3295 kcal 13786.28 kJ 0.135 5.31 x 10 J kcal Incorrect

Q: A chemist is working with two NaCl solutions that each contain evidence of NaCI solid. The chemist…

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Q: Mass of beaker 50.5g Mass of marble before reaction 3.0g Mass of marble after reaction…

A: Formula of marble CaCO3 Chemical reaction CaCO3 (s)  + 2 HCl (aq) →CaCl2 (aq) + CO2 (g) + H2O (l)…

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Q: 150 140 KI 130 120 110 100 NANO3 90 80 70 60 NH CI KCI Naci 50 40 30 20 KCIO3. 10 Ce2(SO4)3 O 10 20…

A: A solution can be classified as follows on the basis of solubility of the solute in a given solvent…

Q: Question is attached

A: Combination reaction can be defined as a reaction in which two or more compounds or reactants…

Q: Express 1:444 (w/v) as a percent concentration (round to three decimal places) and as a…

A: We need to convert given w/v concentration to percent concentration and parts per million.

Q: 4 HCI (g) O2 (g) 2 H20 (1) + 2 Cl2 (g) AH= +27 kcal +. -->

A: Le Chatlier's principle : If an equilibrium is disturbed by changing conditions, the position of…

Q: Balance the reaction BaCl2 (aq) + AGNO3 (aq) Ba(NO3)2 (aq) + AgCl(s). Express your answer as a…

A: The reaction given is, => BaCl2 (aq) + AgNO3 (aq) → Ba(NO3)2 (aq) + AgCl (s)

Q: A 10 % solution of NaCl means that in 100 grams of solution there is? a. 5.85 g NaCl b. 58.5 g…

A: A multiple choice question based on percentage of solution, which is to be accomplished.

Q: The density of an aqueous solution containing 40.0% sulfuric acid (H2SO4) by mole is 1.681 g/mL. c)…

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Q: 3.21 g of potassium chloride dissolved in 30.2 g of water Percent by mass = % KCI 3.21 g of…

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Q: How many grams of sucrose are needed to make 815 mL815 mL of a 36.0% (w/v)36.0% (w/v) sucrose…

A: Given data: 815 mL of a 36.0% (w/v) sucrose solution   w/v % represents the weight or grams of…

Q: 3. Iron (III) oxide + carbon monoxide produce iron + carbon dioxide (Fe = 0 KJ) Fe203 (s) + 3 CO (g)…

A: The question is based on the concept of chemical thermodynamics. we have to calculate the enthalpy…

Q: If You observe a the formation of heat when two solutions are mixed you can reasonably conclude that…

A: Chemical reaction, a process in which one or more substances, the reactants, are converted to one or…

Q: AG°ren kJ

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Q: 3. AgNO3(aq) + NaC(aq) AgCI(?) + NaNO;(?) a. Given the above double displacement reaction, identify…

A: The state of substance tells about its nature whether it is, solid, liquid or gas. A double…

Q: 2. Calculate the normality of 0.321 g sodium carbonate when it is mixed in a 250 mL solution. a) 0.2…

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Q: A 650 mL sodium bromide solution has a bromide ion concentration of 0.245 M. What is the mass (g) of…

A: Molarity is equal to the number of mole of solute that dissolved in per liter of solution. Its SI…

Q: 636.2 Joules is equal to how many calories

A: Ans  We know that  1 cal  = 4.184 joul 1 joul = 1/4.184 Cal

Q: GIVE SIMPLE ANSWERS*** 1. a) Describe a mechanical mixture.   1. b) Describe a solution.

A: 1. a) Describe a mechanical mixture.   1. b) Describe a solution.

Q: If we dissolve 33 gg of salt in 251 gg of water, what is the mass of the resulting solution? 218 gg…

A: Given that, mass of salt=33 gg mass of water= 251 gg

Q: Muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware…

A: Consider the given information is as follows; Percent weight/weight = 33% Mass of HCl (solute) = 5.5…

Q: Question is attached

A: The chemical reactions include various types they are combination reaction, displacement reaction…

Q: There is a double displacement between calcium carbonate and hydrogen chloride to yield calcium…

A: Solution: We know calcium carbonate is basic in nature,so react with Acid HCl. CaCO3 + HCl =>…

Q: Differentiate the following: (sentence form) a. pH from pOH b. Ka from Kb c. pKa from pKb d. Kw from…

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Q: N2(g) + 3h2(g) ➡️ 2nh3(g) Redox yes or no

A: Given reaction is redox or not?

Q: A sample contains FeS2. At the end of its gravimetric determination, BaSO4 is weighed and the…

A: Solution:  In quantitative analysis we must know about the chemistry involve for each stoichiometry.…

Q: For the following reaction: H3PO4 + 3 KOH  K3PO4 + 3 H2O Calculate the normality of a solution…

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Q: Enter your answer in the provided box. How many grams of solute are needed to make 870 mL of 6.46 x…

A: Given data: Volume = 870 mL Concentration of potassium sulfate = 6.46×10-2 M

Q: Weight of filter paper = 0.756 g Weight of filter paper + barium sulphate precipitate = 0.990 g…

A: Result and Discussion: In this experiment, Gravimetric analysis is used to calculate the proportion…

Q: 1) [20 pts] Balance the following equations: a) HI + MnO, à Mnl, + I, + H,0 b) Mg + MnO, à MgO + Mn

A: To balance an equation the coefficients are multiplied as prefix to the molecules to get the equal…

Q: Calculate the normality of 0.321 g sodium carbonate when it is mixed in a 250 mL solution

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Q: Which of the following best describes exothermic chemical reactions? O. They never occur…

A: Exothermic reaction = Reaction in which heat is given away to surrounding is called as a exothermic…

Q: A chemical reaction that has the general formula of AB + C CB+A is best classified as a reaction.

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Q: (CN), : (CN),rt : P(NH,),P+ :

A: Using concept of electronic configuration of central metal ions.

Q: P. 25.00 ml HCl solution is required to react with 0.1854 g of pure Na2CO3. What is the normality of…

A: Interpretation-  When 25mL of HCl solution is required to react with 0.1854g of pure Na2CO3 then…

Q: + H* H;SOA(aq) ·HgSO,

A: The question is based on concept of organic mechanism. it is an electrophilic addition reaction.…

Q: Balance the following equation Na+CI2>Na2O

A: Introduction: The chemical equation shows the reaction between the two or chemical species and their…

Q: What volume (in mL) of a soft drink that is 10.5% sucrose (C12H22O11) by mass contains 78.5 g of…

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Q: Determine the concentration of a solution prepared by diluting 25.0 mL of a stock 0.188 M Mg(NO3)2…

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Q: balance Na(s)+HCI(aq) NACl(aq)+H2(g)

A: The question is based on balancing the given equation. we have to systematically balance the…

Q: A 2.57 g sample of fat contains 1.21 mg of PCB's. What is the concentration of PCB's in the fat in…

A: A 2.57 g sample of fat contains 1.21mg of PCB.

Q: Which of the following statements is not correct: 1 O Clesning solution consists nanly of Na-Cr»O,…

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Q: 150 140 KI 130 120 110 100 NaNO3 90 80 70 60 NH&CI KCI Naci 50 40 30 20 KCIO3 10 Ce2(SO4)3 0 10 20…

A: The solution in which more solute can be dissolved at a given temperature and pressure then it is…

Q: Consider a hypothetical chemical reaction: A+B C+D (In thi

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Q: A +B C + D AG = -1.45 kcal/mol AG° = - RT LnKg R=0.001987 kcal/mol.K

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Q: How many grams of sodium carbonate are present in 25.7 mL of a solution that is 24.0% sodium…

A: Mass of solution can be calculated as follows:

Q: A solution of HCI is standardized against a sample which has been previously found to contain 71.22%…

A: Given: Weight of Na2CO3 sample= 0.5962 g Purity of sample = 71.22 %