Using the stock solution above, the student made additional dilutions, with the final volumes below. Calculate the concentration of iron(III) thiocyanate ion in Standard 2. For grading purposes, report your answer in mM with four places after the decimal.

- Part C Write a balanced ionic equation for this acid-base reaction: Ca(OH)2 (aq) + 2CH3CO₂H(aq) → Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦ A chemical reaction does not occur for this question. Submit Request Answer Part D ? Write net ionic equation for this acid-base reaction: Ca(OH)2 (aq) + 2CH3CO₂H(aq) → Express your answer as a chemical equation. Identify all of the phases in your answer.

If 21 mL of 3.2 x 10–5 M magnesium chloride and 15 mL of 1.5 x 10–4 M sodium fluoride are mixed, what are the concentrations of magnesium ion, chloride ion, sodium ion, and fluoride ion after mixing? Some choices may be used more than once, and keep an extra sig fig.   Question 9 options:     chloride ion     sodium ion     magnesium ion     fluoride ion   1.   1.87 x 10–5 M 2.   3.73 x 10–5 M 3.   6.25 x 10–5 M 4.   1.25 x 10–4 M 5.   1.50 x 10–4 M 6.   3.20 x 10–5 M 7.   1.50 x 10–4 M Answer and Explain

Please use the given info to find x in the equation (Hint: y = 0.0472x+0.9895).

2- A sample of an acid 2.4 g dissolved in 100 ml. water. This sample was titrated with 40 ml sodium hydroxide (0.10 N). Find out the molecular mass of the acid knowing that it is mono-equivalent.

Consider the neutralization reaction 2 HNO, (aq)+Ba(OH), (aq) 2 H, O(1)+Ba(NO,),(aq) A 0.115 L sample of an unknown HNO, solution required 36.7 mL of 0.250 M Ba(OH), for complete neutralization. What is the concentration of the HNO, solution? concentration: M * TOOLS x10

Equal volumes of Solutions 2 and 3 were mixed in the lab. Suggest a measurement that could be made in the lab to provide evidence that a chemical reaction occurred when Solutions 2 and 3 were mixed.

Part B A chemist has a bottle containing 0.57 M CuCl2. How many milliliters of this solution should the chemist use to add 2.0 grams of CuCl2 to her reaction?   3.5 mL 26 mL 13 mL 0.015 mL

Just number 3 please!

You are asked to prepare a 1.000 L solution of 4.5 M you commit a user error while preparing this solution. Assumed volume Volumetric error Preparation details Added water 2.0 cm above the line, which corresponds to 8.2 mL (0.0082 L) additional solution volume C6H12O6 (glucose; molar mass = 180.16 g/mol) in a lab by dissolving 811.0 g of glucose in water. Consider the following two scenarios in whic Prepared in a beaker Prepared in a volumetric flask 1.000 L You add the glucose to a volumetric flask and then add water until it dissolves. The water bottle you are using has a worn tip, and you inadvertently add too much water such that the meniscus is above the line. The diameter of the neck of the volumetric flask is 2.29 cm. 811.0 g glucose Concentration: You decide to evaluate and compare the errors you made while preparing the solutions using the different methods. Calculate the actual concentrations of the intended 4.5 M glucose solutions prepared by each method based on their…