a 22.5 grams sample of ammonium carbonate contains_____________moles of ammonium ions.

Q: A volume of 56.0 mL of He at STP: How many moles? b. Weight how much? Contains how many molecules?…

A: Given: Volume of He at STP = 56.0 mL

Q: Covert 0.00823  moles of  HCL to g   Convert 0.00911 moles Mg to g

A: Using formula:    No Of moles (n)= given mass/molar mass  No of moles of HCl is 0.00823mole No. Of…

Q: 3. 75 ml CCl, (liquid) Calculate n (mol CCI4)

A: Given data : Volume of CCl4 = 75 mL Also density of CCl4 = 1.59 g/mL So, mass of CCl4 = Volume x…

Q: The number of moles in various samples is shown in the table below. Determine which sample contained…

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Q: A mass of KHP is measured at 0.3051g and contains ______ moles. Group of answer choices

A: KHP means potassium hydrogen phthalate. The molecular formula of KHP is C8H5KO4.

Q: moles

A: Titration of KHP with NaOH

Q: What is the molar mass of Al2(Cr2O7)3?    809.8554 g/mol B. 269.9518 g/mol C. 401.9448 g/mol…

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Q: There are __________ mol of carbon atoms in 4 mol of dimethylsulfoxide ( C2H6SO)

A: Given , molecule = dimethylsulfoxide C2H6SO

Q: b) Mass of N2 produced when moles of K2O is produced. blank-blank-blank-conversion factor 1 blank -…

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Q: How many moles of HCl need to be added to 200.0 mL of a 0.200 M solution of NaF to make a buffer…

A: Given,Volume of NaF=200 mL=0.2 LMolarity of NaF=0.200 MpKa=6.8×10-4pH=3.50…

Q: chemical formula

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Q: Question 4 A solution is made by dissolving 60.0 g of AlCl3 in enough water to make 250.0 mL of…

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Q: The weight of saturated NaCl was obtained by weighing the collected solid. Was this an accurate…

A: Mass percent is the mass of solute added in 100g of solution. mass percent = mass of solute mass of…

Q: CHEM 181 Experiment #S Part B Calculate the approximate volume of vinegar to react with 25 mL of 0.1…

A: Molar mass of acetic acid = 60.052 g/mol Trial 1 :Mass of acetic acid in vinegar sample = moles of…

Q: 9.to convert from moles of A to grams of A you use the ___________ a.Molar Mass b.Mass Ratio c.Mole…

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Q: 8.The number of moles of each compound in a chemical reaction is represented by a ______…

A: Basically the question is asked how to determine the moles in a chemical reaction by seeing it.

Q: How many moles of acetate ions are present in a sample that contains 3.35 moles of magnesium…

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Q: A 30.5 gram sample of glucose (C6H12O6) contains ________ mol of glucose.

A: Molar mass of Glucose i.e C6H12O6 is given by  Molar mass = Atomic mass of C X 6 + Atomic mass of H…

Q: Na2CrO4: ________ g/mole

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

Q: Use the References to access important values if needed for this question. According to the…

A: C(s) + O2(g) ---> CO2(g) mass of Carbon (C) reacts = 31.9 g Excess reactant: oxygen gas (O2)…

Q: How many moles of sulfate ions are contained in 0.420 moles of aluminum sulfate?   A. 0.140 moles…

A: Only 1st question is answered according to the policy

Q: If you 3.7 grams of BeCl₂ and 20 ml of a 3M solution of LiH and you make 0.22 grams of BeH₂ and .99…

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Q: How is the mass of the acid in the aspirin determined?  A. Mass of the acid= moles of acid x molar…

A: To answer: How is the mass of the acid in the aspirin determined? A. Mass of the acid= moles of acid…

Q: What is the empirical formula of an compound containing 81.8% C; 18.2% H.   C H Mass of element (in…

A: The question is based on the concept of elemental analysis. based on the data provided, we have to…

Q: How many moles of zinc ( Zn ) are there in 45.6 grams of zinc? A. 0.697 moles B. 1.39 moles C. 0.349…

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Q: 24.3 g He = ____________ mol He

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass.

Q: calculate the mass of calcium carbonate in the weighing boat using the information below. Mass of…

A: Given:  Mass of weighing boat  = 2.26 g  Mass of calcium carbonate +  weighing boat  = 9.80 g

Q: reactant controls the amount of product formed in a chemical reaction? A. excess reactant B. mole…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first question…

Q: c) Mass of KNO3 decomposed when grams of K2O is produced. blank-blank-blank-blank- conversion…

A: Conversion factors = ? Decomposition Reaction of KNO3 is  4KNO3 ==> 2K2O + 5O2 + 2N2

Q: Molar mass is the relationship between ____________. A. grams and liters B. moles and grams…

A: Since molar mass is defined as mass of substance in grams in 1 mole of it.

Q: With the correct amount of sig figs thank you!

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Q: 63.45 g of Zn contains ______ moles.

A: The number of moles of any substance present in the sample, we simply divide the given weight of the…

Q: Molar mass is a numerical value that represents ______.   A the mass of a substance    B the mass of…

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Q: rules of significant figures; include units with each result. Mixture 1 Mixture 2 Pure Lauric Acid…

A: The mass percent of stearic acid in different mixtures is given as follows- Mass % of component=Mass…

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.