What is the average mass of the tin in the sample?

Q: . How many oxygen atoms are in 76.3 g N2O4? Conversion must be set-up in one step using dimensional…

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Q: 4. Find the mass of 3.66 mol of N2, nitrogen gas.

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

Q: A block of pure magnesium metal weighs 76.9 grams. How many moles of magnesium are present in the…

A: Mole= mass of Mg / molar mass of Mg Given - 1) mass of Mg =76.9              2) Molar mass of Mg=…

Q: A 2.00 g sample of an organic compound contains 0.675 g of carbon. How much carbon would a 4.00 g…

A: ◼️ Given that:  2.00 g of organic sample has 0.675 g Carbon  Carbon in 4.00 g of same organic…

Q: How many moles of Phosphorus are present in 114.95 g of Phosphorus?

A: Given, mass of Phosphorus = 114.95 g Molar mass of P = 30.97 g/mol

Q: A student weighs out 94.53 grams of sodium permanganate, NaMnO4.  How many moles of NaMnO4 is this?…

A: Moles— It is the ratio of given mass of a compound to its molar mass  Mole = given mass / molar mass…

Q: What is the mass of 1.33 moles of NO?

A: Number of moles = Mass/ Molar Mass Molar mass of NO = 30g/mol Number of moles = 1.33

Q: The molar mass of boron is 10.81 g/mole. What is the mass of a single boron atom?

A: Given, Molar Mass of Boron is 10.81 g/mol. General formula is: 1 mole = 6.023 x 1023 atoms.

Q: How many atoms of Cu are present in 35.4 g of Cu?

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Q: I was looking over and was doing calculations so I could understand and no offense but shouldn't the…

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Q: 5.00 g of a compound containing nitrogen and oxygen was decomposed and 1.52 g of nitrogen was…

A: Given: Mass of compound = 5.00 g  Mass of Nitrogen produced=1.52 g  Molar mass of nitrogen = 28…

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below.…

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Q: A compound that contains only copper and chlorine contains 2.363 g copper and 2.637 g chlorine. What…

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Q: How many atoms are present in 0.430 g of gold?

A: Given, mass of Gold = 0.430 g  Molar mass of Gold = 196.97 g/mol Number of Atoms = ?

Q: Suppose you have a sample of sodium weighing 12.40 g. How many atoms of sodium are present in the…

A: A: 3.25 x 1023 atoms of sodium B: 21.1 g of potassium

Q: What percent by mass of iron(II) phosphate is iron?

A: The molecular formula of Iron(II)phosphate is Fe3(PO4)2. Percentage by mass of any component can be…

Q: Sea salt is formed by natural evaporation of ocean water and contains 98% sodium chloride. The…

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Q: A 5.00 g mixture of potassium sulfide and potassium chloride contains 2.80 g potassium. What…

A: The mass percentage is calculated using the formula given below: Mass percentage =mass of potassium…

Q: mass of 1.2 × 10^23 atoms of phosphorus (molar mass= 31 gm/mo

A: The one mole of a substance contains 6.022×1023 number of its atoms.here moles of…

Q: What is the mass of 1.761 × 10^8 mol S? Answer in units of g.

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Q: What is the percentage by mass of a silver ring that has a mass of 12.0 g and contains 11.1 g of…

A: Total mass of the silver ring = 12g  Mass of pure silver in the ring = 11.1g  Formula to find the…

Q: Define percentage by mass

A: Percentage by mass is defined as the ratio of mass of solute by mass of solution (solute+solvent)…

Q: How many grams of calcium chloride will be produced when 31.0 g of calcium carbonate is combined…

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Q: What is the mass ( in kilograms) of the average molecule of carbon dioxide?

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Q: You have 15.31 g of an unknown compound. Through analysis, you have determined that this sample…

A: Mass percent can be calculated as follows:

Q: Can the mass of one mole of sample A be the same as the mass of one mole of sample B? Explain your…

A: 1 mole of any substance contains 6.023 × 1023 molecules, atoms or ions.

Q: How many CHCl3 molecules are there in 24.5 gg of CHCl3.

A: The molar mass of CHCl3 is 119.5 g/mol. That is 1 mole has 119.5 g. We know that one mole has…

Q: How many moles of copper are in a 13 cm piece of wire weighing 1.109 grams?

A: The number of moles of any substance is defined as the ratio of given mass of that substance to that…

Q: 4.25 x 1024 atoms N converted to grams

A: We have given the atoms of nitrogen = 4.25 × 1024 atoms Avogadro's constant = 6.022 × 1023…

Q: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Percentage composition of an element is calculated from its molecular mass. Percentage composition…

Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28g of carbon and…

A: Percent composition of the compound is described as the percent of mass of each component of the…

Q: Calculate the mass percentage of oxygen in the organic molecule whose line structure is shown below.…

A: The formula of the above mentioned organic molecule is : C18H34O2

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.