91. Calculate the mass in grams of each of the following samples. a 10,000,000,000 nitrogen molecules b. 2.49 X 1020 carbon dioxide molecules c 7.0983 moles of sodium chloride

Q: What is the mass (in grams) of 2.40 x 1024 CS2 (tear gas) molecules? [Note: Molar Masses (g/mole): C…

A: Atomic mass of C = 12 g mol-1 Atomic mass of S = 32.1 g mol-1 Number of CS2 molecules = 2.40 × 1024

Q: Mass of crucible and cover is 43.92 g. The mass of crucible, cover, and magnesium is 44.62g. Mass of…

A: Empirical formula is the chemical formula  which represents the simple ratio of atoms of constituent…

Q: What are three errors that could cause one of your mass percentages to be too high?

A: Mass percent or weight percent of a solution is the mass of the solute by the mass of the solution…

Q: (a) Calculate the number of moles of C and H present in the compound. (b) Find the mass percentages…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Calculate the number of moles in 0.41 g titanium.

A: The number of moles in 0.41 g titanium is to be calculated

Q: Calculate the mass (in g) of sample. 1 water molecule

A: Given, 1 water molecule

Q: If a sample of barium hydroxide has a mass of 5.190 g, determine the number of moles of the compound…

A:

Q: Determine the mass in grams of 6.07 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A:

Q: A sample of the compound shown below contains 5.22 g of nitrogen. How many grams of oxygen does it…

A:

Q: What is the percent by mass of hydrogen in sulfuric acid

A: Molar Mass of H = 1 g/mol Molar mass of H2SO4 = 98 g/mol

Q: determine the mass (g) of carbon in 16.55 g of glucose. Plan To find the mass of C in the sample of…

A: We know that, Molecular mass of glucose, C6H12O6 = 180.156 g/mol Number of Carbon atoms in glucose =…

Q: Explain how you can use the mole number (6.02 x 1023) to count atoms.  Answer in complete sentences.…

A: According to Avogadro's law for mole concept, one mole of any substance contains number of atoms…

Q: Determine the mass, in grams, of 0.445 moles of Mn (1 mol of Mn has a mass of 54.94 g). with the…

A: The amount of moles in a substance can be determined by using its Molar mass. The molar mass is the…

Q: An organic compound weighing 0.6827 g is decomposed, giving 0.2095 g carbon and 0.08436 g hydrogen.…

A: Given the total mass of organic compound = 0.6827 g mass of C = 0.2095 g mass of H = 0.08436 g

Q: A substance has a molecular mass of 143151 u. Find the mass of one molecule of this substance.

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

Q: Mass/Mole Conversions: 1. Find the mass of 0.89 mol CaCl2, calcium chloride.

A: We know that , Moles of substance = Mass of substance / molar mass of substance   By using this we…

Q: Calculate the number of moles in the sample and iron atoms in the sample.

A: Given :- mass of iron = 15.7 g  To calculate :-  moles of iron  number of atoms of iron  number of…

Q: Determine the mass in grams of 6.26 × 1021 atoms of arsenjc. (The mass of one mole of arsenic is…

A:

Q: Copper(II) fluoride contains 37.42% F by mass. Calculate the mass of fluorine (in g) in 55.5 g of…

A:

Q: A new computer chip contains 4.71×1022 Si atoms. Determine the mass (in grams) of the silicon…

A: 1 mole of any substance contains avagadro number of atoms i.e.6.022×1023 atoms.  6.022×1023 atoms of…

Q: 10. A sample of a pure compound contains 12.23 g of nitrogen and 15.01 g of oxygen. The molar mass…

A:

Q: A 0.77-mg sample of nitrogen reacts with chlorine to form 6.61 mg of the chloride. Determine the…

A: Mass of Nitrogen reacted = 0.77 mg Mass of Chlorine reacted = 6.61-0.77 =5.84 mg Dividing each of…

Q: How many moles are in 7.5 x 1019 molecules of ammonia, NH3?

A: Since we know that  1 mole of any substance = 6.022×1023 molecules Here,        6.022×1023 is the…

Q: Consider 1.00 g of Copper (Cu) metal. How many Cu moles are present in this sample? How many Cu…

A: Since moles of element = mass of element / Atomic mass of element  Atomic mass of Cu = 63.5 g/mol…

Q: A certain compound contains only three elements: carbon, hydrogen, and chlorine. A sample of the…

A:

Q: Without using a calculator, which has the greater mass: One mole of carbon atoms or one mole of…

A:

Q: Determine the mass in grams of 4.38 × 10²¹ atoms of chromium. (The mass of one mole of chromium is…

A:

Q: A compound contains carbon, hydrogen, and nitrogen as its only elements. A 9.353 g sample of the…

A: Given that the mass of C and H in a compound of mass 9.353 g is 5.217 g and 1.095 g respectively.

Q: What is the molar mass of magnesium phosphate? A. 310 grams / mole B.263 grams / mole C.71.3…

A: 1- First we will see the molecular formula :  Magnesium ion  : Mg2+  Phosphate ion : PO43-  Both are…

Q: An unknown sample with a total mass of 440.85 g contains carbon, hydrogen, and oxygen.  If the…

A: Given: The total mass of the unknown sample = 440.85 g The mass of carbon = 300.25 g The mass of…

Q: moles 12.00

A:

Q: 22) A sample has a molar mass of 143 g/mol, identify the sample. A) ACCI B) AuCI C) AGCI

A: Molar mass of any molecule is given as the sum of the atomic masses od each of the constituent…

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: 7.) How many molecules of H, are present in 7.5 grams of H,?

A: Since there are multiple questions, I am only solving the first one. If you want the other question…

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: Consider a 15.0-g sample of a potassium salt. This compound is 32.86% by mass of potassium.…

A:

Q: 6. The percent composition of a compound is 35.20% phosphorus and 64.80% fluorine. What is the…

A: Given  % of P     = 35.20 %  % of F     = 64.80 %  Empirical Formula  = ?

Q: Avogadro's number: a. Changes depending on the quantity that's being measured b. Is equal to the…

A: Avagadro number is equal to 6.022 x 1023 (atoms or ions or molecules) per mole of that ( element or…

Q: The volume of a sample of copper is 7.14 mL.  The density of copper is 8.9 g/mL. How many moles of…

A: It is given that the volume of a sample of copper is 7.4 mL and the density of copper is 8.9 g/mL,

Q: 9. How many moles of phosphorus are in 16.2 moles of aluminum phosphate?

A: Given,

Q: A newly synthesized compound has the molecular formula ClF2O2PtF6. Compute, to four significant…

A:

Q: How many grams of F are in 325 g CaF, ? mass: g

A: Calculate number of gram of F in CaF2 ?

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: A 2.33 mole sample of a substance weights about 137 grams. What is the substance

A: 137/2.33 = 58.79  Nearly equal to the mass of NaCl.

Q: A compound is known to contain 65.44% carbon and 19.36% oxygen by mass. Each molecule contains two…

A: In a 100 g of compound, 65.44% carbon and 19.36% oxygen is present by mass. By determining the…

Q: 35. Calculate the mass in grams of each of the following samples. a. 1.25 moles of aluminum chloride…

A:

Q: Determine the mass, in grams, of 0.295 moles of Mn

A: Given :- number of moles of Mn = 0.295 mol  To calculate :- mass of Mn (in g)

Q: Complete the following table for citric acid, C6H8O7 , the acid found in many citrus fruits.

A:

Q: When percentages are given, assume that the total mass is 100 grams to determine the mass of each…

A: Given % of H = 4.8% Mass of unknown sample = 100g

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.