-> Chem101 A neutral solution of water at a particular temperature has a concentration of OH- of 7.5 x 10-7 M. What is Kw at this temperature?

Q: How many kcal are in 21.5 kJ?

A: Hello. Since multiple questions have been posted, the first question shall only be answered in this…

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A:

Q: Convert the glucose concentration of a drink containing 1.750mM of glucose from mM (millimolar) to…

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Q: Convert 0.006Ib/s to g/s

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Q: 0.50 M NaOH used.  I need to calculate these 3 things based off the results from attached "Data…

A: Given Data: Average volume of NaOH used= 5.27 ml. Molarity of NaOH= 0.50 M Volume of vinegar used =…

Q: What specific value from the graph is needed to calculate the molar concentration of the NaOH(aq)?

A: Use the titration formula. If the titrant and analyte have a 1:1 mole ratio, the formula is molarity…

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A: The solubility of BaSO4 is = 0.0023 g/L The value of Ksp is =?

Q: A0.148-g sample of an unknown was analyzed for its P content. The SOP which was used for this…

A: We have to calculate the gravimetric factor with five decimal places according to the question.

Q: A hot tub holds 350.0 liters of water. How much energy, in kilocalories (kcal), would be required…

A: Given : Volume of water = 350.0 L Density of water = 1.000 g/mL = 1.000 Kg/L               (since 1…

Q: 1.If your temperature changes from 20oC to 25oC—how much change is there in the mass of a 10.00 mL…

A: 1. Initial temperature(T1) = 20°C                              Final temperature(T2) = 25°C Initial…

Q: 1. A compound has a mass of 45.632 grams was added to 500.0 ml of water with an initial temperature…

A: Hello. Since more than one question has been posted, the first question shall only be answered in…

Q: 5. In a flask, you heat a mixture of 735.4 g of sodium nitrate and 700.0 grams of water until all of…

A: Given that, Mass of sodium nitrate dissolved in 700 g hot water = 735.4 g Mass of sodium nitrate…

Q: A solution contains 500 mg of potassium acetate, 500 mg of potassium bicarbonate and 500 mg of…

A: The volume of the teaspoon is 2.5 ml  Thus 2.5 ml of solution contains 500 mg of potassium acetate,…

Q: A chemist adds 405.0 mL of a 0.64M potassium iodide (KI) solution toa reaction flask. Calculate the…

A: Given: Volume of solution = 405.0 mL = 0.405 L                                 (Since 1 L = 1000 mL)…

Q: is the ∆ T for 40.0 grams of

A: Q and ∆T relation is  Q = m S ∆T  Where  Q = amount of heat absorbed = 1400 cal  m = mass of water…

Q: Convert 3.97×1010 J to units of kcal.

A: By using relation between J and Kcal we can solve this problem. 3.97×1010J = 9.5 × 106 Kcal

Q: 7. Which of the following processes are chemical changes? Give reasons. a) Making a Salt Solution.…

A: There are two types of changes that can occur in a process: S.No Physical changes Chemical…

Q: An aqueous hydrochloric acid solution contains 65.0g hydrochloric acid in 500.0 ml solution. What…

A: Normality is the GM equivalent solute dissolve in 1000ml.of solution.

Q: 15 8. Look carefully at the picture on the right-hand side. (a) Name four GOOD things which you can…

A: This picture demonstrates a boy who’s performing Titration in his chemistry lab.…

Q: Ethyl acetate has a characteristic fruity odor and is used as a solvent in paint, lacquers and…

A: mass of ethyl acetate required for experiment = 6.5 x 10-2 kg = 0.065 killogram , convert this mass…

Q: 8. (3-step conversion) Howmany kilocalories in 54.3 J?

A: Given : 54.3 joules To convert into : kilocalories

Q: Write the name and number represented by each abbreviation. For example, for kW you should write kW…

A: According to the Q&A guidelines of Bartleby, I am allowed to answer only three sub-parts of…

Q: A chemist dissolves 532. mg of pure barium hydroxide in enough water to make up 70. mL of solution.…

A: POH= - Log[OH-] [OH-]= Concentration of hydroxide ion

Q: A student shakes up a plastic 2-L bottle of cafbonated beverage and then quickly opens the bottle-

A: ANS: EFFERVESCENCE  CARBONATED BEVERAGES HAVE CO2,CO2 DISSOLVED IN UNDER PRESSURE WHEN BOTTLE…

Q: A chemist makes 710.mL of mercury(I) chloride Hg2Cl2 working solution by adding distilled water to…

A:

Q: [OH-] = 1.0 x 10-7 Express the concentration to two significant figures and include the appropriate…

A: Given-> [OH^-] = 1.0 × 10^-7 M   If [H3O^+] is 1.0 × 10^-7 M => then it is neutral .

Q: Constants | Periodic Tabl The forensic technician at a crime scene has just prepared a luminol stock…

A: Given the name of the solute is luminol and solvent is water. Molar mass of solute, luminol = 177…

Q: 1. Complete the following table with the proper equivalent temperatures: °C °F K °R -40.0 77.0 698…

A: Write the conversion from C to 00F. 0F=1.8C + 32 Write the conversion from C to 00F. 0C=(0F-32)÷1.8…

Q: AHrxn AS rxn AGrxn AS universe >0 0 low T, 0 high T

A: For the Given reaction, 2NH3(g) + 3 N2O → 4N2(g) + 3 H2O(g)

Q: 2860 kcal to kj

A: Following is the appropriate answer of the given questions.

Q: A normal fasting blood sugar level is 0.0039 – 0.0055 mol / L. For a 3.0 x 10“ mL sample of blood,…

A: Molarity is a measure of concentration. It expresses the concentration as no. of moles in 1 L of the…

Q: Endothermic or Exothermic? 2 NO2(g)   → N2O4(g) + 19 kcal How do you know?

A: An exothermic reaction is defined as a reaction that releases heat and has a net negative standard…

Q: A chemist adds 1.90L of a 0.106 M potassium dichromate K2Cr2O7 solution to a reaction flask.…

A: We have to predict the millimoles of chemical added.

Q: 0.6 v/v to mL/L

A: It is given that 0.6 v/v needs to converted into mL/L, and % v/v  is defined as, mL of a solute…

Q: A generator consumes (2.690x10^1) L of fuel per hour. For how many minutes could this generator run…

A: 1 gallon = 3.7854 L 1 hour = 60 minutes

Q: How much energy, in calories, is needed to raise 8 grams of water from 26C to 41C?

A: q = mc∆T  q is the amount of heat energy required  m is the mass of substance  c is the specific…

Q: A chemist adds 55.0 mL of a 1.4M barium acetate (Ba(C,H,0,)) solution to a reaction flask. Calculate…

A: Given, Volume of Barium Acetate = 55 mL = 0.055 L Molarity of Barium Acetate = 1.4M

Q: graduated cylinder contains 31.0 mLmL of water. What is the new water level after 35.1 gg of silver…

A: Given,  Graduated cylinder contains 31 ml of water We need to calculate the new water level once a…

Q: A student, trying to standardize NBS solution using a standard Vitamin C solution (220 mg/L),…

A: Please find the below attachment.

Q: How many milliliters of 0.09% sodium chloride should be used in compounding the prescription?

A:

Q: A chemist makes 570.mL of barium chloride BaCl2 working solution by adding distilled water to…

A: Dilution equation:                                                                   M1V1 = M2V2…

Q: %3D .1 mL 441.)10 1 dt 10 I mL. %3D 441. 10 101 1°

A: So basically the question have asked to solve the unit conversation.

Q: A provider orders phenylephrine IV at 50 mcg/min. The IV bag contains 8 mg phenylephrine in 100 mL…

A: The quantities which come across during the scientific studies are named as physical quantities. The…

Q: Convert 76 kcal to kJ

A: Energy is measured in joule or calorie. 1 Kg = 1000 gram 1 kJ = 1000 joule 1 KCal = 1000 cal

Q: A chemist adds 305.0 mL of a 0.41M barium chloride (BaCl₂) solution to a reaction flask. Calculate…

A: Given,  Volume of solution = 305.0 mL                                     = 0.305 L  Concentration…

Q: It has been found that fat makes up 14%  of a 170 -lb person’s body weight. One pound of body fat…

A: Given : Mass percent of fat in body = 14 % Mass of body of person = 170 lbs. Total energy required…

Q: 1.60 Liters of a 2.00M sodium hydroxide solution, NAOH, is neutralized using 1.00M hydrochloric…

A:

Q: Na+ Ag* Ca?+ Fe2+ CI- OH Cio, PO- Answer Bank 000 00

A: It was better if you mention the solvent. I consider water as solvent.

Q: Fatty acids are stored in the body as triglicerides in adipose tissues. Consider the oxidation…

A: Solution - According to the question Fatty acid - Fatty acids are the building blocks of the fat in…

Q: A+BCAB+C What will most likely be in the container after several minutes have passed ? A. Container…

A: The reaction given is A + BC <--------------> AB + C