20 g of Na2SO4 is dissolved in 60 g in water. What is the %w/w,

Q: What is antisymmetric and symmetric wave functions? Give four examples of particles having antisymme...

A:

Q: A 359-g aluminum engine part at an initial temperature of 24.60°C absorbs 66.2 kJ of heat. What is t...

A: Formula used:-  Q = mc∆T  Where  Q = Heat absorbed  m = mass  c = specific heat capacity  ∆T = chang...

Q: A 12.63 g sample of calcium ore was dissolved in HCI and gravimetrically analyzed, through the preci...

A: Answer: These question are based on the stoichiometric calculation, where by calculation the moles o...

Q: A balloon filled with helium has a volume of 17.5 L at a temperature of 23.5 °C. The volume of the b...

A:

Q: Calculate the final pH of the undiluted buffer after 0.25 mL (5 drops) of 0.1 M NaOH is added. Ka of...

A:

Q: Does Lucas Test show positive/negative reaction and color changes to: 1-butanol 2-propanol Tert-buty...

A: 1. Lucas Test : A positive test is indicated by a change from clear and colorless to turbid, signali...

Q: Write the formulas for the following ionic compounds.

A: Dear student, since you have asked a question which has multiple subparts but according to guideline...

Q: 2. What mass of water can be heated from 0.00°C to 25.0°C with 90,000 J of energy?

A: 2) heat required q = m (g) × specific heat ( J / g k )× T (k) q = heat in joul  m = mass in g  C = s...

Q: mixture of NaOH, NaCL and MgCl2 contains 34.6% by mass chloride and 20.0% by mass hydroxide. What ar...

A: From the hydroxide mass we can calculate the moles of Hydroxide and hence the moles of NaOH. And mas...

Q: If 550 mL of 0.1M lead nitrate solution is added to a 1L of 0.25M potassium iodate.  Calculate:  a)...

A:

Q: 4. What is the temperature change for 500 g of each meta below, when 1,000 j of energy is added to e...

A: Few questions based on thermochemistry that is to be accomplished.

Q: Buffer solutions produce large changes in pH upon addition of small amounts of strong acid or strong...

A: Buffer solutions produce large changes in pH upon addition of small amounts of strong acid or strong...

Q: Which scenario best describes an acid shock event after the acidification of a body of water due to ...

A:   Ans: D The best scenario for an acid shock even after the acidification of a body of water due to ...

Q: COC2(g) = CO(g) + Cl2(g)- Submit Request Answer You may want to reference (Pages 665 - 672) Section ...

A: COCl2 (g) --> CO(g) + Cl2(g)

Q: General reaction using hydroxylamine as test for esters

A:

Q: Identify the reducing and oxidizing agents and determine the species that is oxidized and the specie...

A: Oxidising agent :Agents that oxidises others and reduced itself . Reducing agent: agents that reduce...

Q: A mixture of krypton and argon gas is compressed from a volume of 73.0 L to a volume of 30.0 L, whil...

A:

Q: A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharm...

A: Given :  pH = 3.00  Concentration of HX : 0.092 M  Assume X-282 = HX   

Q: SOCI, HO heat O:

A: When carboxylic acid react with SOCl2 forms the acyl chlorides 

Q: A 25.0ml flask contains methane (CH4) gas at 22.5•C the pressure in the flask is 225.2 mmHg. How man...

A: Volume of flask (V) = 25.0 ml = 0. 0250 L Temperature (T)  = 22.5 °C = 273.15 + 22.5 K = 295.65 K Pr...

Q: heat HN ElN (weak base) OCH conc. conditions draw 2 or 3 repeat units of the polymer product H2SO4 N...

A:

Q: Experiment 8 Preparation of Cyclohexanone by Hypochlorite Oxidation

A:

Q: Given the complex cation [Cr(NH3)4Cl2]+ What is the oxidation of the metal ion, and what is the coo...

A: Given,  the complex cation [Cr(NH3)4Cl2]+ The oxidation of the metal is:  

Q: An aqueous solution at 25 °C is 14.4% HNO, by mass and has a density of 1.054 g/mL. What is the pH o...

A:

Q: What is the weaker base, NH3 or NaNH2?

A: A weak base is a base that, upon dissolution in water, does not dissociate completely into its ions....

Q: 2,3-dimethylheptanoic acid 3,3-dichlorohexanoic acid B-iodo-4-bromo-hexanoic acid 3-chloro-4-bromohe...

A:

Q: How many grams of ferrous sulfate is needed to prepare 250-mL of 2.3 x 10-2 M of Fe2+ solution? O 1....

A:

Q: Calculate [OH] for a solution where [H,O*] = 0.00553 M. [OH ] =

A: Given: Concentration of hydronium ion, [H3O+]=0.00553 M To find: The concentration of hydroxide ion,...

Q: A buffer that contains 0.47 M of a base, B and 0.17 M of its conjugate acid BH+, has a pH of 9.22. W...

A: pOH = pkb + log [conjugate acid / base] 14 - pH = pKb + log (0.17/0.47) 14 - 9.22 = pkb + log (0.19/...

Q: According to the following balanced reaction, how many moles of CaO are required to exactly react wi...

A:

Q: A solution of housechold bleach contains 5.25% sodium hypochlorite, NaOCI, by mass. Assuming that th...

A: For a salt formed by weak acid and strong base, PH is given by  PH = 7 + 1/2 PKa + 1/2 log C  Where ...

Q: The equilibrium constant, K, for the following reaction is 1.29x10 2 at 600 K. COCI2(9)CO(g) + Cl2(g...

A:

Q: Please answer both subparts. I will really upvote. Thanks

A:

Q: molecular mass 71; IR: 3200 (strong, broad), 2250 cm-1; no absorptions in the 1500–2250 cm- range; '...

A:

Q: CH2CH,CH3 H2C-CH HC=CH

A: ->for naming of cyclic compound first of numbering the cyclic chain such that the substituent got...

Q: From the Lewis structures of the species given, pick all of those in which the central atom obeys th...

A:

Q: ACCURATE ERRONEOUS IMPOSSIBLE 9-decyn-1-ene 9-ethyldec-1-ene

A: Correct IUPAC name is name which follows rules .

Q: If 500mL of 0.1IF lead altrate solution is added to 1L of 0.25F potossium lodate, calculate : a. num...

A:

Q: When 8.0 ml of 0.00200M KSCN is mixed with 2.0 ml of 0.00200M Fe(NO3)3, the measured absorbance (A) ...

A: Answer: By using the Beer's law we can calculate the concentration of FeSCN2+ and then by using ICE ...

Q: Calculate the pH during the titration of 30.00 mL of 0.1000 M ammonia with 0.1000 M HCl(aq) after 12...

A:

Q: A mixture of NaOH, NaCl, and MgCl2 contains 34.6% by mass chloride and 20.0% by mass hydroxide. What...

A:

Q: A 2.00-L vessel contains 1.00 mol N2, 1.00 mol H2, and 2.00 mol NH3. The reaction is N2(g) + 3H2(g)...

A:

Q: CH3COOH+ NaOH The first titration used phenolphthalein, the endpoint was 43.5ml The second titration...

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

Q: Answer the questions about chlorine trifluoride, ClF3, a molecule with an expanded octet. There are...

A: The correct answer about ClF3 is given below

Q: For the substitution reaction. Draw the structure of the intermediate that forms in the rate determi...

A:

Q: Bicarbonate Buffer Prepare 100 mL of 0.200 bicarbonate buffer, pH 10, by calculating the mass of so...

A: Use the Henderson-Hasselbalch equation., pH = pka + log [conjugate base] / [weak acid]    

Q: Calculate the concentration of CaH.O42 : a. in a solution which is 0.020 M solution of H2C3H4O4. b. ...

A: Answer: Given acid is the phthalic acid which is a weak organic acid, therefore to calculate concent...

Q: High-purity benzoic acid (CH;COOH; AHxn for combustion =-3227 kJ/mol) is used as a standard for cali...

A: The heat of combustion of benzoic acid is = -3227 kJ/mol The mass of benzoic acid is = 1.221 g The h...

Q: Part A MISSED THIS? Watch IWE 15.5; Read Sections 15.6, 15.8. You can click on the Review link to ac...

A: Equilibrium constant is the ratio of equilibrium concentration of product to the equilibrium concent...

Q: Calculate the pH when 1.03 g of NaClO (FW = 74.44 g/mol) is added to 44.4 mL of 0.50 M HClO. Ignore ...

A: Answer: In this question we have to calculate the pH of the buffer made of HClO and NaClO.