Question

Part 1 (1 point) A chemist makes up a solution by dissolving 25.0 g of Mg(NO3)2 in enough water to produce a final solution volume of 141 mL. To calculate the molarity of the solution, what additional information is needed? And See Periodic Table ’See Hint Choose one: the molar mass of Mg(NO3)2 the volume of water used the mass of the water added the density of the Mg(NO3)2 Part 2 (1 point) See Hint Calculate the number of moles of Mg(NO3)2 used to make up this solution. 25.0 g of Mg(NO3)2 is equivalent to mol Mg(NO3)2 10/15 SUBMIT ANSWER 1 OF 15 QUESTIONS COMPLETED 名 3 command option option command


media%2Fd09%2Fd09e526c-58f3-4623-9b92-d9


0 0
Add a comment Improve this question Transcribed image text
Know the answer?
Add Answer to:
Part 1 (1 point) A chemist makes up a solution by dissolving 25.0 g of Mg(NO3)2...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A) A chemist prepares a solution by adding 304 mg of Co(NO3)2 (MW = 182.94 g/mol)...

    A) A chemist prepares a solution by adding 304 mg of Co(NO3)2 (MW = 182.94 g/mol) to a volumetric flask, and then adding water until the total volume of the contents of the flask reaches the calibration line that indicates 100 mL. Determine the molarity of the prepared solution. B) Determine the mass of chloride (MW = 35.45 g/mol) in grams present in 100mL of a 0.289 M solution of aqueous FeCl3 (iron(III) chloride). C) A beaker contains 250 mL...

  • Just answer part 2 and 3 please (0.3 point) Part 1 ii See Periodic TableSee Hint A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 355 mL of solution. How ma...

    Just answer part 2 and 3 please (0.3 point) Part 1 ii See Periodic TableSee Hint A solution is created by dissolving 12.5 grams of ammonium chloride in enough water to make 355 mL of solution. How many moles of ammonium chloride are present in the resulting solution? moles of NH4CI 0.233 When chemists work with solid materials, we simply weigh out amounts of solid reagents and calculate mole amounts when thinking about stoichiometry. However, when we dissolve a solid...

  • A solution was made by dissolving 5.60 mg of hemoglobin in water to give a final...

    A solution was made by dissolving 5.60 mg of hemoglobin in water to give a final volume of 1.00 mL. The osmotic pressure of this solution was 2.14×10-3 atm at 25.0°C. Calculate the molar mass of hemoglobin, which is a molecular compound and a nonelectrolyte. Give your answer in g/mol.

  • Part B: A chemist prepares a solution by adding 415 mg of CoCl2 (MW = 129.84...

    Part B: A chemist prepares a solution by adding 415 mg of CoCl2 (MW = 129.84 g/mol ) to a volumetric flask, and then adding water until the total volume of the contents of the flask reaches the calibration line that indicates 100 mL. Determine the molarity of the prepared solution. (moles per litre, 3 sig figs) Part C: Determine the mass of chloride (MW = 35.45 g/mol ) in grams present in 100 mL of a 0.166 M solution...

  • A solution was prepared by dissolving 39.0g of KCl in 225 g of water. 1. Calculate...

    A solution was prepared by dissolving 39.0g of KCl in 225 g of water. 1. Calculate the mass percent of KCl in the solution. 2. Calculate the mole fraction of KCl in the solution. 3. Calculate the molarity of KCl in the solution if the total volume of the solution is 239 mL. 4. Calculate the molality of KCl in the solution.

  • Part 2 (1 point) ♡ See Hint A chemist titrates a 25.0 mL sample of 0.104...

    Part 2 (1 point) ♡ See Hint A chemist titrates a 25.0 mL sample of 0.104 Mbenzoic acid (C6H5COOH) against a 0.100 M solution of NaOH. The overall reaction is shown by the equation below: CH2COOH(aq) + NaOH(aq) →→ CH,COONa(aq) +H20(1) The Ka value for benzoic acid is 6.28 x 10-5. Calculate the pH at the start of the titration, before any NaOH has been added. Give your answer correctly to two places after the decimal.

  • A chemist prepares a solution by adding 320 mg of K2Cr2O7 (MW = 294.19 g/mol )...

    A chemist prepares a solution by adding 320 mg of K2Cr2O7 (MW = 294.19 g/mol ) to a volumetric flask, and then adding water until the total volume of the contents of the flask reaches the calibration line that indicates 750 mL . Determine the molarity of the prepared solution.

  • A chemist prepares a solution by adding 348 mg of K2Cr2O7 (MW = 294.19 g/mol) to...

    A chemist prepares a solution by adding 348 mg of K2Cr2O7 (MW = 294.19 g/mol) to a volumetric flask, and then adding water until the total volume of the contents of the flask reaches the calibration line that indicates 750 mL . Determine the molarity of the prepared solution. Express the concentration in moles per liter to three significant figures. ► View Available Hint(s) Templates Symbols undo redo 'reset keyboard shortcuts help concentration = mol/L Submit Previous Answers Determine the...

  • An aqueous solution was made up by dissolving 34.5 g of sucrose, C12H22O11, in enough water...

    An aqueous solution was made up by dissolving 34.5 g of sucrose, C12H22O11, in enough water to make 250 cm^3 of solution. The mass density of the resulting solution was 1040 kg/m^3. Calculate the molar concentration and molarity of sucrose in the solution. Answer: 0,388 mol/kg

  • Question 17 A solution is prepared by dissolving 45 g sodium carbonate, Na2CO3, in enough water...

    Question 17 A solution is prepared by dissolving 45 g sodium carbonate, Na2CO3, in enough water to make 200 mL of solution. If the density of the solution is 1.1094 g/mL, what is the % mass of the solution? Question 18 Calculate the molarity of a 4.628 m solution of Sr(NO3)2 in H2O. The density of this solution is 1 g/mL Include units. Question 19 What is the molarity of a sodium chloride solution prepared by diluting 2.1 mL of...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT