Chem Q1 Question 11

Final Burette Reading Initial Burette Reading Mass of flask + water (after adding aliquot) Mass of flask (before adding aliquot) Approx. 10 mL Aliquot 10.93 mL 0.84 mL 105.49 g 95.63 g Approx. 15 mL Aliquot 25.91 mL 10.93 mL 120. 28 g 105.49 g What is the density of the approx. 10 mL aliquot, in g/mL? Report your answer to the correct number of significant figures and only report the numerical value (no units).

A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In a 0.07750.0775 L sample, the chemist measures 327327 μg of nitrate. Express the concentration of nitrate in parts per million (ppm) and parts per billion (ppb). Assume the density of the river water sample is 1.00 g/mL. concentration: _____ ppmppm concentration: _____ppb

Matti is given two bottles of copper (II) sulfate solutions in her senior high chemistry lab. She is told that one bottle contains a saturated solution and the other one contains an unsaturated solution. The solutions are the exact same color and have no particles in the bottles. Describe what Matti can do to distinguish between the two solutions. A- 米 U X2 x? #3 X Next page age You are logged in as Kaylee Krys (Log out) VLL Chemistry CP 2021-2022 (Fickett). Get the mobile app MacBook Air F8 O00 F4 F5 F6 F2 F3 & * @ # $ 7 9 2 3 4 Q W E R T Y А S D F G H M Y B

All of the work for this question has been done. The Professor asked an additional question that I am struggling with. The question is for part 3, “Why is there no nitrogen in the media?” Can you please explain? Thank you

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

AAAAAAAA Calculate the Aliquot Volume that must be transferred to the glassware for the dilution 5. You want to prepare 500 ml of 0.500 mol/l solution. The stock solution concentration is 4.00 mol/L. 6. You want to prepare 250 ml of 0.200 mol/l solution. The stock solution concentration is 5.00 mol/L. 7. You want to prepare 1000 ml of 0.060 mol/l solution. The stock solution concentration is 3.00 mol/L. BLIVEWORKSHEETS 8. You want to prepare 2000 ml of 1.50 mol/L solution. The stock solution concentration is 8.00 mol/L.

Full Screen O Accessibility A saturated lead(II) chloride solution has a chloride concentration of 3.24 x 10-2 mol/L. What is the Ksp? Put your answer in scientific notation and round to two decimal places. Ksp = Check Answer You can check your answer 4 more times before the question is locked. • Previous MacBook Air

Name the following Fe(NO3)2

A chemist samples a river's water to measure the amount of fertilizer runoff from the area farms. In a 0.0775 L sample, the chemist measures 327 μg of nitrate. Express the concentration of nitrate in parts per million (ppm) and parts per billion (ppb). Assume the density of the river water sample is 1.00 g/mL. concentration: ______ppmppm concentration:_______ppb

Suppose that you heated the hydrated copper (II) sulphate in a test tube, instead of a beaker. How might this affect your results? 4 MAY 19 ... MacBook Pro & * %23 $ 2 3 4 5 6 7 E Y U G H J K C V M MOSISO command option command レー

Based on the given data, determine the vitamin C content (in weight %) in your tablet and orange juice powder. Show your calculations.

Research Project P X Research Project F X Paraphrasing Tool Why Are Healthy E X CDC Improving Your Eat X Lab Report: Soluti x Course Home New Tab openvellum.ecollege.com/course.html?courseld=16519516&OpenVellumHMAC=db2c21b62c49dad8f42838d80fceb3b7#10001 Apps Yahoo Mail YouTube Maps Best Free PowerP... Google Drive Academic Search I Downloads e University Librarie... E UNIVERSITY POR... Student Detail Sc... I Review I Constants I Periodic Table Scores Calculate the number of moles in 5.00 g of each of the following: Part C eТext CS2 Document Sharing Express your answer in moles. User Settings ΑΣφ ? Course Tools > n = mole Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Starting with 5.00 g of CS2, set up the calculation so that the molar mass of CS2 is a conversion factor where the unwanted unit of grams cancels out and the desired unit mole remains. Part D CazN2 Express your answer in moles. ? n = mol Submit Request Answer P Pearson Copyright © 2021…

Determine the amount in grams of KCI that exists in 20.3 g of a solution that contains 1.14 % KCl by mass X STARTING AMOUNT RESET 3 ANSWER ADD FACTOR * ( ) 0.001 1000 %m KCI 6.022 x 10²3 20.3 mol KCI 74.55 17.8 g solution 100 1.14 g KCI 1450 1 g KCl/mol 0.272 10 0.014 23.1 0.231 0.1 0.01 Tap here or pull up for additional resources

Lab Data Reevaluate your calculations. Collected Volume sodium carbonate (mL) 99.0 Molarity sodium carbonate (M) 0.10 Volume calcium chloride (mL) 100.0 Molarity calcium chloride (M) 0.10 Observations The substance turns from clear liquid to a cloudy white substance. Mass filter paper (g) 0.27 Mass filter paper + precipitate (g) 1.14 Calculated Observed mass calcium 0.87 carbonate (g) MY NOTES Identify limiting reactant Sodium carbonate Expected mass calcium carbonate (g) Percent yield (%) How to calculate theoretical yield and percent yield e Type here to search 近

st Your Knowledge Question 4 Question 4 of 4 4. Match each term to the best description. Dietary 1,000 calories Kilocalorie Calorie A unit of energy calorie (cal) Energy released from food (also called kilocalories) Water is 1.00 cal/g°C Specific heat capacity Check Answer Next ALwater IdcLUI S. Test Your Knowledge I I I I

A substance has a solubility of 12.5 g per 100 mL of solvent at 100 degrees celsius and 2.45 g per 100 mL of solvent at 10 degrees celsius. How many grams of the substance can dissolve in 25 mL of solvent at 10 degrees celcius.   _______ grams can dissolve in 25 mL at 100 degrees    ____ grams can dissolve in 25 mL at 100 degrees celsius.

$ F4 An aqueous solution of 2.87 M hydrochloric acid, HCl, has a density of 1.05 g/mL. The percent by mass of HCl in the solution is %. Submit Answer % 5 T G F5 Retry Entire Group 9 more group attempts remaining 6 Cengage Learning | Cengage Technical Support Y H [Review Topics] [References] Use the References to access important values if needed for this question. MacBook Air F6 & 7 gilinent-take F7 8 00 1 DII FB K ( 9 F9 0 L ) O A F10 P Chapter Previous + 11 X Next ☐ Save and Exit OWLY S deles

A chemist prepares a solution of silver perchlorate (AgCIO, by measuring out 1.07 kg of silver perchlorate into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's silver perchlorate solution. Round your answer to 3 significant digits. I mol L 10 Ar Explanation Check 2022 McGraw Hill LLC All Rights Reserved. Terms of Use Privacy Center ACcessibility 80 F 8.37 AM Cloudy 令 4/02022 DELL F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrtScr Insert Delete PgUp PgDn Hom %23 V. Num Lock Backspace | 3 4 8 %24

A solution is contaminated with traces of cadmium, manganese, and cobalt. Which option would be the safest way to make it safer for human consumption? ksp OH- CO32- S2- Cd2+ 2.5x10-14 1.8x10-14 8x10-28 Mn2+ 1.6x10-13 5.0x10-10 2x10-53 Co2+ 1.3x10-15 1.0x10-10 5x10-22 A bubble carbon dioxide into the water B raise the pH to about 12 C lower the pH to about 2 D increase the sulfide level

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NaOH Concentration (M): 0.09669M   Trial 1: Inital Volume of NaOH: 0.55mL Final Volume of NaOH: 28.25 mL  Trail 2:  Intial Volume of NaOH: 18.1 mL Final Volume of NaOH: 46.1 mL   Concentration of HCl Solution Subtract the initial buret reading from the end point reading. Convert the readings to liters by dividing by 1000.     Solve this equation for the concentration of HCl:                  (CHCl)  (0.01000 liters )    =     (CNaOH)  (volume of NaOH in liters).                CNaOH is the normality of the NaOH you recorded from the bottle.       Average the two HCl concentrations.

Which of the labeled points in the graph below represents the equivalence point? E 14.00 10.00 OA B D 6.00 4.00 0.00 9.00 2.00 D 4,00 6.00 Volume NOR, 4 KOO 10.00

< STARTING AMOUNT X A brine solution is 3.50% NaCl by mass. Given that its density is 1.071 g/mL , determine the quantity of liters of solution that contains 5.00 moles of NaCl 5.00 ADD FACTOR 0.1 *( ) 3.50 10 35.45 Question 29 of 33 1.071 0.01 8.03 x 1022 1000 100 ANSWER 7.80 22.99 0.0156 L solution g NaCl/mL g solution mL solution kg solution g NaCl/g solution 58.44 6.022 x 1023 0.0780 moles of NaCl mol NaCl RESET 0.001 2 1 g NaCl 1.56

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How many milligrams of strontium carbonate, SrCO3, will dissolve in 4.000 L of deionized water at 25°C? The Kgp for Srcoz at 25°C is 5.60 x 10°10 and its molar mass is 147.63 g/mol. Input your answer in units of mg to one decimal place. Do NOT input units. Do not use scientific notation. Your Answer: Answer

A chemistry student weighs out 0.0457 g of formic acid (HCHO,) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1100 M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Round your answer to 3 significant digits. mL x10 Explanation Check O 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibil 80 F Cloudy DELL F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrtScr Insert Delete "R Nug $4 & Backspace 3 4 7. 8 * 00

Concentration of A (M) 4.5 450 minutes 550 minutes 400 minutes 500 minutes 600 minutes 4 3.5 3 2 1.5 1 0.5 0 0 50 100 150 At what time is the concentration of A 0.125 M? 200 250 Time (Minutes) 300 Figure for Questions 2 350 400 450

Write dimly, brightly, not at all to the intensity and classify what kind the chemical is depending on its electrical conductivity

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Q11 chapter 15 preparing solutions Solve Asap please