Moles of Chalk  Problem : How many moles of chalk does it take to write your name ? Hypothesis: i predict that it will take_________________moles of chalk to write my name . Brainstorming space: (what you need to know/ figure out in order to give a good hypothesis) Procedure: (please write a list of steps that you will follow to figure out the answer)

Q: ow many MOLES of ammonium chromate are present in 2.14 grams of this compound ? moles

A: Atomic mass of N= 14 g/ molAtomic mass of H =1 g/molAtomic mass of Cr =52 g/ molAtomic mass of O= 16…

Q: An 8-ounce glass of water contains 24.7 moles of hydrogen. How many hydrogen atoms do you drink per…

A: Answer :-  1.49 × 1025 hydrogen atoms.…

Q: 7. How many grams of silver sample is equal to 0.0417 mole of silver The answer is

A: given, the number of moles of silver, Ag = 0.0417mole

Q: How many moles of carbon dioxide are in 211 g of Carbon dioxide? 4.8 4.79 (with margin: 0)

A:

Q: Mole problem (Chemistry), Please show all calculations: How many moles of carbon tetrafluoride are…

A: Given - - > Mass of carbon tetrafluoride = 1.55 * 105 kg Molar mass of carbon tetrafluoride = 88…

Q: Use the References to access important values if needed for A sample of chlorine contains 24.3…

A: Elemental form of chlorine is Chlorine gas i.e. Cl2 A mole of Cl2 contains two moles of Cl. Atomic…

Q: None

A: If we have 1 L (litre) water And Water density is 1 Kg/LMass of water is = density of water * volume…

Q: . How many atoms are in 3.4 moles of Copper sample? b.How many Cr3+ ions in 1.75 mol of Cr2O3…

A: a) Given: moles of copper = 3.4 mol.

Q: Convert between mass and moles of a compound. Use the molar mass of iron(II) nitrite, 147.9 g/mol,…

A: It is based on the mole concept Here we are required  to find the moles  of iron nitrite  present in…

Q: Question 1 ( How many moles of sulfur ions are in 48 mol sample of Sodium sulfide? Enter your answer…

A: It is based on the concept of mole.Here we are required to find the Moles of sulphur ions present in…

Q: Q2 Calculate the moles of magnesium in 1.25 grms of magnesium. Q2a.Use the mole of magnesium in…

A: Moles from the given mass can be determined by using the formula as; Moles=Given massMolecular mass…

Q: 1. How many MOLES of sulfur tetrafluoride are present in 1.02 grams of this compound ? moles. 2. How…

A:

Q: 1. NANOS Element # atoms Atomic mass (g/mol) Total (g/mol) Na Total Molar mass 2. LIAIH, Element #…

A:

Q: 1.ln the preparation of aspirin, 6.0 grams of salicylic acid was made to react with acetic anhydride…

A: Solving only first question in accordance with the guidelines. We will write equation and then…

Q: Determine the mass of 1.2 * 1025 molecules of carbon dioxide.

A:

Q: f you have a 456 g sample of KMnO4, how many formula units of KMnO4 are in the sample? Answer in…

A: Given : Mass of KMnO4 = 456 g

Q: PROBLEM SOLVING. Show all pertinent computations Express final answer up to the fourth decimal…

A: Solution: We have law of conversion of mass which clearly indicates mass of the products equal to…

Q: 1. Thought Question: Determine the % composition of each element in the following compound. Al(NO;)3…

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

Q: 1. How many MOLECULES of sulfur dioxide are present in 1.31 moles of this compound ? molecules. 2.…

A:

Q: 6. How many moles of particles are present upon dissolving one mole of each of the compounds below?…

A: upon disolving ionic compounds dissociates into its ionic form where as non ionic do not diisociate…

Q: Question 7) A vat holds 25 pounds of ethanol. How many moles of ethanol does the vat contain? Round…

A:

Q: DON'T use Ai for answering this

A: In doing the calculations, here are the steps: Step 1: Convert the mass of ammonium carbonate to…

Q: v moles a

A:

Q: Calculate the mass need to weigh out of AsBrs, if you want 5.40x1025 atoms of As. Report answer with…

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Q: None

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Q: rainstorming space: (what you need to know/figure out in order to give a good hypothesis).…

A: Suppose:- Thickness of aluminium foil is = 1cm Width of aluminium foil = 2cm Length of aluminium…

Q: How many moles are present in 10.0 grams of sodium hydroxide (NAOH)? moles

A:

Q: Calculate the mass in grams of 0.167 moles of lithium hydroxide.  Report your to answer to 2 decimal…

A:

Q: A Question 17 Convert 0.1 g of sulfur to moles. Round the molar mass to the nearest whole number.…

A: No. of moles of a substance can be calculated by dividing the mass of the substance with the molar…

Q: I juat dont know how to approach number 85.  They dont give a temp.  Do i assume , say, 273 kelvn to…

A: The flask contains hydrogen and nitrogen gas that are separated by a stopcock fitted in between the…

Q: Use the equation below to determine the limiting reactant. Mg (s) + 2 HC1 (aq) → MgCl, (aq) + H2 (g)…

A: To solve this problem we have to consider the    stoichiometric ratio of  given   balanced chemical…

Q: 4) 9.3 mol Au

A: 1 mole of any species contain avogadro number6.022×1023 of particles. Given species is 9.3 mol Au We…

Q: How many moles are in 9.50 g of CO,?

A: Given :- mass of CO2 = 9.50 g  To calculate:- number of moles of CO2

Q: USE e Relerences to sccess important values if needed for this questiom. What would you multiply…

A: To Find: TTo find what would you multiply "grams of aluminum"  to get the units "moles of aluminum".…

Q: Na2CrO4: ________ g/mole

A: Standard data: The atomic mass of sodium (Na) = 22.9898 u The atomic mass of chromium (Cr) =…

Q: 4. Calculate the molar mass of aluminum nitrate, Al(NO3)3. g/mol Your answer should be rounded to…

A: Atomic masses Atomic mass of Al=26.982g/mol Atomic mass of N=14.007g/mol Atomic mass of…

Q: Mole problem (Chemistry), Please show all calculation: How many formula units of lead (II)…

A:

Q: 4. How does the saliva in the chewed gum affect the % sugar in bubble gum, higher or lower? ( s)…

A:

Q: Calculate the mass in grams of 0.167 moles of lithium hydroxide.

A: Given data,Moles of LiOH=0.167molAtomic mass of Li=6.941g/molAtomic mass of O=16g/molAtomic mass of…

Q: Give good solution ASAP thanks For the each element, convert the given mole amount to grams.   a)…

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

Q: 13) How many moles are there in 4.50 x 1022 molecules of CH,?

A: 13.  Number of particles = 4.50 x 1022 molecules Number of atoms = Number of moles of CH4 x NA Here…

Q: 10 moles of NH3 is _____________ times bigger than 2 moles of NH3  answer choices: two times…

A: Standard data: Molar mass of NH3 = 17.031 g/mol

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.