How many grams of KC2H3O2 are needed to prepare 2.27 L of 0.290M KC2H3O2 solution? (MM KC2H3O2 = 98.14 g/mol) show your work and round your answer to the correct number of sig figs
How many grams of KC2H3O2 are needed to prepare 2.27 L of 0.290M KC2H3O2 solution? (MM KC2H3O2 = 98.14 g/mol) show your...
How many grams of KC2H3O2 are needed to prepare 2.27 L of 0.290 M KC2H3O2 solution? (MM KC2H3O2 = 98.14 g/mol) show your work
How many grams of Na2SO4 (142.04 g/mol) are needed to prepare 125.0 mL of 2.50 mM solution of Na+? What's the concentration in ppm of Na+ in this solution?
w your work or your reasoning. How many grams of Green #3 dye (808.84 g/mol) are needed to prepare 5.00 L of a 3.08 x 10-5 M solution?
How many grams of Mg(NO3)2 (MM = 148.33 g/mol) would it take to lower the freezing point of (4.95x10^2) grams of water by 4.00°C? The freezing point depression constant of water is Kp = 1.86°C/m. Enter your answer in scientific notation with 3 sig figs. Do not include any units in your answer. Do not round any intermediate calculations. Note: Your answer is assumed to be reduced to the highest power possible. Your Answer: X10 Answer
How many mL of rubbing alcohol are needed to make 430. mL of a 17.6% (v/v) rubbing alcohol solution? show your work and round your answer to correct number of sig figs
Postlab Questions Show your work or your reasoning, 1. How many grams of Green W3 dye (808.84 g/mol) are needed to prepare 5.00L of a 3.08 x 10-5 M solution? Background The common laboratory acids such as H250. HCI, HNO3, and HC2H302 arrive in the teaching stockroom as very concentrated AQUEOUS solutions that we refer to as concentrated Hoso lag), concentrated HCl(aq), etc. You used con (concentrated) H2SO4(aq) as a catalyst in the preparation of aspirin. Calculate the molarity of...
How many grams of CrCl3.6H2O are needed to prepare 50 mL of a 200 g/L solution? Select one: a. 5.0 g b. 10.0 g c. 15.0 g d. 2.5 g e. 0.5 g f. 1.0 g
How many grams of CaCl2 are needed to make 610.3 g of a solution that is 36.5% (mm) calcium chloride in water? Note that mass is not technically the same thing as weight, but (m/m) has the same meaning as (w/w). Number g Cac How many grams of water are needed to make this solution? Number b) What is the volume percent % v/ alcohol in 739 mL of water? (Assume that volumes are additive.) of an alcohol solution made...
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 550. mL of 0.976-M solution of NH3 in order to prepare a pH = 9.15 buffer? What volume (to the nearest 0.1 mL) of 4.00-M NaOH must be added to 0.600 L of 0.300-M HNO2 to prepare a pH = 3.50 buffer?
How many grams of water are needed to prepare 250. g of a solution that is 5.00% by mass NaCl?