# 2 only not 4 of water In another experiment, a student dissolved 78.35 g FeCl3-6...
Im sorry please ignore the first 2 U. A solution is prepared by dissolving 50.0 g cesium chloride in 50.0 g water. The volume of the solution is 63.3 mL. Calculate the mass percent, molarity, molality, and mole fraction of the cesium chloride. What can happen when unions decide to strike? Choose four correct answers. Workers can lose their jobs. Factory production can be stopped. Police will prohibit the strike. Working conditions can end up improving. Strikes sometimes can turn...
1 2 points A 52.2 g sample of NaOH is dissolved in water and the solution is diluted to give a final volume of 4.36 liters. Calculate the molarity of the solution. Use 40.0 as the molar mass for NaOH. Type your answer. Previous
2 and 3 mod resource/contern ms for ench of the following , electricity O2 (g) NaOH(aq) HCl (aq) (a) Decomposition: (b) Combination: NaCl() SO2(g) + Nici faq) + + → + → ble replacement: Zn (s) → (d) Single replacement: 2. Which of the following are RedOx reactions? Write half equations and state the oxidizing and reducing agents for the RedOx reactions, (a) (b) AgNO3(aq) + NaCI(aq) → AgCl(s) + NaNO3(oq) 6 Li(s) + N2(g) → 2 LiaN(s) 3. When...
2. A student prepared a stock solution by dissolving 15.0 g of NaOH in enough water to make 150 mL of a stock solution. She then took 22.5 mL of the stock solution and diluted it with enough water to make 250. mL of a working solution. (5 pts. each) A. What is the molar concentration of NaOH in the stock solution? # of moles x 1000 Naot mass= 15,09 g molanty volume of source (m) Mol 40 g/mol voline...
Principles of Inorganic Chemistry! Week 5 Effect of Temperature on Solubility of a Salt In this experiment, you will study the effect of changing temperature on the amount of solute that will dissolve in a given amount of water. Water solubility is an important physical property in chemistry, and is often expressed as the mass of solute that dissolves in 100 g of water at a certain temperature. In this experiment, you will completely dissolve different quantities of potassium nitrate,...
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
Can you answer question 4 & 5? The experiment and porcedure is posted below Question 4 & 5 CHM3120C Analytical Chemistry Lab Lab 7. Spectrophotometric Determination of Iron in Mohr's Salt with o-Phenanthroline Required Reagents and Supplies: 50 mL of 0.0005M -0.0006 M of Mohr's solution (unknown), 10 g of Hydroxylamine hydrochloride (NH2OH, HCI), 500 mL of o-phenanthroline solution (contains 0.5 g of o-phenanthroline monohydrate), 83 g of sodium acetate (NaOAc. 3H20) in 500 mL of water (for 1.2 M...
i need help with 2,4,5,8,9,10-12 6 pts Question 2 A student designs an experiment to test the hypothesis: "If a solution of sucrose in water has a higher concentration, it will attract more ants." The student makes sucrose solutions with concentrations of 1.00,5.00, 10.50, 20.00 and 25.00% sucrose by mass, then leaves the solutions outside. After some time has passed, the student counts the number of ants that are in each beaker. The independent variable for this experiment is the:...