1. To 50.0 g of water at 25.00°C in a calorimeter was added 5.00 g of solid sodium nitrate, also at 25.00°C. The specific heat of the resultant solution was 4.20 J/g-°C. The heat capacity of the calorimeter was 15.0 JC. The energy change for dissolving sodium nitrate in water is 20.5 kJ per mole of sodium nitrate. a. Write a chemical equation showing the dissolution of solid sodium nitrate in water. b. Is the dissolution of solid sodium nitrate in water endothermic, exothermic, neither, or cannot be determined? Justify your choice. c. After the solid sodium nitrate dissolved in water, what was the final solution temperature?

Q: Which of the following is not amphoteric? O H3 PO4 OHCO, OHSO OH2O

A: Given,  H3PO4 HCO3-  HSO4-  H2O 

Q: What is the molality when a 0.75 mol is dissolved in 2.50 kg of solvent?

A: To solve this question, use the molality formula and calculate molality for given solution.

Q: What volume of 0.73 M NaCl solution contains 145.9 grams of NaCI?

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly repos...

Q: 3. Using standard reduction potentials from Table L1 of Appendix L in your textbook: Chemistry: Atom...

A:

Q: 12.) Fuel engineers use the extent of the change from CO and H20 to CO2 and H2 to regulate the propo...

A: Given reaction: CO (g) + H2O(g) ⇌ CO2(g) + H2(g) Given, Kc = 1.56  The initial moles of CO = 0.250 m...

Q: Describe the mechanism of action for moist heat dry heat aldehydes

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

Q: Calculate the pH of the solution after the addition of cach of the given amounts of 0.0676 M HNo, to...

A: Aziridine reacts with HNO3 as per the following reaction: Aziridine+HNO3→Aziridinium ion+NO3-

Q: Problem 4 IR Spectrum (liquid film) 4000 3000 2000 1600 1200 800 V (cm1) Mass Spectrum 107/109 No si...

A:

Q: [Review Topics] [References] Draw a structural formula for the alkene you would use to prepare the a...

A: Hydroboration/oxidation ->when alkene reacts with BH3/H2O2,-OH there is formation of alcohol.

Q: Write the most stable chair conformation for each cyclonexane below. Br.

A: More the number of groups in equitorial position, more will be the stability of the conformation.  A...

Q: Draw the rganic product(s) of the following reaction. NaCN

A: ->Nucleophile = NaCN ->Acidic medium.  

Q: The equilibrium constant, K, for the following reaction is 6.50×10 3 at 298 K. Calculate Kp for this...

A: We have find out Kp for reaction.

Q: Which of the following molecules are isomers? (Make sure you can see all of all three structures.) н...

A: Isomers are the compounds having same molecular formula but having different properties. The differe...

Q: The enthalpy of solution for potassium perchlorate - KCIO4 is +51.04 kJ/mol. How many grams of potas...

A:

Q: Identify each reaction below as one of the following: addition, elimination, condensation, substitut...

A:

Q: Be sure to answer all parts. The equilibrium constant (K) for the reaction 2HCI(g) = H2(g) + Cl½(g) ...

A: Kc is the ratio of the equilibrium concentrations of product over equilibrium concentrations of reac...

Q: Will the aqueous solutions be acidic, basic, or neutral? a. Ca(CN)2 b. Fe(NO3)3

A:

Q: 3) Aniline (B), shown below, is an organic base used in the manufacture of certain plastics. NH2 a) ...

A: Given,   aniline is represented by B it is given that it is a base.

Q: Disaccharides are joined by glycosidic bonds formed between the anomeric carbon on one monosaccharid...

A: The bond between two sugar molecule is known as glycosidic bond.  This bond is formed between 2 OH g...

Q: What quantity in moles of chlorine gas at 120.0 °C and 33.3 atm would Occupy a vessel of 18.0 L?

A:

Q: hear Ca) = mcAT where M= mass of Souion C= Specfic heat of Hao= 4.184 3lg°c For #1: Civen, m = 89.96...

A:

Q: Complete the following table. Round each of your answers to 3 significant digits. energy content whe...

A: 1 kcal = 1000 cal  1 kcal = 4.184 kJ 

Q: Br ÓH end here start here

A:

Q: The pressure percentages in Table 10.4 are essentially mole fractions. For example, the mole fractio...

A:

Q: (Q7) If the initial concentration of the weak base ammonia in a solution is 0.247 M and the solution...

A:

Q: A student ran the following reaction in the laboratory at 1152 K: 2502(g) + 02(g) = 2503(g) When she...

A: We have to calculate the Kc value.  

Q: A reaction vessel for synthesizing ammonia by reacting nitrogen and hydrogen is charged with 5.04 kg...

A: Given,  5.04 kg of H2 reacts with  excess N2 Actual yield of NH3 = 23.2 kg 

Q: Mass of Solid Na OHig 2.035 Mass of total solution (g) १,१८३ Initial temp °C Final Temp °C Change in...

A: Moles are Calculated using formula :  Moles = mass / molar mass    Enthalpy ( kJ/mol ) is calculated...

Q: What weight of pyrite ore (impure FeS2) should be taken for analysis that the no. of centigram of pr...

A: A question based on mole concept that is to be accomplished.

Q: Beaker # Volume of 0.25 M HC,H302 (mL) Volume of 0.25 M NaC H302 (mL) 40.00 0.00 32.00 8.00 24.00 16...

A: Since you have posted a question with multiple sub-parts with multiple questions, we will solve the ...

Q: What mass of aluminum metal can be produced per hour in the electrolysis of a molten aluminum salt b...

A:

Q: Draw the major product of this reaction. Ignore inorganic byproducts. H3O*

A:

Q: Inside a closed container the pressure of a gas sample is 37.8 atm with a volume of 0.2 L. Upon open...

A:

Q: Predict the products of the reaction below. That is, complete the right-hand side of the chemical eq...

A: HClO4 is a strong acid and NaOH is a strong base. When they react each other salt and water formed a...

Q: What is the correct expression of Ka for the weak acid HF? [HF * [F] [H3O*] Ka [HF * [H;O+] [F]* [H»...

A: Ka is the ratio of the equilibrium concentrations of product over equilibrium concentrations of reac...

Q: Determine the kinetic energy, in joules per mol (J/mol), of a sample of nitrogen molecules at 100.0 ...

A:

Q: The reaction AB(aq)A(9)+B(g) is second order in AB and has a rate constant of 0.0140 L- mol.s at 25....

A: The reaction given is, => Given: The reaction is a second-order reaction. Rate constant of react...

Q: (a) Name the compounds whose structures are shown below: CH-CH-CH3 či CH (ї) Н (ii) CH,CH H2C=C-CH C...

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main...

Q: Given the following equilibrium constants at 427°C: 02(g) + 4Na(I) = 2N220(s) K1 = 2.50×1049 O2(g) +...

A:

Q: Determine the molar heat of combustion for CH4(g) CHĄ(g) +2 O2(g) -CO2(g) +2 H2O{le) Given: C(s) +2 ...

A:

Q: Let's say that tea leaves in a tea bag in hot water are coming out at the rate of a first-order func...

A: Given: The process is first order. Initial amount = 5 units Amount after 10 min = 2.5 units. And the...

Q: Consider the reaction below which is the oxidation of sulfur dioxide to sulfur trioxide.  This react...

A: 2SO2(g) + O2(g) ---> 2SO3(g) Reaction is exothermic.  

Q: 88Ra undergoes alpha decay. Which of the following show the correct process for this decay? A 266Ra ...

A:

Q: A gas mixture has a total pressure of 0.51 atm and consists of He and Ne. If the partial pressure of...

A: Ptotal  = 0.51 P He = 0.23

Q: For the following salts, write the ion-product expression and calculate the solubility of the salt. ...

A:

Q: Which of the following conditions would be consistent to produce a buffer? Strong acid and a strong ...

A: Here, we have to find the condition that is consistent to produce a buffer.  

Q: Part B Use an Arrhenius plot to determine the frequency factor for the reaction. Express your answer...

A: Given : temperatures, rate constant values 

Q: What is the kinetic energy, in joules per mole (J/mol), of a sample of nitrogen molecules at 25.0 ºC...

A:

Q: The equilibrium constant, Kc, for the following reaction is 1.80x102 at 698 K. 2HI(g) H2(g) + I2(g) ...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Part A The following data show the rate constant of a reaction measured at several different tempera...

A: Arhenius equation gives the relation between temperature and rate constant.