W-assignment Saved 6 attempts left Check my work How many g of solute are needed to...
Question 13 (of 20) 1.00 points Ch. Ex. 42 mass percent composition- use with solution mass values to calculate solute mass values (Pool 2 of 2) 2 5 attempts left Check my work How many g of solute are needed to prepare the following solution 1.50 x 102 g of 350% (mm) Nazco, Enter your answer in the provided box. Report problem Hint g Na CO
WILL GIVE THUMBS UP 3 attempts left Check my work Enter your answer in the provided box. points A sample of 0.5760 g of an unknown compound containing barium ions (Ba) is dissolved in water and treated with an excess of Na,C0y. If the mass of the BaCO, precipitate formed is 0.5343 . what is the percent by mass of Ba in the original unknown compound? ebook Print References 3 attempts left Check my work Enter your answer in the...
3 attempts left Check my work Enter your answer in the provided box. Calculate the number of grams of solute in 137.1 mL of 0.258 M calcium acetate. g solute
Weight ... How to C ework i Saved 3 attempts left Check my work What is the temperature (°C) of 1.75 g of O, gas occupying 3.5 L at 1.00 atm? Enter your answer in the box provided. lºc
2 attempts left Check my work Enter your answer in the provided box. A solution of 1.15 g of solute dissolved in 25.0 mL of H20 at 25°C has a boiling point of 100.750°C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally (d of H20 at 25°C = 0.997 g/mL)? g/mol
Saved ork 2 attempts left Check my work Enter your answer in the provided box. In ice-cream making, the temperature of the ingredients is kept below 0.0°C in an ice-salt bath. Assuming that NaCl dissolves completely and forms an ideal solution, what mass of it is needed to lower the melting point of 4.3 kg of ice to -5.0°C?(Ky of water is 1.86°C/m.) The answer should be rounded to 2 significant figures.
3 attempts left Check my work How many milliliters of 2.2 M NaOH are needed to neutralize 8.5 mL of a 7.5 M H2SO4 solution? ml NaOH solution
3 attempts left Check my work How many milliliters of 2.8 M NaOH are needed to neutralize 3.6 mL of a 6.3 M H2SO4 solution? mL NaOH solution
Saved 1 attempts left Check my work Enter your answer in the provided box. Hydrogen sulfide decomposes according to the following reaction, for which K. = 9.30 x 10-8 at 700°C: 2 H2S(g) = 2 H2(g) + S2(9) If 0.49 mol of H2S is placed in a 3.0-L container, what is the equilibrium concentration of Hz() at 700° C? 0.0056 M
Saved 3 attempts left Check my work Enter your answer in the provided box. When 161.0 mL of water at 26.0°C is mixed with 91.0 mL of water at 85.0°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.) PC < Prex Nexo 7 of 14 W