Calculate the mass of Na in 80.0 g NaCl. A. 31.5 g B. 6.2 g C. 40.0 g D. 1.9 g

Q: Convert the mass of zinc in the data table into moles of zinc using the atomic mass of zinc. Data…

A: We have given that  Mass of of zinc = 0.55g Molar mass of Zinc = 65.38g/mole  No of mole = Given…

Q: A student started with a sample of Cu of 8.66 grams . After the sample was burned in air, the…

A: The mass of Cu sample = 8.66 grams The mass of sample of Oxide after burning the Cu  ( Cooper oxide…

Q: Anthracite is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A:

Q: Determine the number of atoms in 39.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A:

Q: A compound was analyzed and the following results were obtained: • Molar mass: 270.4 g/mole • Mass…

A: The chemical formula of an unknown compound is determined by the percent by mass of the elements…

Q: Use the standard entropy data to determine the change in entropy for each of the reactions listed (…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: A copper ring is composed of 1.45×1023 atoms.1.45×1023 atoms. Calculate the mass of the ring in…

A: The mass of the ring in grams is to be calculated

Q: Supply the structures of compounds A–I in the following synthesis scheme.

A: Alkane reaction with br2 leads to bromination and then reaction with (CH3)3COK abstract the proton…

Q: (a) 2CH4(g) + 2CO2(g) CH4(g) + 2H0(g) + 2CO (g) (b) CO2(g) + 3H;(g) → CH;OH(g) + H2O(g) (c)…

A:

Q: A 69.56 g sample of SOCI2 reacts with 13.93 g of CO2 to form SO2 and CCI4. 2 SOCI2 (1) + CO2 (g)…

A:

Q: a. Cl2(g) + NaBr(aq)→ NaCI(aq) + Br2(1) b. CaO(s) H2O(1)→ Ca(OH)2(aq) c. Ca(CIO-)2(s)→ CaCl2(s) +…

A:

Q: D* (aq) + CO,-(aq)→ (s) +3H;O(1) HCI (g) + NH3 (g) → NH,CI (s) 2H2S(g) +302(g) → 2H,0(g) + 2SO2(g)…

A: Equation first :1 )  number of molecules of products is  more than that of reactant so entropy is…

Q: Calcium oxide (CaO), also known as quicklime, can be produced by heating calcium carbonate (CaCO3).…

A: The molecular formula of calcium oxide is CaO. It states that one molecule of calcium contains one…

Q: Determine the mass in grams of 4.83 × 10²¹ atoms of barium

A: Given :- number of atoms of Ba = 4.83 × 1021 atoms  Mass of 1 mol Ba = 137.33 g  To calculate :-…

Q: Q/ 0.1 g a NaCL , qul Moarity2 L. Na = 23 . CI = 35.45 *

A: Kindly post question in english language from next time. I can't understand your language but…

Q: A 25.75 g sample of nitrogen oxide was found to contain 6.68 g of nitrogen and the rest oxygen…

A: Compound is made of N and O only. So Nitrogen oxide mass is given and nitrogen mass is given then…

Q: A 36.41-g sample of calcium carbonate (CaCO3 ) contains 14.58 g of calcium and 4.36 g of carbon.…

A: Given data: Mass of CaCO3 sample = 36.41 g Mass of calcium = 14.58 g Mass of carbon = 4.36 Formula…

Q: → 2NH3 (9) 1. N0 + 3H, 2. CO20) 2(g) CO(NH,2) + H,O (6), + 2NH, 2(g) 3(g) 3. C,H210) + H,O (a) 2CO,…

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

Q: Consider Cl2+F2=CLF3 (ΔH°f = -164.65 kJ/mol) . 1. If 42 g of F2 is combined with 142 g of Cl2, how…

A: Balanced chemical equation: Cl2  +   3F2  ------>   2ClF3 Number of moles = Mass/molar mass

Q: how many atoms of scandium are in 7.54 moles of scandium

A: According to  Avogadro,  1 mol of scandium has 6.023 x 1023 number of atoms  Then 7.54 mols of…

Q: A 85.6 g sample of Fe304 reacts with 18.2 g of CO to form FeO and CO2. FezO4(s) + CO(g) 3FEO(s) +…

A:

Q: For each reaction, predict the sign and find the value of ΔS°:

A: Given:-                     a    3NO2g +H2Ol  →2HNO3l +NOgb   N2g +3F2(g)   →2NF3gc   C6H12O6s +6O2g…

Q: 15. Copper (1) oxide, Cu2O, is reduced to metallic copper by heating in a stream of hydrogen gas.…

A: Reaction: Cu2O +H2 →2Cu +H2O Molecular mass of Cu2O=(2 x 63.55 +16)=(127+16)=143 when 143 g of Cu2…

Q: (a) CaCO,(s)²Ca²*(aq) + CO,²-(aq) (b) Mg,(PO,);(9) =3 Mg²"(aq) + 2 PO,' (aq) (c) CO(g) +…

A:

Q: mass Al = 27.0g A1 find the mass of AI mole AI जनद y=.073750. f

A: Given, y ( 27.0 g Al / mole Al )  y = 0.02375        Required,                          Mass of Al…

Q: Determine the number of atoms in 63.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Given : Mass of 1 mole of calcium = 40.08 g And mass of calcium = 63.0 g

Q: Analysis of a 39.8 g sample of water revealed a mass percent for lead of 4.87%. Calculate the number…

A: Molarity is defined as “the mole of the solute per unit volume of the solution”. It is represented…

Q: Which sample will have the greatest mass? A. 2 mol of SO2 B. 1 mol of SO2 C. 1 mol of SO3 D. 2…

A:

Q: Determine the number of atoms in 31.0 grams of bromine, Br. (The mass of one mole of bromine is…

A:

Q: Determine the number of atoms in 81.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Atomic weight of any element contains contain Avogadro number of atoms. Here mass of 1 mole of…

Q: Mass of Crucible and Cover= 62.17 g Mass of ……… and solid hydrate= 63.28 g Mass of ………. And residue=…

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

Q: Determine the mass, in grams, of 0.580 moles of Pb (1 mol of Pb has a mass of 207.2 g).

A:

Q: 10.91 9/mol 2) KOHH 3) BeCla )CI = a(35 45)= 0.91 g /mol 5) Big 2CF lir keti l-15-aa

A: 3.Molar mass of BeCl2  Be mass = 9.012 g/mol        Cl mass = 35.5g/mol BeCl2 = 9.012 + (2×35.5) =…

Q: Determine the mass, in grams, of 0.145 moles of Pb (1 mol of Pb has a mass of 207.2 g).Determine the…

A: Given: Moles of Pb = 0.145 mol Molar mass of Pb = 207.2 g/mol Mass of Na = 61.0 g Molar mass of Na =…

Q: Determine the number of atoms in 15.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: one mole of any species contains one avagadro number of atoms

Q: Determine the mass in grams of 4.65 × 1221 atoms of barium. (The mass of one mole of barium is…

A:

Q: The density of MgO is 3.6 g/cm3. The atomic masses of magnesium and oxygen are 24.31 g, and 16 g,…

A: Given that Density of MgO = 3.6 g/cm3 Molecular weight of MgO = (1* 24.31) + (1 *16) = 40.31 g/mol

Q: A mixture of 50.0 g of S and 1.00x10^2 g of Cl2 reacts completely to form S2Cl2 and SCl2. What mass…

A: When S react with Cl2, it will form S2Cl2 and SCl2 so first write reactant and product then balanced…

Q: Mass of crucible, lid, and magnesium oxide                                             ____19.41…

A: Given: Mass of the crucible, lid, and magnesium oxide = 19.41 g And Mass of empty crucible and lid…

Q: Balance each reaction and write its reaction quotient, Q꜀:

A:

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: A 0.8870 g sample containUng Qaix Naci and KGI was Teated win AgNO3. formed had a mass of 1.913 g.…

A:

Q: 19. A certain sample of dichlorine heptoxide consists of 4200 oxygen atoms combined with chlorine…

A: According to the given data the sample is dichlorine heptoxide. The sample consists of a total of…

Q: A sample of metal weighing 1.4 g is combined with oxygen; the metal oxide weighs 33.5 g. The mass…

A:

Q: Determine the number of atoms in 23.0 grams of calcium, Ca. (The mass of one mole of calcium is…

A: Mass of Ca = 23 g  Molar mass of Ca = 40.08 g/mol

Q: the mass percent of magnesium in MgSO4.

A:

Q: Calculate the mass of sample. 72.1 mmol SO2

A: Given:  The number of moles of SO2=72.1  mmol=72.1×10-3mol The molar mass of…

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.