A solution is prepared by combining 8 g of sodium hydroxide (NaHO) with 245 g of H2O and the solution has a density of 1.2 g/mL.   A. What is the mass/mass percent of the sodium hydroxide solution ?   B. What is the mass/volume percent of the sodium hydroxide solution ?

. A Chemistry 20 student is provided with two sodium carbonate solutions for a laboratory activity. Solution A has a concentration of 3.48 10^3 ppm and Solution B has a concentration of 0.46% W/V. Which solution is more concentrated?

a 64.0mL portion of a 1.60M solution is diluted to a total volume of 238mL. A 119mL portion of that solution is diluted by adding 125mL of water. what is the final concentration? assume the volumes are additive.

How many grams of chlorine gas are needed to make 5.60 x 10° g of a solution that is 1.40 ppm chlorine by mass? mass: g C.

1. What is the molarity of the solution that contains 0.050 g of aluminum nitride AIN in 22.5 L of solution? 2. Calculate the number of moles of NaCl solute present in 335 ml of 20.0 M NaCl solution 3. How much NaCl (s) do you need to prepare 435 mL of a 2.5 % (m/v) NaCl solution? 4. The hydronium ion concentration in a given solution is 1.8 x 104. What is the concentration of the hydroxide ions solution. What is the pH of the above solution.

A 50.0 mL portion of a 1.60 M solution is diluted to a total volume of 288 mL. A 144 mL portion of that solution is diluted by adding 115 mL of water. What is the final concentration? Assume the volumes are additive. concentration: M MacBook Air

1a. How many moles of M9SO, are contained in 50. mL of a 3.0 M solution? 1b. How many grams of CaClą are dissolved in 80.0 mL of a 0.75 M solution? 1c. What is the molarity of 300 ml of a solution that contains 0.60 mol of dissolved ammonia?

0.22g of sodium carbonate (105.9888 g/mol) is dissolved into 50mL of water. It is labeled "Solution 1". a) What is the molarity of the solution? 5mL of the sodium carbonate solution is then diluted with 45 mL of water. It is labeled "Solution 2". b) What is the molarity of the solution?

A 5.00 mL sample of solution has 1.28 g of calcium ions. Assume that the density of the solution is 1.2 g/mL. A. Calculate the concentration of calcium ions in molarity. B. Calculate the concentration of calcium ions in molality. C. Calculate the concentration of calcium ions in % (m/m).

Percent by volume (% v/v) of a substance is a term that represents the concentration of the substance. It refers to mL of the substance per 100 mL of its solution in water. A bleach solution bought from a Walmart store contains 5% sodium hypochlorite by volume. How many mL of the bleach solution should be taken to make 2.5 L of 0.1% sodium hypochlorite solution?