mass of Mg =…

Q: Consider a 1.245 g sample of glucose (C H, O.). Calculate the following. moles of glucose in the…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: What is the molar mass of ibuprofen, C13H18O2? A) 206.3 g/mol B) 289.4 g/mol C) 29.0 g/mol D)…

A: Molar mass of C = 12.01 g/mol  Molar mass of H = 1.008 g/mol  Molar mass of O = 16.00 g/mol

Q: What is the mass in milligrams of? (a) 0.367 mol of HNO3? (b) 245 mmol of MgO? (c) 12.5 mol of…

A:

Q: How many grams of NBR3 can be made from 2.22 x 10-2 moles of Br, ? N2 + 3 Br2 2 NB13 + 44.0 kJ The…

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Q: Mass of Zn 2.44 g Mass of Cu 0.063 g The mass of Zn and the mass of Cu in a coin are given in the…

A:

Q: A compound contains iron and bromine. A sample of the compound contains 6.371 g of iron and 10.991 g…

A:

Q: Please assist with number 2

A: The number of moles of sodium atom can be calculated as given below.

Q: A sample of NH3 has a mass of 84.06 grams.   Calculate the moles of NH3 in the sample.…

A: Given : Mass of NH3 = 84.06 g

Q: Hydrothermal vents produce many types of compounds. One such compound consists of the elements…

A:

Q: How many bromine atoms are present in 32.5 g of CH2Br2?

A: Since there are multiple questions, we are authorized to answer only the first one. If you want the…

Q: Mass of product…

A: Number of moles is defined as the amount of the substance divided by the molecular weight of the…

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: Consider the following chemical reaction:            CH4   +    2O2   ------------------>    CO2…

A: The considered reaction is, CH4 + 2 O2→CO2 + 2 H2O

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A: Given Mass of indium carbonate = 19.2 mg

Q: How many moles of ammonia contain 1.51 x 1024 NH3 molecules? A) 2.51 mol B) 0.399 mol C) 0.251 mol…

A: Number of moles = Number of molecules/6.0224 x 1023 Number of moles = Mass/molar mass

Q: Consider a 10.1 g sample of the compound cesium phosphate. a) What is the chemical formula for…

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

Q: How many atoms are there in 75 molecules of acetic acid, CH3CO2H? A compound contains, by mass,…

A:

Q: Using the following eq CH3NH2 (g)+ O2 (g)→ CO2 (g)+ H2O(g)+ N2 (g) 4.0 x 104 mol CH3NH2 contains…

A: All calculations  explained  in Handwritten solution

Q: 5. Which statement is NOT true? a. One mole of a substance contains a fixed number of particles. b.…

A:

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE):…

A: The chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE) is…

Q: A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl.  Another sample of…

A: A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl. Another sample of the…

Q: Determine the mass in grams of 4.78 × 1021 atoms of chromium. (The mass of one mole of chromium is…

A: The number 6.023 × 1023 indicates the number of atoms or molecules in a mole of any substance is…

Q: Consider the following chemical reaction. 3 Zn(C₂H₃O₂)₂(aq) + 2 Na₃PO₄(aq) → 6 NaC₂H₃O₂(aq) +…

A: The formula weight (FW) of a compound is calculated using the following expression: FW=∑ni×Mi where…

Q: c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: Given  mass % of C = 30.27 %  total mass of compound = 1.367 g  mass of SO2 = 1.765 g    Required…

Q: 25. A sample of a compound contains 9.49g silver and 3.12g chlorine. A second sample of the compound…

A: Given: 1) A sample of a compound contains Silver with mass = 9.49 g 2) A sample of a compound…

Q: How many atoms of carbon are present in 34. 5 g caffeine, Cg H10N4O2 ? A 1.08 x 1024 B 8.57 x 1023…

A: given, the weight of caffeine = 34.5g

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: We have to find empirical formula for given compound

Q: 30. A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl. Another sample of…

A: given data = a sample compound only containing S and Cl S = 2.72 g, Cl = 6.04 g another sample of…

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A:

Q: A particular oral contraceptive contains 0.0445 mg ethynyl estradiol in each pill. The formula of…

A:

Q: a. How many molecules of sulfur trioxide are present in 3.39 moles of this compound? molecules b.…

A:

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

A: Note : As per our guidelines we are supposed to answer first 3 parts .please resubmit the other…

Q: The sample is analyzed and found to contain three elements, C, H and O.  A 2.147 g sample of the…

A: The given data: The mass of the sample = 2.147 g The mass of the CO2 (g) = 4.297 g The mass of H2O…

Q: What mass of AgI (234.8 g/mol) can be produced from a 0.4745 g sample that is 53.21% MgI2 (278.11…

A:

Q: C. Calculate the number of atoms or molecules in each of the following samples. 19) 0.357 moles of…

A:

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: An aspirin tablet contains 0.325g of C9H8O4. A) How many molecules of C9H8O4 does it contain? B)…

A: Given: Mass of C9H8O4 = 0.325 g.

Q: Elements B and N form a binary compound BxNy. When 12 grams of this compound was made from its…

A: Empirical formula of a compound is the simplest positive integer ration of atoms present in the…

Q: 1. How many GRAMS of phosphorus are present in 2.39 moles of phosphorus triiodide ? grams. 2. How…

A: The molar mass of phosphorus triiodide (PI3) is 411.69 g/mol The molar mass of phosphorus is 30.97…

Q: How many moles of atoms are in each elemental sample? 1) Express your answer using two significant…

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

Q: 3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its…

A: Mass of compound = 12 g  Mass of nitrogen = 7 g  We need to determine formula of compound.

Q: a. How many moles are in 8.5x1022 atoms Xe? b. How many moles are in 7.4×10 atoms Cu? c. How many…

A:

Q: How many grams of C are present in 1.66 grams of carbon tetrachloride?  how many grams of carbon…

A: To calculate the mass of constituents present in a compound, we must have the molar mass of…

Q: ) How many grams of MgI2 is present in a 0.4745 g sample that is 53.21% MgI2 (278.11 g/mol)? B)…

A: Weight of sample = 0.4745 gm (w/w)% = 53.21 % Molar mass of MgI2 = 278.11 g/mole Molar mass of AgI =…

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.