What is the concentration of NO3-ions in a solution prepared by dissolving 20.0 g of Ca(NO3)2...
A solution of MgCl2 is prepared by dissolving 14.5 g of the solute in enough water to make 750.0 mL of solutions. What is the molarity of the Mecly solution AND what is the molarity of the anion in this solution? 0.203 M, 0.203 M 0.0444 M.0.0888M 2.03 M, 4.06 M 0.203 M, 0.406 M
What is the concentration (m) of ions in a solution that is prepared by dissolving 5.66 g of K2SO4 (174 g/mol) in 1.02 liter of water? Assume the density to be 1 g/mL. to the thousandth
A solution is prepared by dissolving 0.0034 g Ca(OH)2 in enough water to prepare a 250 mL solution. what is the pH of the solution if Ca(OH)2 completely dissociates producing 2 OH for every 1 Ca
Calculate the concentrations of hydroxide and hydronium ions in a solution prepared by dissolving 0.471 g of solid NaOH in enough water to make 225 mL of solution. Kw = 1.0E-14. Hydroxide ion concentration? M The number of significant digits is set to 3; the tolerance is +/-4% LINK TO TEXT Hydronium ion concentration? M The number of significant digits is set to 3; the tolerance is +/-4%
Calculate 1. the molarity of solution prepared by dissolving 14.7 g of Ca(NO)2 in enough a water to make 750. mL of solution. (5 pts) 2. A cup of coffee may contain as much as 300. mg of caffeine, CHo02. Calculate the molarity of caffeine in one cup of coffee. (4 cups 1L) (5 pts) 3, How much of a 2.75 M solution of AgNO3 (in mL) is needed to make 1.25 L ofa 0.150 M solution of this same...
What is the molarity of a solution prepared by dissolving 5.90 grams of calcium nitrite [Ca(NO2)2, molar mass=132.10 g/mol] in enough water to make a 106.0 mL soln?
Solution A is prepared by dissolving 89.4 g of Na3PO4 in enough water to make 1.50 L of solution. Solution B is 2.5 L of 0.696 M Na2SO4. a) What is the molar concentration of Na3PO4 in Solution A? 0.36 M b) How many millilitres of Solution A will give 2.50 g of Na3PO4? 41.95 mL c) A 50.0 mL sample of Solution B is mixed with a 75.00 mL sample of Solution A. Calculate the concentration of Na+ ions...
QUESTION 1 43.2 mL of aqueous 0.255 M Pb(NO3)2 is mixed with 36.1 mL of 0.415 M NaCl. The equation for the precipitate reaction is: Pb(NO3)2 (aq) + 2 NaCl (aq) --> PbCl2 (s) + 2 NaNO3 (aq) How many moles of PbCl2 are formed? (with correct sig figs) QUESTION 2 What volume (in mL!!!) of 1.28 M HCl is required to react with 3.33 g of zinc (65.41 g/mol) according to the following reaction? Zn(s) + 2 HCl (aq)...
1 UUTIUSIS 2. What is the concentration of a solution prepared by dissolving 30 grams of Sodium Chloride in 45 ml of water? Express the concentration in % (m/v) 3. What is the concentration of a solution prepared by dissolving 23 ml of HCl to a final volume of 400ml? Express the concentration in % (v/v).
QUESTION 8 What is the mass percent of a solution prepared by dissolving 18.9 grams of solid into 39.5 grams of water? OA) 47.8% O B) 58.4% C) 32.4% OD) The identity of the compound must be known. E) none of the above QUESTION 9 1 points What is the molarity of a solution prepared by dissolving 54.3 g of Ca(NO3)2 into 355 ml of water? A) 0.331 M B) 0.932 M C) 0.117 M D) 1.99 M E) none...