Mass of magnesum before experiment is 0.33g  after is 0.49g   Calculate the ratio between the moles of magnesium used and the moles of oxygen used. Express  this ratio in simplest whole-number form.

Q: estion 15 of 27 How many grams of F are in 155 g CaF,? mass:

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Q: Determine the mass in grams of 5.28 × 10²¹ atoms of barium. (The mass of one mole of barium is…

A: Given, Number of barium atoms =5.28×1021 atomsmass of one mole of barium =137.33 gwe are asked to…

Q: In today's laboratory you are going to mix elemental copper and elemental sulfur to form a…

A: molar mass of Copper = 63.55 g/mol The relation between the mass of a substance and the number of…

Q: molecular formulas is also an empirical formula?

A: An empirical formula is defined as the minimum ratio of each of the elements present in a molecule.…

Q: Mass of Zinc and Iodine was taken during the reaction is - zinc - 2.06 g, iodine -2.15 g dry…

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Q: Can I have at least two reason why. The mass of the mgo formed could be higher than expected

A: To find: Why the mass of MgO formed could be higher than the expected.

Q: Using the moles of zinc and I− that reacted, compute the number of iodides per zinc ion in zinc…

A: Zinc ions combines with iodide ions to form zinc iodide which is a white powder.

Q: Calculate the number of grams in the following in 1.77 moles of nitrogen dioxide, NO2. Must Show…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Using your correct formula for copper chloride writes a balanced equation for the reaction that took…

A: Given : mass of copper chloride = 1.750 gram  To find : balanced chemical equation.  Solution : As…

Q: Phosphorus occurs naturally as calcium phosphate. What is the empirical formula for this substance?…

A: Concept introduction: Empirical formula for ionic compound indicates the smallest whole number ratio…

Q: A certain compound is composed of 26.57% potassium, 35.36% chromium and 38.07% oxygen.  Derive the…

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Q: Calculate the mass, in grams, of 752 atoms of lithium, Li (1 mol of Li has a mass of 6.94 g). with…

A: Number of moles = Given number of atoms NA

Q: Determine the number of moles of the compound and determine the number of moles of each type of atom…

A: Since you have posted a  question with sub-parts , we are entitled to answer the first three…

Q: This is the chemical formula for diethyl ether: (CH,CH,),O. Calculate the mass percent of carbon in…

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

A: Empirical formula represents the simplest whole number ratio of elements present in a compound while…

Q: What formula do you use to answer the question, Hydrogen and oxygen undergo a chemical reaction to…

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Q: Which has more mass, a mole of potassium or a mole ofsodium? Explain your answer.

A: The atomic mass of the element is equal to the sum of the number of protons and neutrons present in…

Q: Calculate the mass %'s for hydrogen and oxygen in the two samples given below. Is the law of…

A: The mass % of an element in a compound is given by: Mass% = Mass of element in compoundTotal mass of…

Q: Using the average atomic mass, calculate the mass in grams of 292 mol of Iron

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Q: 2. The rubbing alcohol was found to have 60% carbon, 13.4 % hydrogen, and the remaining percent by…

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Q: n. What is the empirical formula?

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Q: Find the number of moles of chlorous acid in 452g

A: Given: Mass of chlorous acid = 452g The molecular formula of chlorous acid is HClO2 The molecular…

Q: Choose the letter/s that applies: In the periodic table, where Carbon is 12, it is stating that:…

A: Given that : We have to identify which statement is correct for Carbon-12 : a. carbon's weight is 12…

Q: The number of moles of an element in a compound can be calculated from?

A: The molecular formula of a compound gives the total number of atoms of each element present in each…

Q: How many moles of calcium atoms do you have if you have 7.92 × 10²¹ atoms of calcium. (The mass of…

A: Given: Atoms of calcium is 7.92 × 10²¹ Mass of one mole of calcium is 40.08 g.

Q: How many moles of oxygen atoms are in 5.0E-1 moles of CO? Only give the numeric value of your…

A: The molecular formula of carbon monoxide ( CO ) suggests that one molecule of carbon monoxide…

Q: 10. Calculate the mass of one mole of glucose (C,H,,O).

A: Given that , Substance = glucose (C6H12O6) moles = 1 mol Now we know molar mass of glucose=…

Q: part 1 of 3 Epsom salts are magnesium sulfat tahydrate. How many atoms of oxyger 7.71 g of epsom…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Use the moles of carbonate ion, CO,²-, to determine the moles of MgCO, and CaCO, present in the…

A: Part 1 :  a.) As in limestone there are both CaCO3 and MgCO3 . So CO32- will come from both CaCO3…

Q: Determine the number of atoms in 31.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Interpretation-  To determine the number of atoms in 31.0 g of calcium ( Ca ) molar mass is already…

Q: A 3.20 mol sample of aluminum represents how many atoms?

A: Number of atoms = moles of Atom X Avogadro's number  where Avogadro's number = 6.022 X 1023

Q: Which of the following has the largest moles of oxygen per mole of the molecule?

A: 1 mole of any substance = avogadro number of particles                                          =…

Q: Hello,  What is the connection between Avogadro's number and the Mole? Please provide an example.

A: Avogadro number is number of unit in one mole of any substance.

Q: What is the mass in grams of a single atom of Mo? Enter your answer in scientific notation.

A: 1 mol of any substance contains Avogadro number of particles of that substance. Molybdenum is an…

Q: TNT as shown in figure is used as an explosive in con-struction. Calculate the mass of each element…

A: The molecular formula for TNT is C7H5N3O6 . Given mass of TNT = 1 lb = 453.592 gms Molar mass of TNT…

Q: A sample of phosphorus with a mass of 0.500 g is ignited to produce phosphorus oxide in a stream of…

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Q: Ethylene glycol contains 38.7% carbon, 9.7% hydrogen, 51.6% oxygen, and a molar mass of…

A: First of all we will calculate the empirical formula by dividing percentage mass by their atomic…

Q: Problem attached

A: Moles of the given compound for each atom can be calculated as follows: n=mM where n: number of…

Q: A molar mass value is equivalent to any element's

A: From given  Molar mass is the mass of 1gram mole molecule.

Q: COlumn s the mass of this

A: Given as, T=30oC Now, T=30+273T=303ok

Q: How many grams of the insecticide calcium chlorate must be measured if a sample is to contain 5.79 g…

A: Formula of calcium chlorate = ca(clo3)2 Molecular mass of calcium chlorate is 207g

Q: How many Zinc atoms are in 100g sample of Zinc?

A: Number of atoms in the given sample of an element are calculated by using the molar mass of the…

Q: %. Calculate the mass of nitrogen requ

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Q: The molar mass unit is gram per litter t true False

A: Explanation to the correct answer is given below

Q: An unknown compound has the following chemical formula: where x stands for a whole number.…

A: Given molecular formula: PxCl5 Moles of P = 9.9 mol Moles of Cl = 49.60 mol

Q: moles of electrons can

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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.