14_Lab_113

Please answer fast i give you upvote.

As part of this experiment you will need to determine the concentrations of Fe* and SCN ions present in test tubes 1-9. These values can be calculated using the volumes and concentrations provided in Tables 1 and 2 of the Equilibrium Lab - Procedure and the dilution equation (M,V1 = M2V2). Note: the solutions provided in the lab, and therefore the tables in the lab document, are the compounds used to prepare the solution. You must determine the concentration of the ions based on how these compounds díssociate in solution Complete the following table by filling the the calculated initial concentrations of each substance. Be sure to: Pay attention to significant figures • Round appropriately Use decimal notation (not scientific) Do not include units Test Initial [Fe3*] (M) Initial [SCN'] (M) Tube 1 3 4. 6. 7 8. 2.

Aktiv Chemistry → C < + X b Success Confirmation of QX M Your Chemistry answer is rex b Answered: How many mL o x b Answered: A student combi x app.101edu.co Time's Up! A 0.660 M solution of KCI needs to be prepared through dilution. A 2.00 M stock solution will be added to a 0.250 L volumetric flask and then water will be added to the 0.250 L mark. Determine the volume (in mL) of the 2.00 M stock solution of KCI needed to produce this solution. 1 4 7 +/- New Tab 2 5 8 mL 3 6 9 G 0 x + Submit X C x 100

show full & complete procedure. Please answer parts a), b) & c). Note they are subparts of the same question

3. Standard white vinegar you can buy in the grocery store is 5% concentration. That means 5% of the liquid vinegar is acetic acid and 95% of the solution is water. In a hardware store, you can buy industria strength vinegar, which is 30% concentration. This means that 30% of the vinegar is acetic acid, and the remaining 70% is water. Samuel does another experiment, this time with 5% vinegar and 30% vinegar. He sets up two science fair volcanoes (in no particular order), each with the same temperature, mass of baking soda and volume o vinegar. But one volcano uses 5% vinegar and the other volcano uses 30% vinegar. He measures the volume of gas production for the'first minute of each reaction, and he records the data below. Volcano # 1 Volume of gas produced (mL.) vs. Time (s) for Volcano #1 Time Volume of gas (s) produced (ml) 60 E 50 10 20 30 25 8 40 38 46 30 20 Volume of gas produced (ml) 40 50 50 60 52 of 10 53 20 40 60 80 Time (s) Volcano # 2 Volume of gas Volume of gas produced…

How do I calculate the first table ?

30jud to 28AM basu mw 5. Sodium carbonate is a reagent that may be used to standardize acids in the same way that you have used KHP in this experiment. In such a standardization it was found that a 0.498-g sample of sodium carbon- ate required 23.5 mL of a sulfuric acid solution to reach the end point for the reaction.

Gravimetric Analysis of Calcium Carbonate and Hard Water Introduction In this laboratory activity, you will develop calculating skills and facility with the techniques of gravimetric analysis. In particular, we will practice quantitative transfer and vacuum filtration. You will perform a precipitation reaction that involves preparing and combining solutions of sodium carbonate, Na2CO3, and calcium chloride, CaCl2. The balanced chemical equation for this reaction predicts the amount of precipitate that will be formed. Careful isolation, drying and weighing of the precipitate will confirm the calculations and the percent yield. Pre-Lab Questions 1. Define the term gravimetric analysis. Describe the procedure used in this activity, and identify two other common examples of gravimetric analysis.

I need help constructing graph I m not sure where to put values On the graph paper plot a graph of your reaction rates vs. concentration by using vertical scale or Y-axis representing reaction rate and a horizontal scale or X-axis representing mls of solution #1(KIO3).

QUESTION 24 In the experiment "Beer-Lambert's Law and Spectrophotometry", you prepared a calibration plot similar to the one pictured below. What is the approximate concentration of a solution whose absorbance is 0.35? Calibration Plot 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0. 0.01 0.02 0.03 0.04 0.05 Save A Click Save and Submit to save and submit. Click Save All Answers to save all wnswers. Absorbance

write down the correct answer to a, b,c, d

Reactions of Na₂CO3 * Reactions with a carbonate salt and acid are gas evolving! I Na₂CO3(aq) Na* CO3²- Na2CO3(aq) Na₂CO3 (aq) Na₂CO3(aq) Na₂CO3 (aq) Na₂CO3 (aq) Na2CO3 (aq) Na₂CO3 (aq) Na₂CO3 (aq) Na₂CO3 (aq) + + + + 2 Pb(NO3)2 (aq) H* CI HCl (aq) Na3PO4 (aq) KI (aq) CuSO4 (aq) H₂SO4 (aq) NaOH (aq) AgNO3(aq) CaCl2 (aq) HNO3(aq) →>> →> →>>> ➜>> ↑ ↑ Na Cl + H* CO3²- NaCl (aq) + [H₂CO3 (aq)] → NaCl (aq) + H₂O (1) + CO2 (s) 2 NaCl (aq) + H2₂O (1) + PAGE 123 OF 232 (g)

For lab 4, we combined baking soda with vinegar, according to the chemical equation NaHCO 3 + CH 3COOH ==== NaCH 3COO + CO 2 + H 2O Consider 3 experiments: (i) 2g baking soda + 5mL vinegar, (ii) 2g baking soda + 10mL vinegar and (iii) 2g baking soda + 20mL vinegar. The amount of CO 2 produced was highest for (iii) and lowest for (i). For these experiments, which of the following is true? Vinegar ran out first Baking soda ran out first They both ran out at the same time Neither ran out

Can I please get all final concentrations please!

9- An aqueous solution at 25 C has a H,O concentration of 2. x 10 M. Calculate the OH concentration. Be sure your answer has 1 significant digits. || M x10 I Don't Know Submit O 2022 McGraw Hill LLC. All Rights Reserved. Tems of Use Privacy Center Accessibility 5:05 5/9/20 DELL F2 F3 F4 FS F6 F7 F8 F9 F10 F11 F12 PrtSc Insert Delete %23 & Num Lock Backspace 5 8 T CU D F K Enter く0

7 Solid lead (II) nitrate is slowly added to 125 mL of a 0.190 M potassium hydroxide solution until the concentration of lead ion is 0.0547 M. The percent of hydroxide ion remaining in solution is %. Submit Answer $ 4 R LLO % 5 [Review Topics) [References Use the References to access important values if needed for this question. Retry Entire Group T Cengage Learning | Cengage Technical Support ^ 6 * 8 more group attempts remaining MacBook Pro G H 2 & 7 A J * 0 8 ( 9 UD U K F 0 ) O ◆ P | Previous Email Instructor { [ + 11 = Next> Save and Exit } ]

What reactants are used in the net ionic equation of the Chemical Kinetic reaction? 2- 103²- and SO3™ SO3²- and 103 O 103² and SO3²- 2- OSO3 and 103

rofiles Tab Window Help D☎ ☎ a 8 O What volume of a 0.352 M hyd x + l?deploymentid=5735112480241329813180832311&eISBN=9781305862883&id=1707786068&snapshotid=33225... ✰ - Cengage Learning XAM HOMEWORK Module 9 ack APR 17 X Submit Answer on Concentrations: This is group attempt 1 of 10 In the laboratory you dissolve 15.4 g of zinc bromide in a volumetric flask and add water to a total volume of 250 mL. What is the molarity of the solution? MindTap - Cengage Learning X Use the References to access important values if needed for this question. What is the concentration of the zinc cation? tv References What is the concentration of the bromide anion? I M. Autosaved at 10:58 PM M. M. ZAG Mon Apr 17 W 5.3 i 0 > Regenerate Grou Ne:

Based on this student data, calculate the average molarity of the NaOH solution. Standard: KHP = potassium hydrogen phthalate, MM 204.4 g/mol Student Data Trial 1 E KHP mL initial: NaOH mL final: NaOH 2.02 0.57 19.25 Trial 2 2.05 19.25 39.80 Trial 3 1.99 1.65 20.75

i) How many moles of hydrochloric acid were there in the volume of acid added in the titration? ii) How many moles of calcium hydroxide were there in the 25 cm sample of solution that the student used in the titration? iii) What was the concentration of the calcium hydroxide solution in mol/dm?

Part A) A 10.0 mL sample of 0.250 mol/L NiF2(aq) is mixed with 20.0 mL of 0.0900 mol/L NaOH(aq) and then diluted to a final volume of 100. mL.Calculate the concentration of Ni2+ ions in the 100 mL mixture before the reaction starts. Express your answer to three significant figures.ksp: 5.48e-16

Trial 1 Trial 2 Trial 3 Trial 4 Mass of KHC;H4O4 (KHP) 2.0158 KHP 1.9657 KHP 2.0053 KHP |1.9801 KHP Initial buret reading 0.00 M |0.00 M 0.00 M |0.00 M Final buret reading 31.04 M 30.83 M 30.81 M 30.50 M Volume of NaOH 0.03104 L 0.03083 L 0.03081 L 0.0305 L Results table Trial 1 Trial 2 Trial 3 Trial 4 Moles of KHP 0.00987 0.00962 0.00982 0.00969 Moles of NaOH 0.00987 0.00962 0.00982 0.00982 Volume of NaOH (L) 0.03104 L 0.03083 L 0.03081 L 0.0305 L Molarity of NaOH 0.31797 3.12033 0.31883 3.2196 L Average molarity of NaOH Sample calculation: In the space below show complete calculations for moles of KHP and molarity of NaOH using data from TRIAL 1 only. Include formulas and units.