Calculate the % Composition of the elements that make up Sodium Nitrate. % Na , % N, % O a) 43.4% Na, 26.4% N, 30.2% O b) 27% Na, 16.5% N, 56.5% O c) 33.3% Na, 20.3 % N, 46.4 % O d) 22.99% Na, 14.01% N, 48% O

Q: how many moles of ammonia would be required to react exactly with 0.470 moles of copper(ll) oxide in…

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Q: 35.00 mL of 0.450 M sodium hydroxide was reacted with 12.00 mL of 0.500 M phosphoric acid (H3PO4)…

A: No of moles = Molarity * Volume (L) Moles of NaOH = 0.45 M * 0.035 L = 0.01575 mol Moles of…

Q: Calculate the percent by mass of potassium nitrate in a solution made from 67.0g KNO3 and 447 mL of…

A: Here we use formula mass percentage , that is ( Mass of solute/ Mass of solution)* 100  Mass of…

Q: Which of the following statements is incorrect?   Group of answer choices   -Both compounds and…

A: Compounds are the composed of the same type of molecules that contain more than one type of atom.…

Q: Calculate the exact mass of NaOH needed to prepare 1.0L of 0.25N NaOH for standardization.

A: Concentration terms are used to express the amount of solute present in a given amount of solution.…

Q: In the standardization of NaOH solution, 0.521l g potassium hydrogen phthalate (204.22 g/mol) is…

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Q: How many grams of calcium phosphate will be produced from 75mL of H3PO4 which has a molar…

A: Volume of H3PO4 = 75 mL = 0.075 L [ H3PO4] = 0.024 M Molar mass of Ca3(PO4)2 = 310.18 g/mol

Q: Calculate the percent by mass of potassium nitrate in a solution made from 67.0 g KN0, and 447 mL of…

A: Given: Mass of KNO3 = 67 g The volume of water = 447 mL The density of water = 0.997 g/mL Standard…

Q: Decide if the following reaction is balanced or not. Explain. C2H6 + 7 O2 → 2 CO2 + 3 H2O

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Q: Solubility Curves of Selected Compounds 150 140 130 120 110 100 NaNO3 90 80 70 60 NH&C KCI Naci 50…

A: Here If the graph is decreasing by increasing temperature it means that the solubility of these…

Q: 59. Complete and balance each of the following combustion re a. C6 H6 (1) + O2 (9) → b. C5 H12 (1) +…

A: 1.Combustion Reactions: A combustion reaction is a reaction in which a substance reacts with oxygen…

Q: number of moles and the mass

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Q: Calculate the percentage mass composition of the following substance a. Ethanol ( C2H6O ) b. Gypsum…

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Q: What is the equivalent weight per mole of carbonic acid? a. 4 b. 2 c.1 d. 3

A: Here the formula used will be   Number if equivalents= moles x the n factor  Here the n factor for…

Q: What is the equivalent weight of Na₂S₂O3.5H₂O? Na = 23.0, S = 32.1, O = 16.0, H = 1.0

A: finding the equivalent weight of Na2s2o3.5h2o

Q: Find the percentage composition by mass of EACH COMPOUND. Given: Raw Materials: 500 g calcium…

A: Actual yield is the amount of product that is obtained when reaction takes place in a laboratory…

Q: How many Hydrogen atoms are there in a solution of 4.5g of H 20 and 2.8g of NH 3? 6.0 x 1023 1.2 x…

A: 1 mole of any given substance consists of 6.023 x 1023 molecules. This numerical term is termed as…

Q: 6)a. Potassium permanganate c. Calcium carbonate e. Ferric carbonate g. Sodium sulfite i. Iron (II)…

A: Potassium permanent = KMnO4 Calcium Carbonate = CaCO3 Ferric Carbonate = FeCO3 Sodium sulfite =…

Q: Determine the charge (in C) involved in plating out 1 mole of Fe from a solution of Fe203. O 385940…

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Q: A student carries out the following experiments and records the following observations.  1.  A few…

A: It is clear from the experiment that KOH(aq) when combines with Cu(NO3)2(aq), it gives blue…

Q: Complete, balance, and determine the type/s of the following reactions: a C8H14 (l)  + O2 (g)…

A: The first given reaction is the combustion of alkyne . When octyne burns in the presence of oxygen…

Q: Which solution contains the largest number of moles of fluoride ions?   7.50 mL of 0.500 M FeF3…

A: Consider the dissociation of a molecule, AxBy AxBy⇌xAy+ + yBx- That is, the dissociation of 1 mole…

Q: Caproic acid, HC6H11O2, is found in coconut oil and is used in making artificial flavors. A solution…

A: An acid is a substance that gives H+ ions in its solution whereas a basic substance gives OH- ions…

Q: 20. Calculate the percent composition of Na in borax, Na2B2O7, used in commercial laundry processes.…

A: Given that -  Borax, Na2B2O7, used in commercial laundry processes    The atomic masses of different…

Q: What mass of hydrogen gas can be produced by reacting 6 moles of aluminum with HCl? 2Al(s) +…

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Q: How many moles of K* ionss are formed when 2 mol of KNO3 dissolves in water? Select one: O 2 O 1 O 3…

A: In aqueous solution,  2KNO3(aq) <------> 2K+(aq) + 2NO3-(aq)

Q: Wastewater contains 10 mg/L NH3. Its N concentration = _____ mg N/L. (Hint: atomic weight: N, 14…

A: Wastewater contains 10 mg/L NH3 . If we want to calculate the concentration of N then we need to…

Q: For items 18-20, refer to the situation on the box below. In the equation: NaOH • H,SO, → Na,S0, +…

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Q: Which of the following sulfates are insoluble in water? Na2S04, CaSO4, PBSO4, (NH4)2SO4 ON22SO4 and…

A: Calcium, strontium, barium, silver and lead sulphates are insoluble in water. Reason :-  Sodium…

Q: Calculate AH° for the process ½ N2(g) + ½ O2(g)→ NO(g) from the following information AH° = -192.3…

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Q: A solution is made by dissolving 17.8 g of magnesium sulfite, MgSO3, in enough water to make exactly…

A: Molar mass of magnesium sulfite = 104.4 g/ mol  Molarity = moles / Volume (L)

Q: A chemist places 3.37 g of sodium carbonate in a 250.0 mL volumetric flask and fills it to the mark…

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Q: Explain how each one of these activities would affect your calculated percent yield of zinc…

A: Given activities affect the on calculation of percentage of yield. How it will affect explaination…

Q: In the standardization of NaOH solution, 0.8211 g potassium hydrogen phthalate (204.22 g/mol) is…

A:

Q: A student carries out the following experiments and records the following observations.  1.  A few…

A: Step 1)  1) When KOH is added to Cu(NO3)2 . a white solid substance formed which contains Cu2+ . the…

Q: The calcium from a sample of limestone weighing 607.4 mg  was precipitated as CaC2O4 (128.10 g/mol)…

A: The mass of the limestone sample is = 607.4 mg The mass of CaCO3 formed by ignition is = 246.7 mg…

Q: 250% Explain why KCI is an ideal salt to be used in salt bridge.

A: Dear student I have given answer to your question in the image format.

Q: Consider the following chemical reaction: CaO(s) + H2O(l) ----------> Ca(OH)2 (aq) if 1.00 g…

A: Given  Mass of calcium oxide = 1.00 g  Mass of water = 2.00 g

Q: Give the empirical formula of an oxide of lead that contains 90.65% Pb.

A: Given percentage of Pb = 90.65 %  Let the total mass of oxide be 100 g.  Mass of Pb = 90.65 g  Mass…

Q: The following is a formula for the preparation of a suppository for the treatment of migraine…

A: Given data,Number of suppositories=175Mass of Ergotamine tartrate=2mgMass of Caffeine=100mgMass of…

Q: For the analysis of trace metals it is necessary to prepare solutions of very low concentrations…

A: Molarity of a solution is defined as the moles of solute present in one litre of solution. It is…

Q: How much of each of the following chemicals is needed to prepare 1,000 mL of both a 1M and a 1N…

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

Q: A solution is made by dissolving 17.8 g of magnesium sulfite, MgSO3, in enough water to make exactly…

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Q: 1. Determine the mass of CaCl2·2H2O (MW 147.02 g/mole) to weigh out using a four- place analytical…

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Q: A solution is prepared by dissolving 52.3 g of RÜC1 in enough water to form 502 mL of solution.…

A: Consider the given information is as follows; Mass of RbCl = 52.3 g Volume of solution = 502 mL…

Q: In the balanced chemical reaction shown below, what is the mole ratio between Fe and AI? Fe2O3(s)…

A: In a balanced chemical equation the coefficients of reactants and products indicate their number of…

Q: Calculate the percent composition of boron in sodium borate. Group of answer choices 15.230%…

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Q: When the same element is both oxidized and reduced in a given reaction, disproportionation is said…

A: Disproportionation reactions are intramolecular redox reactions, in which one element undergoes…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".