Calculate a) the mole fraction b) the molality of the solution. A sulfuric acid solution has a density of 1.8g/ml and is 87% H2SO4 by mass, what and the molarity and the molality for this solution? (a) Given that the molar mass of...
1. calculate the mole fraction of NaCl in a solution prepared by dissolving 117 g NaCl in 1.29 kg H2O? 2. a 3.140 molality solution of NaCl is prepared. how many grams of NaCl are present in a sample How many grams of Sodium chloride are in 53.2 g of solution that i...
Step 2: Identify the Given ValuesFrom the question, we know:- Molality (m) = 1.55 m- Mass of solvent (water) = 2 kg Step 3: Calculate the Number of Moles of Ethyl AlcoholUsing the formula for molality, we can rearrange it to find the number of moles of solute (ethyl alcohol):Numb...
How many grams of sucrose (C_{12}H_{22}O_{11}) must be dissolved in 200 g water to make a solution in which the mole fraction of sucrose is 0.2? Give your answer in units of g. Calculate the amount of water (in grams) that must be...
The oxygen to water mole ratio is 1:2, but while calculating no. of oxygen atoms in a given mole of water, we use 1 mole of O_2 atoms/1 mole of H_2O. Why? A solution consists of 12 g of sodium acetate in 100 g of water. Determine the mola...
How many grams of KMnO_4 would you need to make 1 L of a 2M solution? (Formula weight of 158.04 g/mol.) How many grams of MgSO4 (mM= 120 g/mol) must be added to 147 grams of water to make a solution with a colligative molality of 0.250 m?
A sodium hydroxide solution that contains 50 grams of NaOH per L of solution has a density of 1.13 g/mL. Calculate the molality of the NaOH in this solution. Record your answer to 2 decimal spaces. To make a 2000 mL of 0.5 percent ...
A solution is made up of a solute and a solvent. The relative amount of solute dissolved in the solvent is known as the solution's concentration. The most commonly used expressions of concentration are molarity, molality, mass percent, volume per...