MasteringChemist X Bb Mastering- CHEM X MasteringChemist x S Periodic Ta C session.masteringchemistry.com/myct/itemView? assignmentProblemID=

Q: Given the balanced molecular equation: 3 Ca(NO3)2 (aq)   +   2 K3PO4 (aq)    à   Ca3(PO4)2 (s)   +…

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Q: O₂(g) + 2 H₂(g) → 2 H₂O(1) - Assume 0.250 mol O₂ and 0.810 mol H₂ are present initially. After the…

A: The stoichiometry of the balanced chemical reaction states that one mole of oxygen reacts with two…

Q: If 60.13g of Nb(s) are added to 125.0ml of a 5.96mL of a 5.96 M solution of HClO4(aq), what is the…

A: Given that -  Mass of Nb(s) = 60.13 g  Volume of HClO4 Solution = 125.0 mL  Molarity of HClO4…

Q: CH4(g)+2O2(g)→CO2(g)+2H2O(g) What mass of water is produced from the complete combustion of…

A: The objective of the question is to find out the mass of water produced from the complete combustion…

Q: A solution is made by mixing 46.2 g of alcohol into 100.0 mL of water (DH2O = 1.00 g/mL).  What is…

A: The objective of the question is to find the percentage of alcohol in the resulting solution when…

Q: An organic liquid is either methyl alcohol (CH3OH), ethyl alcohol (CH3CH2OH) o a mixture of the two.…

A: The combustion reaction of methyl alcohol and ethyl alcohol:

Q: Two sucrose solutions, 125 mL of 1.50 M C12H22O11 and 275 mL of 1.25 M C12H22O11, are mixed.…

A: Given: Molarity of first sucrose solution (M1) = 1.50 M Volume of first sucrose solution (V1) = 125…

Q: 0.25 mol Fe2(CO3)3 contains___mol carbonate ions

A: The given data: The moles of Fe2(CO3)3 = 0.25 moles To determine = The moles of carbonate ions

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

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Q: A solution is made by mixing 39.5 g of alcohol into 100.0 mL of water (DH2O = 1.00 g/mL).  What is…

A: Given: Mass of alcohol= 39.5 g The volume of water= 100.0 mL The density of water= 1.00 g/mL To…

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: A student heated the 3.572 g sample of chromium (III) chloride on a hot plate until no more water…

A: Given that, Mass of hydrated chromium (III) chloride (CrCl3•xH2O) = 3.572 g  [* x = number of moles…

Q: A chemist needs to prepare 2.13L of a 0.325 M solution of potassium permaganate. What mass of KMnO4…

A: Volume of solution = 2.13 L Concentration of solution = 0.325 M  ...Or = 0.325 mol/L because M can…

Q: A sample contained a mixture of MgCO 3 and BaCO 3. The amount of MgCO 3 was determined by reacting…

A: The given reactions are:

Q: A mixture is 19.9% NaCl, 21.0% CaCl2, and 59.1% NaBr. What mass of the mixture contains 0.485 moles…

A: mass of the mixture that contains 0.485 moles of chloride ions moles of sodium ions present in 24.0…

Q: How many total moles of ions are released when the following sample dissolves completely in water?…

A: We have to calculate the total moles of ions produced by 9.63g of CuSO4.5H2O

Q: In the laboratory you are given the task of separating Ca2+ and Co2+ ions in aqueous solution. For…

A: To solve this question, we need to use solubility rules for each ion. Solubility of compound is…

Q: 5. Calculate the mass of oxygen required to react with 1.0 g of butane C4H10. _C4H10(g) +______O2(g)…

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Q: Typical household bleach sold in the store contains 0.89 M NaClO. How many grams of NaClO are in 121…

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Q: What mass of CaCO3 can react with 82.3 g of HClO3 according to the following reaction? CaCO3(s) + 2…

A: From reaction it's clear one mole of calcium carbonate react with two mole of HClO3

Q: For the chemical reaction,   2NaOH+H2SO4⟶Na2SO4+2H2OO   what mass of sulfuric acid in grams is…

A: Interpretation -  For a chemical reaction  which is given as -…

Q: What mass of potassium is in 35.00 mL of .254 M K3PO4?

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Q: What starting materials are needed to synthesize each compound using a Robinson annulation?

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Q: CH4(g)   +    2 O2(g)  ------->   CO2(g)   +    2 H2O(g) What mass of water is produced by the…

A: 1- First determine the moles of methane :  moles of methane = ( mass / molar mass)  moles of methane…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: What percentage of the mixture was CaSO4 if a 4.550g solid mixgure containing CaSO4 is dissolved in…

A: The mass of the CaSO4 sample is =  4.550 g The mass of BaSO4 precipitate is = 0.6168 g The percent…

Q: Suppose a student starts with 2.3865 g of a sand mixture and separates the components into 1.3012 g…

A: The objective of this question is to calculate the percentage of SiO2 in the starting mixture of…

Q: 6 CO2  +  6 H2O  →  C6H12O6  +  6 O2 If 246 molecules of CO2 were allowed to react with twice as…

A: Answer:Excess reagent is the reactant that doesn't get consumed 100% during the chemical reaction…

Q: Calculate the volume (in mL) of 0.200 M Na₂CO3 needed to produce 2.00 g of There is an excess of…

A: Given reaction:Na2CO3   + CaCl2   ------>   CaCO3    + 2NaClMolar mass of CaCO3 = 100.09…

Q: For the reaction NagPO4+ 3AgNO3→Ag3PO4+ 3 NANO3 How many grams of NagPO4 are needed to completely…

A: The answer is given as follows

Q: What is the mass of solute in 3.81L of 0.0232 M Zn(NO3)2

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Q: A bright chrome yellow color is the main pigment in the paint used to create the yellow lines seen…

A: Number of moles - Ratio of given mass of substance to the molar mass of substance is called number…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Mass % of morphine = Mass of morphine x 100/Mass of mixture

Q: What is the concentration, in molarity, of the solution formed when 50.0 mL of a 1.630 M solution of…

A: In the dilution process, the relationship between initial and final concentrations and volumes of…

Q: calculate the mass (g) of H2SO3 produced by the reaction.

A: Number of moles = mass/molar mass  Mass = moles × molar mass

Q: balance and classification for ___ Sr(OH)2•8H2O (s) + ___ NH4Cl (s) → ___ SrCl2 (aq) + ____ NH3…

A: Balancing the following reaction

Q: Consider the following reaction. Pb(NO3)2(aq) + 2 KC(aq) → PBCI2(x) + 2 KNO3(y) Which species would…

A: Spectator ions are those which present in both side of a reaction and does not take part in the…

Q: 3KOH+H3PO4⟶K3PO4+3H2O what mass of phosphoric acid in grams is needed to produce 2.15 mol of water?

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Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H2O   In the above equation how many moles of water can be…

A: Given- Reaction-3 Cu + 8 HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O Mass of HNO3 = 138.6 grams To find- Number…

Q: In an experiment, a solution is prepared by dissolving 55.0 g NaOH in water until the final volume…

A: Given mass of NaOH = 55 g Volume of solution = 300 ml = 300 × 10-3 L

Q: A 12.21 g sample of a compound that contains sulfur is analyzed by precipitating all the sulfur as…

A: Given: The mass of the sample = 12.21 g The mass of BaSO4 = 11.227 g Standard data: The molar…

Q: A mixture contains Mg(NO3)2 and KBr. A 1.85 g sample of this mixture is dissolved in water and an…

A: Given,  The mass of mixture of Mg(NO3)2 and KBr = 1.85 g. This mixture is dissolved in water and an…

Q: Write the balanced NET ionic equation for the reaction when aqueous BaCl₂ and aqueous (NH₄)₂SO₄ are…

A: First of all write Balance Molecular equation then write ionic (complete) reaction then Remove…

Q: Mass NaHCO36.9341 5. Calculate the moles of NaHCO3 in the sample and record the data below. 0.0825…

A: Mass of sodium bicarbonate dissolved= 6.9341 g  Volume of the solution= 0.05 L  Density of the…

Q: Consider the following reaction: UO2 (s) + HF (aq) ➝ UF4 (s) + H2O (l). You mix together 20.0. mL of…

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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.