Calculate the number of moles and atoms/molecules from the following:          a. 67.83 grams of H2O       moles _____________                     Molecules _________________         b. 125.0grams of PCl3       moles _____________                     Molecules_________________

Q: Determine the number of moles present in a 1000 g gold bar. Round off your answer to the nearest…

A: Mass of gold = 1000g We have to determine the no. of moles present in 1000g of gold bar.

Q: A 2.25 g sample of Ammonium carbonate contains how many moles of ammonium carbonate? Molecules of…

A:

Q: person

A: Molar mass of water = 2 • ( molar atomic mass of H ) + molar atomic mass of O  Molar mass of water =…

Q: The average cup of coffee contains about 125 mg of caffeine, C3H10N O. Caffeine is also found in…

A: The chemical formula of caffeine = C8H10N4O2 Moles are calculated by the formula,       Moles=Given…

Q: Part B: NazCO; Reaction: 1. Determine the experimental mole-to-mole ratio of NazCO3 to NaCl from…

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

Q: SEP Use Mathematics Calculate the number of moles in 75.0 g of dinitrogen trioxide.

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

Q: How many moles of methane (CHA) are in 20.0 grams of methane? 20.0 moles 16.0 moles 1.25 moles

A: Moles is defined as the amount of substance that contains same number of particles as contain in 12…

Q: Given that the number of moles in calcium carbonate used 8.93x10-4 mol. Calculate the mass of the…

A: The given data contains, number of moles of CaCO3=8.93×10-4moles.

Q: Solid lithium hydroxide is used in space vehicles to remove exhaled carbon dioxide from the living…

A: Mass of Lithium Hydroxide = 1 Kg  No of moles of LiOH = ?

Q: How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride?

A: Formation reaction of NaCl from Na and Cl2 is : 2Na + Cl2 ......> 2NaCl Given that: Moles of NaCl…

Q: 2Al(s) + 3Br2(l) ->  Al2Br6(s) How many moles of Al are needed to form 2.43 mol of Al2Br6 ?

A: Mole to Mole Relationship:In these problems the moles of one of the Reactants / Products is to be…

Q: When doing a dilution, the concentration should go (up / down / stay the same). The total number of…

A: Molarity = no.of moles of Solute/volume of solution in L

Q: Selective serotonin reuptake inhibitors (SSRIs) are commonly prescribed antidepressants. SSRIs block…

A: We know that, Molar mass of H = 1.00784 g/mol. Molar mass of C = 12.0107g/mol Molar mass of N =…

Q: Design a flowchart that could be used tohelp convert particles to moles or moles to particles.

A: A flowchart that could be used to help convert particles to moles or moles to particles is given…

Q: A student measures out 12.1 grams of magnesium chloride. How many moles does he or she have?

A: Given Mass of magnesium chloride = 12.1 g Standard value  Molar mass of magnesium chloride…

Q: Show all work for all parts of the question for full credit and use your units. Use 2 decimal places…

A: Interpretation -  For KNO3 ,  what is the molar mass - To determine the percentage composition in…

Q: thimble of water contains 4.0×1021molecules. The number of moles of H2O is?

A: Moles =molecule/6×1023 Moles= 4×1021/6×1023 Moles= 0.66×10-2

Q: Mole Ratios 1. Name, Given: C₂Hs + 5023CO₂ + 4H₂O What is the mole ratio C₂Hs to O₂? 1:5 moles How…

A: According to Bartlby guidelines I solve only first question. You post other questions separately.

Q: how to calculate moles

A: Calculation of molesFormula,moles = mass (g)/molar mass (g/mol)

Q: Determine the number of carbon atoms in a 381 mg tablet of acetaminophen (C3H9NO2). Given: Molar…

A: Given: Mass of C8H9NO2 = 381 mg = 0.381 g                  (Since 1 g = 1000 mg) And molar mass of…

Q: 26. Write the formula for oxygen gas. 27. How many atoms (and moles) are represented by the formula…

A: 26. Oxygen is a diatomic gas and the molecular formula of oxygen gas is O2  One mole of oxygen gas…

Q: Given the equation 2 NH3 --> N2 + 3 H2, convert 5.46 mol N2 to moles of H2. Round to the nearest…

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Q: Aluminum, silicon and oxygen form minerals known as aluminosilicates. How many moles of aluminum are…

A: General formula of Mica: X2Y4-6Z8O20(OH, F)4 Number of Aulminium per mole of mica: 8 Chemical…

Q: How many moles are present in 35.16 grams of X? (Assume that the molar mass of X is 18.42 grams per…

A: Mass of X = 35.16 grams Molar mass of X = 18.42 grams / mole

Q: Data Report Sheet: Preparation of Copper (I) Chloride Mass of Copper Foil 1.0762 Moles of Copper…

A:

Q: A flask contains 3.75 moles of hydrogen gas. How many hydrogen molecules are present in the flask?…

A: We are having 3.75 moles of hydrogen gas. Hydrogen gas exists as H2 molecule.

Q: How many moles are in 4.5 moles of CCl4

A: Number of moles of CCl4 = 4.5 mole

Q: A reaction created 27 moles of water. How many molecules of carbon dioxide are also created?

A: In the given question we have to calculate the moles of Carbon dioxide produce along with water…

Q: Suppose that a compound containing copper and chlorine contains 0.01044 moles of copper and 0.01517…

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Q: Each copper (II) sulfate unit is associated with five water molecules in crystalline copper(II)…

A: Given : Mass of blue compound = 17.26 grams Mass of anhydrous form = 13.01 grams

Q: Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction:…

A: The given reaction is:

Q: For the molecular compound silicon dioxide, what would you multiply "grams of SiO2" by to get the…

A:

Q: A compound of bromine and fluorine is used to make UF6, which is an important chemical in processing…

A: Mass percentage of bromine is 58.37% Moles of bromine and flourine and emperical formula is…

Q: Mass (g) Moles Moles Mass (g) of A of A of B of B 1 mole Moles of B Molar mass of B Molar mass of A…

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Q: A) Calculate the percent of oxygen by mass in iron(III)oxide. B) Calculate the number of grams of…

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Q: According to the following reaction: 2NO (g) + 2H2 (g) →N2 (g) + 2H2O (1) What would you multiply…

A: The stoichiometric coefficients of a reaction indicates the number of moles of reactants and…

Q: How to convert ML to moles? I have 10.61 ml of NaOH How do I convert it to moles?

A:

Q: 4. ocean water contains 3.4% sodium chloride by mass. How much salt can be obtained from 346.8 g of…

A: Given: Percentage of NaCl= 3.4% Mass of sea water= 346.8g To find: The mass of salt

Q: Finding moles and grams and % of KCIO3 in unkown using data collection

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Q: An alloy is made up of two metals: tin and lead. If the wt% of tin is 12.66 % calculate the mol% of…

A: We have to calculate the mol% of lead.

Q: Chemical Formula Molar Mars Number of Moles Subrtance Mass (9) of atoms or moleculen Soda Pop Can Al…

A: Soda pop can : Chemical formula- Al Molar mass- 27 gmol-1 Steel Iron wool: Chemical formula- Fe…

Q: moles

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Q: ny moles

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Q: In the gaseous state chlorine exists as a diatomic molecule Cl2 (molar mass=70.9g/mol). Calculate…

A: Given that in In the gaseous state chlorine exists as a diatomic molecule Cl2 (molar mass=70.9g/mol)…

Q: According to the following reaction: 12HCIO4 (aq) + P4010 (s) –→ 4H3PO4 (aq) + 6CI207 (1) What would…

A: Number of moles = mass/molar mass  The total number of moles of a particular product formed will…

Q: How many grams of H2SO4 are present in 1.9*104º formula units of H2SO4 ? Round your answer to 1…

A: Given data: The formula unit of H2SO4=1.9×1026. To find: The grams of H2SO4 present.

Q: According to the following reaction, how many moles of mercury(II) oxide are necessary to form 0.457…

A: The given reaction is  2 HgO(2) -> 2Hg(1) + O2 (g)  0.457 mol of O2 is given

Q: For the molecular compound phosphorus triiodide, what would you multiply "molecules of PI3" by to…

A: Answer: 1 mole PI3 =6.02 x 1023 molecules PI3 Molecules of PI31 mole PI36.02 x 1023 molecules PI3

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.