How many formula units of CaCO3 are contained in 350. g CaCO3?

Q: How many moles of water are present in 75.0 g of H20?

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: A 7.84 g sample of MgCO3∙xH2O is heated in order to remove all of the water of hydration, after…

A: Answer:A solid compound that has some water molecules in its molecular structure is called as…

Q: Heart disease is linked to high blood cholesterollevels. What is the percent composition of…

A: Percentage composition of each element defines the amount of that particular element present with…

Q: Molecular formula of 284.77 g/molg/mol, CCl

A: The molar mass for empirical formula, CCl, is calculated as shown below.

Q: In each breath we tahe in q.5 x10 atoms of OXygen How muny Oxygen Coa,3ag/mol) are contured In each…

A: Given that, Number of atoms of oxygen taken in each breath = 9.5×1022 atoms or 9.5×1022 molecules *…

Q: The molar mass of calcium hydroxide, Ca(OH)2, is O 54.02 g/mole O 58.09 g/mole O 114.2 g/mole 74.10…

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Q: many molecules were used

A:

Q: Suppose a 17.8640 g sample of a NaCl and KCl mixture contains 3.5286 g of NaCl. What is the percent…

A: The mass percent of the component in the mixture can be calculated by using the below formula- Mass…

Q: What is the percentage composition of each element in ammonia, NH3?  82.35% N; 17.65% H  80.55% N;…

A: Ammonia(NH3) molecule contains one  nitrogen and three hydrogen atoms. We have to determine the…

Q: CH4(g) + 2 O2ie) CO2(g) + 2 H2O(g) What mass of water is produced by the complete reaction of 10. g…

A: Given the balanced reaction, CH4(g) + 2O2(g) → CO2(g) + 2 H2O(g) mass of methane = 10. g

Q: What is the milliequivalent weight (mEq wt.) of Sodium Bicarbonate (baking soda)?

A: Sodium bicarbonate = NaHCO3 Molar mass = 84 g/mol Acidity = 1 ( Acidic hydrogen per molecule). The…

Q: A compound contains, by mass, 81.7% carbon and 18.3% hydrogen. A 0.15 mole sample of this compound…

A: Given  % Carbon  = 81.7 %  % H   =  18.3 %  Number of mole     = 0.15 mole  Mass of compound = 6.6…

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is?

A: Given information,       Mass of C2H6O is 37.80 g.     Molar mass of C2H6O is 46.1 g/mol.

Q: 1. A compound that contains only nitrogen and oxygen is 30.4 % nitrogen by mass; the molar mass of…

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Q: What are the balanced chemical equations for the following? 1. Pb(NO3)2 & KI 2. Pb(NO3)2 & Na3PO4 3.…

A: When the number of the different atoms of elements in the reactants side are equal to that of the…

Q: how many moles of cocl3 are in 172.6 ml of a 19.6% mass sloution of cocl3 which has a density og…

A: You have given total volume and density, then find the mass of the solution to get the % mass of the…

Q: 4.0 mol Na can form 4.0 mol NaF and 2.5 mol F2 can form 5.0 mol NaF. What mass of NaF forms during…

A:

Q: C3H8 (g) + O2 (g) CO₂ (g) + H₂O (g) If 2.5 moles of O2 is consumed in the reaction, how many gr C)…

A: Number of moles is calculated by dividing the given mass with molecular mass. In the given question,…

Q: give an explanation of the semi-empirical mass formula

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Q: How many moles of BaCl2 are present in 26.17g of BaCl2

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Q: Calculate the percent composition for: (NH)2C204

A: The compound given is (NH4)2C2O4. In the compound, there are, 1) 2 N atoms 2) 8 H atoms 3) 2 C atoms…

Q: what is molar mass in g/mole of C5H1102

A: molar mass of carbon, C = 12 g/mole the molar mass of Hydrogen, H = 1 g/mole the molar mass of…

Q: are the balanced chemical equations for the following? 1. BaCl2 & Na2CO3 2. CuSO4 & Pb(NO3)2 3.…

A: The chemical reactions follow the stoichiometry of the reactants and the products.For balancing a…

Q: HO. Na2Cr2O7 H2SO4, H₂O SOCI₂ OH H3O+ 1. LIAI(OMe)3H 2. H3O+ excess NH3

A: The reaction scheme is shown below.We have to provide the missing products and reagents.

Q: 8. A 10.00 g sample of a compound that consists of carbon and hydrogen is found to consist of 7.99 g…

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Q: How many g of C4H4S2 are equivalent to 5.40 moles of this compound?

A: Answer: 627.48 g

Q: Find out the molar mass of C,H;NO. O 121.14 g/mol O 112.14 g/mol O 211.14 g/mol O 111.14 g/mol

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Q: etermine the formula weight of Ca 3(PO 4) 2. |a. 310 amu O b.215 amu O c. 279 amu O d. 135 amu D e.…

A: Given compound Calcium phosphate

Q: Upon combustion, an unknown compound containing only carbon and hydrogen produces 57.40 g carbon…

A:

Q: What is the mass percent of hydrogen in methane CH4?   25.13%   16.13%   20%   50%

A:

Q: What are the best reagents to perform this transformation? ? ОН Он н РСС, CH2CI2 CrO3, H30, acetone…

A: The oxidation of alcohols in the presence of a strong oxidizing agent first, forms a carbonyl…

Q: Determine the % composition of Vitamin E, C29H50O2?

A: Given : Molecular formula of Vitamin E is C29H50O2  To be determined :-  % composition of each…

Q: 7. Meo HN MeN Br Me 0=

A: We have to carry out the given transformation.

Q: What mass of H2O can be produced from th combustion of 1.5 moles of C3H8

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Q: How many grams of H2O2 are in 2.0 mol H2O2

A: The formula for molar mass is given below.On rearranging equation (1),The mass can be calculated as…

Q: What are the balanced chemical equations for the following? 1. CuSO4 & KI 2. CuSO4 & Na3PO4 3. CuSO4…

A: In a balanced chemical equation, the number of atoms of each constituent element is same on both…

Q: How many molecules of p2o5 one in 17.30 moles

A: Given :- number of moles of P2O5 = 17.30 mol  To calculate :- number of molecules of P2O5

Q: This is an impossible formula. If it were real, determine the molar mass of:Fe2Si1O4Remember that…

A:

Q: What is the percent water in MgSO4•7H2O?

A: We know that, From periodic table: Molar Mass of  Mg, =24.3g Molar Mass of  S=32g Molar Mass of…

Q: How many moles of glucoseare present in 50.0 grams of an aqueoussolution that is 2.50% by mass…

A: Given that: 50.0 grams of an aqueous solution that is 2.50% by mass glucose. So mass of glucose in…

Q: How many number of moles are present in 100 g of CaCO3?

A: The number of moles of a compound can be calculated by the ratio between mass of the compound to its…

Q: HBr HBr H₂SO4, H₂O HgSO4 H2SO4, H₂O HgSO4 1. BH3 2. H₂O₂, NaOH

A:

Q: 9. A 0.324 g sample of a compound undergoes combustion analysis and gives 1.095g CO₂ and 0.224g H₂O.…

A: Given: Mass of compound is 0.324 g. Mass of CO2 formed is 1.095 g. Mass of H2O formed is 0.224 g.…

Q: How many moles of water, H2O, are present in 75.0 g of H2O?

A:

Q: A salt water mixture was prepared by dissolving 6.98 g of NaCl in 96.1 g of water. What is the…

A: The mass percentage of a component in a given solution is defined as the mass of the component per…

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.