A crime scene investigator finds a 3.5 g (C10H14N2) sample of nicotine and sends it to the lab for analysis. You are the forensic scientist tasked with answering the following questions. a) What is the molar mass of nicotine? b) How many moles of nicotine are in the sample? c) How many molecules of nicotine are in the sample? d) How many carbon atoms are in the sample?

Q: A sample of monochloro tetraborane (10), B4H9Cl, contains 2.5 mol of the compound. Determine the…

A: The objective of the question is to determine the amount in moles and the number of atoms of each…

Q: 11.6 g Fe2(SO4)3  contains how many grams of sulfur?

A: The compound given is Fe2(SO4)3  Hence molar mass of compound = Atomic mass of Fe X 2 + Atomic mass…

Q: Question attached

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Determine the number of moles (of molecules or formula units) in sample. 155.2 kg Na2SO4

A: Record the given data, The given mass of Na2SO4 is 155.2 kg which is converted to grams as 155.2 x…

Q: Determine the number of each type of atom in formula. CuSO4

A: Given: CuSO4

Q: Write a sentence that describes how to determine the number of moles of a compound in a known mass…

A: Moles of any substance is defined as the 6.022 X 1023 molecules of the substance.

Q: 80 grams of sodium hydroxide contains how many molecules?

A:

Q: How many Fluoride atoms are in 3.0 moles of sulfur hexafluoride molecules

A: The objective of the question is to find out the number of Fluoride atoms in 3.0 moles of sulfur…

Q: How many bromine atoms are contained in 8.94 moles of bromine molecules?

A: Given :-  Number of moles of Br2 = 8.94 mol  To be calculated :-  Number of Br atoms

Q: The formula for rust can be represented by Fe,O3. How many moles of Fe are present in 21.6 g of the…

A:

Q: a sample of hydrate sodium acetate is analyzed and determined to contain 4.27 g of water. how many…

A:

Q: a) How many molecules are present in 5.32 moles of chalk (CaCO3)? b) How many oxygen atoms are…

A:

Q: ruthenium chloride contains 48.72% ruthenium and 51.27% chlorine by mass. what is the empirical…

A: mass % of ruthenium (Ru) = 48.72 % = 48.72 gmass % of chlorine (Cl) = 51.27 % = 51.27 gEmpirical…

Q: Moles of Mass of A atoms Divide by molar mass A atoms A to X Divide by mole ratio Convert ratio to…

A: Empirical formula: It is the formula that is used to represent the proportions of all the elements…

Q: How many MOLES of tetraphosphorus decaoxide are present in 4.12 grams of this compound?   How many…

A: Please see the attached image for the solution.If there are queries, please do not hesitate to ask.…

Q: Determine the number of moles of H in each sample. 4.53 mol H2O 9.35 mol NH3

A: Here we are required to determine the number of moles of H in each sample.

Q: A mystery compound has a molar mass of 28.1 g/mol. How many moles is 98.4 g? Do not put any units in…

A:

Q: a. How many ATOMS of boron are present in 4.74 grams of boron trifluoride? atoms of boron. b. How…

A: Note: As per the guidelines, solution of first question has been made. For the expert solution of…

Q: If you measure out 44.0 grams of KCL, how many moles of KCl are present when the formula mass is…

A: given: mass of KCl = 44.0 grams molar mass of KCl = 74.55 g/mol we need to find out the moles of KCl…

Q: Use the References to access important values if needed for this question. How many MOLECULES of…

A:

Q: Calculate the molar mass of a compound if 0.460 mole of it has a mass of 385.0 g.

A: Given :-  No.of moles of compound = 0.460 mol  Mass of compound = 385.0 g  To calculate :-  Molar…

Q: Calculate the molar mass of a compound if 0.400 mole of it has a mass of 308.0 g.

A: Given :- no.of moles of compound = 0.400 mol  Mass of compound = 308.0 g  To calculate :-  Molar…

Q: How many molecules are in 21.9 moles of CCl₄?

A:

Q: a) What is the simplest formula of a compound if a sample of the compound contains 0.273 mol X,…

A: a) Given, moles of X = 0.273 mol moles of Y = 0.819 mol moles of Z = 0.546 mol Simplest formula of a…

Q: this question. What is the mass of a dioxygen difluoride molecule ? grams

A: Mass of a molecule can be defined as the sum of masses of atoms present in that molecule. It is…

Q: Phosphorus pentachloride is a white solid that has a pungent and unpleasant odor. Determine the…

A: Step 1:Step 2:Step 3:

Q: 22) An 85.5-g sample of Hg in a barometer 23) A 0.251-g Ti metal heart valve 24) A 10.0-g sample of…

A: 22) Given: Mass of Hg = 85.5 g Atomic mass of Hg = 200.59 g/mol.

Q: 21) Write a sentence that describes how to determine the number of moies of a compound in a known…

A: Given : moles of a compound. To find : How calculate the number of moles of a compound. Solution: As…

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: Calculate the number of moles present in the 48.4 g of a KCl sample. A)Number of moles of KCl is…

A: The number of moles of a given species in the given sample is calculated by the expression (1). In…

Q: Enter your answer in the provided box. The formula for rust can be represented by Fe,O3. How many…

A: Given;

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: Determine the number of moles (of molecules or formula units) in sample. 25.5 g NO2

A: The given mass of NO2 = 25.5 g Molar mass of NO2 = 46 g/mol.

Q: Determine the number of moles of oxygen atoms in sample. 4.88 mol H2O2

A: The mole is defined as the unit of measurement for the amount of substance that can be expressed in…

Q: Consider a 10.1 g sample of the compound cesium phosphate. a) What is the chemical formula for…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: How many MOLECULES of dioxygen difluoride are present in 9.22 grams of this compound ?

A: We know, 1 mole of a compound contains 1 Avogadro number of molecules, where 1 avogadro number =…

Q: How many molecules are found in 16 ounces of propane with a mass of 453 g?

A:

Q: How many moles of sodium hydroxide are needed to neutralize 1.44 moles of sulfuric acid?

A: Given :- No.  of moles of H2SO4 = 1.44  To calculate :- No. of moles of NaOH     When an acid reacts…

Q: How many grams of the nonmetal are in compound C?

A:

Q: A water bottle contains 54 g of water. How many water molecules are contained in the bottle?

A: Given data is as follows: The mass of the water = 54 g The molar mass of Water (H2O = 18 g/mol As we…

Q: Use compound formulas to determine element composition. A sample of pentanol, C5H120, contains 1.69…

A:

Q: How many carbon atoms are in 8.79 moles of Decane?

A: Decane has the structural formula - C10H22

Q: How many molecules are in 325 grams of iron chloride

A:

Q: How many molecules are in sample? 119.78 g C4H10

A:

Q: PCI3) has a mass of 50.5 g.

A: Molar mass of PCl3 = mass of P + 3( mass of Cl )  Molar Mass of PCl3 = 40gmol-1 + 3 • ( 35.45 gmol-1…

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.