A sample of phosphorus weighing 2.50 grams is burned in the presence of oxygen. What is the emperical formula of the phosphorus oxide compound if the product has a mass of 5.73 grams, what is the actual molar formula or the compound if the molar mass is determined to be 285 grams/mol? What would be the correct name for this molar formula?

Q: The atomic molar mass of some elements, as shown in the periodic table, is as follows. Atomic molar…

A: moles of calcium = 3.00 molAtomic molar mass of calcium = 40.08 g/molmass of calcium = ?

Q: A compound containing carbon, hydrogen, and oxygen contains 60.00% carbon by mass and 8.05% hydrogen…

A: Since you have posted  a question with Multiple subparts. We will solve the first three subparts for…

Q: 7. Arrange the following compounds in the order of increasing acidity.{ www.he c) a) b) d) OH e) H

A:

Q: 23.  Determine the number of atoms and the mass of zirconium, silicon, and oxygen found in 0.3384…

A: Avogadro’s number is the number of atoms or molecules present in one mole of substance. The value of…

Q: What is the molar mass of a particular compound if 0.050 mol weighs 5.96 g?

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Q: For the following reaction, 24.7 grams of iron are allowed to react with 40.8 grams of chlorine gas.…

A: In the given question->weight of Fe = 24.7 gmweight of Cl2= 40.8 gm-> Limiting reactant is…

Q: Suppose a 17.8640 g sample of a NaCl and KCl mixture contains 3.5286 g of NaCl. What is the percent…

A: The mass percent of the component in the mixture can be calculated by using the below formula- Mass…

Q: How many grams are in 1.18 x 1021 HF molecules? H = 1.008 g/mole and F =19.00 g/mole

A: Number of mols = Weight in gMolecular weight in g/mol Then Weight of the substance = Number of mole…

Q: A chemist adds 2.00 L of a 0.0778M potassium dichromate (K₂Cr₂O₂) solution to a reaction flask.…

A: Volume of potassium dichromate solution = 2.00 LMolarity/concentration of potassium dichromate =…

Q: A 1.7500 g sample of a zinc compound ("ZnX") contains 0.8400 g of zinc. What is the molar mass of…

A: Given the mass of the unknown compound, ZnX = 1.7500 g Given the formula of the unknown compound is…

Q: Assume aqueous solutions of Potassium Iodide and Silver Nitrate are the starting substances…

A: Potassium iodide reacts with silver nitrate to produce a precipitate of silver iodide and potassium…

Q: part 1 of 9 Balance the equation NH3 + O2 N2 + H2O Given 1.25 mol of the reactant NH3, deter- mine…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.

Q: What is the molar volume of 45.8 grams of Titanium (IV) hydroxide?

A: At standard pressure (1 atm) and temperature(273 K) volume of 1 mole of a substance is 22.4 L.

Q: Solid calcium sulfate is collected in a Büchner funnel and dried. The mass of the solid product is…

A: We are given mass of calcium sulfate and we have to find mass of CaCO3

Q: What amount in moles is 4.77x10^25 (to the power of 25) molecules?? 1.2.87x10^49 mol 2.79.2 mol…

A: Molecules = 4.77 x 1025

Q: Liquid octane (CH₂(CH₂) CH₂) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide…

A:

Q: A compound is composed of the elements, carbon, hydrogen, and oxygen only. Combustion of the…

A: Given: Compound contains only C, H and O. Mass of compound combusted = 10.000 g. Mass of CO2…

Q: If 1.4555 g of phenyl bromide are involved in the Grignard reaction, how many millimoles of phenyl…

A:

Q: ' Sodium hydroxide, NaOH is a strong base that is used in industrial synthesis and processes such as…

A: Given  Molar Mass of NaOH (sodium hydroxide) = 40g/mol  Molar mass is mass of 6.022 x 1023 formula…

Q: According to the following reaction, how many moles of chlorine gas are necessary to form 0.452…

A:

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

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Q: When most metallic elements are heated in the presence of oxygen, they undergo a combustion reaction…

A: The question is based on the concept of experimental chemistry.On heating metal in the presence of…

Q: How many molecules (not moles) of NH3NH3 are produced from 8.69×10−4 gg of H2H2? Express your answer…

A:

Q: In the equation, Molecular formula = n x empirical formula, what does n denote? The molar mass of…

A: First of all You need to be clear about what is empirical formula and what is molecular formula.…

Q: Hello! I am having difficulty with this problem. I do not understand the example and need it broken…

A:

Q: A student performs an experiment like the one you saw in Experiment 8.  The student determines that…

A: Using the concept of weight percentage by mass we can calculate the total mass.

Q: Consider the chemical reaction N2 + 3H2 = 2NH3    If one begins with 0.25 mole N2  and excess…

A:

Q: Part 1: Effect of Concentration The first part of the experiment is carried out at constant (room)…

A: The concentration of an ion in a solution can be determined using the formula, Concentration is…

Q: Molar Masses A = 141.8 9 mole D = 63.996- g mole E = 128.24- mole 1 G = 56.028 mole X = 48.044–g Z =…

A: Limiting Reactant is the reactant which is completely consumed during the course of reaction.  The…

Q: Suppose a student starts with 2.4319 g of a sand mixture and separates the components into 1.3012 g…

A: percent of SiO2 in the starting mixture =    =Mass of SiO2 × 100/ Total Mass of the mixture =…

Q: How many  molecules of oxygen (O2) are needed to produce 1.5  mol of NO by this reaction?

A: How many molecules of oxygen (O2) are needed to produce 1.5 mol of NO by this reaction?

Q: Ca + 2H2O ? Ca(OH)2 + H2 Using the equation above, how many molecules of H2 could be produced of 50…

A:

Q: The molar mass of aspirin is 180.16 g/mol. What is the theoretical yield in grams, for the aspirin…

A: NOTE : Since the concentration of acetic anhydride is not given, I'm assuming it is present in…

Q: You have 8.72 x 1025 molecules of water. Find the volume of this in milliliters. Water has a molar…

A:

Q: According to the following reaction, how many grams of hydrogen gas are necessary to form 0.154…

A: The reaction given is  Nitrogen (g) + hydrogen (g) ------> Ammonia (g)  => N2 (g) + H2 (g)…

Q: If a sample of BaBrz is found to contain 2.34 · 103 mol of Ba2+ ions how many moles of Br" ions are…

A: 1 mole of BaBr2 after 100% dissociation produces 1 mol Ba2+ ions and 2 mol Br- ions…

Q: Which of the following is true about finding the molar mass of potassium sulfate, K₂SO4? A. The…

A: The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mol) of…

Q: A student synthesizes tin oxide to create a compound with generic formula SnxOy. She does this by…

A: Given : mass of product = 39.10 g           Mass of oxygen= 30.80 g  Molar mass of oxygen= 15.999…

Q: Calculate the mass of each element in Rhenium Bromide (ReBr3) when 93.7 g of Bromine gas (Br2)…

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.