A sample of chlorine has a mass of 49.4 grams. How many Cl atoms are there in the sample?  atoms How many Cl2 molecules are there in the sample?  molecules

Q: The density of carbon tetrachloride is 1.59 g/mL. How many chlorine atoms are present in 55 mL of…

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Q: The formula for disulfur decafluoride is S2F10 . a. How many molecules are in 1.57 grams of disulfur…

A: a) Given: 1.57 g of S2F10. The no of molecules are determined as follows,

Q: Calcium chloride is 36.11% calcium. How many grams of calcium are present in 2.55 x 103 g of calcium…

A: The mass percent of the calcium in calcium chloride is = 36.11 % The mass of calcium chloride is =…

Q: Complete the table. Number of Particles (atoms Substance Mass Moles or molecules) Ar 4.5 x 10-4 NO2…

A: Ar : Mass of Ar = moles x molar mass                   = 4.5 x 10-4 x 40                   = 1.80 x…

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given -> CaCO3(s) -----> CaO(s) + CO2(g)  Weight of sample = 2.237 gm  Weight of CO2 formed =…

Q: The atomic mass of Cl is 35.45 amu, and the atomic mass of Al is 26.98 amu. What are the masses in…

A: The atomic mass is defined as the mass of an atom of a chemical element expressed in atomic mass…

Q: Which one is a FALSE statement? O The chemical formula CuBr2 indicates that this compound is…

A: We have to predict the false statement.

Q: a. What is the mass in grams of 1.75 × 1024 atoms of silicon? grams b. How many silicon atoms are…

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Q: How many molecules of hydrogen chloride (HCI) are there in 25.0 g of hydrogen chloride? (Given: H=…

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Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: The density of water is 1.00 g/mL at 4°C.How many water molecules are present in 2.36 mL of water at…

A: given density of water = 1 g/ml

Q: 5. A bottle of Ibuprofen (C,,H,,O,) contains 1.204 x 1024 molecules. How many grams of ibuprofen are…

A: The molecular weight is 206.29 g/mol means 1 mol of ibuprofen = 206.29 g of ibuprofen

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: Calculate the number of atoms in 12.45 grams of iron . 1.342 x 1023atoms 1.342 x 1022toms 0.223…

A: The question is based on mole concept. We have to calculate number of atoms of iron.

Q: If atoms of magenesium (Mg) and atoms of 10 chlorine (Cl) could bump into each other, could they…

A: Whether they combine to form any substance has to be determined The number of molecules would be…

Q: mass in grams of  1.74 x 10^24 atoms of beryllium

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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: The atomic mass of Cl is 35.45 amu, and the atomic mass of Al is 26.98 amu. What are the masses in…

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Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: A pure substance has a definite chemical composition. A pure substance can be an element or a…

Q: Molar mass of nitrogen (N2) is 28 g/mol. If 3.2 x 1023 molecules of nitrogen is in a container, how…

A: Number of molecules in 1 mole = Na = 6.02 x 1023  Number of moles of nitrogen gas(n) = 3.2 x 1023/Na…

Q: For each of the following gemstones, determine the mass of compound present in the given moles of…

A: Given  1) Formula = Be3Al2(SiO3)6     Number of mole = 0.0170 mole        mass    = ? 2) Formula   =…

Q: %3D The mass of 2.21 x 1040 atoms of iron (molar mass = 55.845 g/mol) is O 2.78 x 104 g. 2.05 x 102g…

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Q: What is the mass, in grams, of 1.67 x 10^15atoms of Mn

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Q: The formula for boron tribromide is BBr3. How many molecules are in 7.83 grams of boron tribromide?…

A: Given Compound BBr3=250.52g/mole Using mole concept Mole= given mass (g)/Molar mass of BBr3 Moles…

Q: How many ATOMS of phosphorus are present in 8.70 grams of phosphorus triiodide ?  atoms of…

A: Data given: Mass of phosphorus triiodide = 8.70 g Number of molecules of phosphorus triiodide =…

Q: What is the mass of 1.89x10^23  atoms of chlorine?

A: Mass of 1 mol Cl = 35.453 g  Mass of 1 mol Cl2 = 70.906 g  1 mol contains = 6.022 × 1023…

Q: 1. A sample of acetic acid has 5.82x10^25 molecules. How many grams of oxygen are present?

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

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 60.9 g of oxygen. Calculate the mass of the…

A: Sample of trifluoroacetic acid molecular weight                          = (12× 2+ 1+ 3×19+ 16×2) g…

Q: How many molecules are in 6.26 grams of sulfur dioxide? ______ molecules What is the mass in grams…

A:

Q: The formula for boron trichloride is BCl3. A. How many molecules are in 9.31 grams of boron…

A: Molecular formula of Boron trichloride is BCl3. It has three Chlorine atom and one boron atom. Molar…

Q: how many moles of fluorine are present?

A: 1 mol = 6.022 × 1023 atoms  Number of moles = mass/molar mass  Mass = number of moles × molar mass…

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

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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…

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.