Concentration pHET Lab

Pre-lab question #8: Suppose you were dissolving a metal such as zinc with hydrochloric acid. How would the particle size of the zinc affect the rate of its dissolution? As the particle size of the zinc increases, the rate of dissolution AA (decreases/increases).

Find the Final volume of buret (mL) and the Concentration of NaOH (M )

I need help with those please.

16 You need to make an aqueous solution of 0.237 M cobalt(II) fluoride for an experiment in lab, using a 250 mL volumetric flask. How much solid cobalt(II) fluoride should you add? grams Submit Answer Review Topics] [References] Use the References to access important values if needed for this question. Retry Entire Group 8 more group attempts remaining Cengage Learning Cengage Technical Support Previous Next> Save and Exit

In the simulation, select the solutions indicated below from the dropdown list at the top left corner of the simulation. The beaker will fill up to the 1.00 L mark with the solution. Arrange the acids in increasing order of acidity. Rank from lowest to highest. To rank items as equivalent, overlap them. • View Available Hint(s) Reset Help Coffee Вeer Soda pop Vomit Battery acid Milk

CHEMISTRY RATE WILL BE GIVEN! NO LONG EXPLANATION NEEDED.  ANSWER #3

Mg3(PO4)2 BaCO3 MgF₂ Most soluble Least soluble Fe(OH)3 Answer Bank

Number two plz

____________ in the soil can prevent lakes from becoming acidified due to acid rain.   sodium hydroxide   potassium nitrate   ammonia   potassium hydroxide   limestone

Short answers please

Answer the following questions with observations like the color it makes, texture, etc.

Pls Help

Check and correct the table and equations

please help I am having a difficult time answering these questions. I am submitting it as one because they are all related so please answer all of them.  Fill in the entire table and then answer the following questions. please type the answers ( show all steps, states of matter for all equations.) all these questions are related to that pre-lab table.      1. Fill in the following table with the Ksp values for any insoluble salt that forms from a metal ion in the left column and the anions in the other columns. Some have already been provided for you. If a salt is soluble in water write N/A.   a)  Why were you unable to find some of the Ksp values for some ions?   2.      In a test tube containing a precipitate of PbCrO4 in water: What are the concentrations of the lead (II) and chromate ions in equilibrium with the solid?  Show your calculations. Use the Ksp from the Prelab table above .   [Pb+2] =              M [CrO4-2] =           M 3.      How can AgCl(s) be dissolved…

please help I am having a difficult time answering these questions. I am submitting it as one because they are all related so please answer all of them.  Fill in the entire table and then answer the following questions. please type the answers ( show all steps, states of matter for all equations.) all these questions are related to that pre-lab table.    1.     Fill in the following table with the Ksp values for any insoluble salt that forms from a metal ion in the left column and the anions in the other columns. Some have already been provided for you. If a salt is soluble in water write N/A    Prelab Table.  Selected Ksp Values Metal Cl- OH- SO42- CrO42- C2O42- Ag+ 1.8 x 10-10         Pb2+ 1.7 x 10-5 1.4x10-20 1.3x10-8 2.3x10-13   Hg22+ 1.4 x 10-18         Ba2+           Ca2+           Mg2+           Na+           K+           NH4+…

Question 15 10.50 mL of 0.100 mol/L NaOH(aq) is needed to neutralize 30.00 mL of a HCl(aq) solution. a. Write a chemical equation for this reaction. a. Calculate the molar concentration of the hydrochloric acid solution. work, use video note or equation editor to show your work)

Pls help ASAP ON ALL ASKED QUESTIONS PLS PLS

Each row of the table below describes an aqueous solution at 25 °C. The second column of the table shows the initial components of the solution. • Use the checkboxes in the third column to explain the type of the initial solution. The fourth column describes a change in the solution. • Use the fifth column to predict how the change in the solution will change its pH. solution initial components initial type (check all that apply) effect of change on pH change (check one) A H₂O 0 000 0 acidic pH higher basic neutral acidic add K C104 pH lower B 80 H₂O, H Br basic neutral add Na Br O O acidic C H₂O, H Br basic neutral add NaOH pH lower acidic pH the same pH higher D H₂O basic add KOH pH lower neutral pH the same pH higher pH lower pH the same pH higher pH the same

If you have an empty burette in a burette clamp, in what order do you do these steps to fill the burette with liquid (either water for washing, or the titrant)? Drag the steps below into the correct order. Step 1: Close the tap. Step 2: Step 3: Step 4: Step 5: Step 6: Step 7: Return burette to burette clamp. Remove burette from clamp. Hold burette with top below eye level. Put plastic funnel into top of burette. Fill burette with liquid. Remove plastic funnel.

- logo H+ where H is the concentration of hydrogen ions The pH scale for acidity is defined by pH measured in moles per liter (M). %3D B10 A solution has a pH of 1.85. Calculate the concentration of hydrogen ions in moles per liter (M). The concentration of hydrogen ions is moles per liter. Question Help: D Video D Post to forum Submit Question Jump to Answer

To complete the lab report, please answer the following questions. 1. Another way of testing for pH is to use pH paper. The pH paper is coated with a chemical that changes colors when immersed into the sample being tested. The color of the paper is then compared against a color chart that shows the colors associated with the different pH values. State one disadvantage of using pH paper instead of a pH meter. Answer: 2. The pH scale is a logarithmic scale. This means that the difference between each pH unit is really a factor of ten (in terms of actual magnitude of the acidity or basicity of the substance). If the pH of grapefruit juice is 3 (pH = 3), and the pH of beer is 5 (pH = 5), how many times more acidic is grapefruit juice than beer? Answer:

this is analytical chemistry please show solution thanks

Pre Lab Questions: (Each answer is to be written as a complete sentence) What is the reason for washing the precipitate with water in Step 9? Define precipitate. Define filtrate. In Step 2, what is the purpose for rinsing the stirring rod? read the Procedure to answer the questions  Using a balance, mass between 1.50 – 2.00 grams of sodium carbonate in a pre-massed 150mL beaker. Add 20 mL of distilled water and stir thoroughly to make sure all the crystals are dissolved. Rinse the stirring rod with a little distilled water after stirring. Using a balance, mass between 1.50 – 2.00 grams of calcium chloride dihydrate in a pre-massed 50 mL beaker. Repeat Step 2 for the solution in the 50 mL beaker. Pour the calcium chloride solution into the 150mL beaker containing the sodium carbonate solution and stir. Mass a piece of filter paper. Fold the filter paper and place it into the funnel. Wet it with a little distilled water to ensure that it is stuck to the sides of the funnel. Slowly…

Part A- Relating Relative Numbers of Anions and Cations to Chemical Formulas If you have an aqueous solution that contains 1.5 mol of HCI, how many moles of ions are in the solution? O 1.0 O 1.5 O 2.0 O 2.5 O 3.0 Submit Request Answer Provide Feedback

Q Search ||| O SIMPLE REACTIONS Predicting the products of dissolution -6 Note: "major" chemical species are those present in concentrations greater than 10 mol/L. The names and chemical formulae of some chemical compounds are written in the first two columns of the table below. Each compound is soluble in water. Imagine that a few tenths of a mole of each compound is dissolved in a liter of water. Then, write down in the third column of the table the chemical formula of the major chemical species that will be present in this solution. For example, you know water itself will be present, so you can begin each list with the chemical formula for water (H₂O). compound sodium nitrate sodium hydroxide propylene glycol Explanation Check formula NaNO3 NaOH C₂H₂ (OH)₂ major species present when dissolved in water 0 99+ VUDU 09 a X Very's Uo oo.... S Ś hulu 4/5 Ki prime video Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center

Your lab assignment presentation involves putting together a presentation to show other students on how to perform titration. In other words, your presentation can be used to show other students (next term) how they can perform a titration by following your instructions and calculations. To do this presentation, we are giving you the type of acid, acetic acid, the type of base, NaOH to be used, and you will use phenolphthalein as the indicator. You will use the data given to you to be used as an example of how to solve the mathematical calculations. At the end of your presentation, you will show the unknown concentration of the acetic acid (Molarity) and will also show the % mass/ vol of the Vinegar solution. Part 1 Purpose of a titration, what is titration and why do we perform a titration? Instrumentation- what are the instruments, glassware used when performing a titration. Chemicals and Procedures. What chemicals are needed? List and explain the procedures for this experiment.…

need help with calculations for my chemistry lab! (Classic Titration 1 Lab)  first picture is the data table that was gathered during the lab in which will be used to do the calculations. second picture explains the intro, purpose, and the procedure of the whole lab as a reference if the data table or the whole thing does not make sense. I'd really appreciate it if I could get help on the calculations. Thank you!

Select all that are true for the following chemical reaction: SrCO3(s) + 2 HCl (aq) --> SrCl2 (aq) +  H2O(l) + CO2(g) Note: this is similar to one of the trickier reactions in this week's lab so you may want to make a note of it in your notebook for later reference.   Group of answer choices SrCO3 is a solid in this reaction. SrCO3 is in aqueous solution in this reaction. CO2 is a gas in this reaction H2O is a liquid in this reaction H2O is a reactant in this reaction. H2O is a product in this reaction. CO2 is in an aqueous solution in this reaction

Acid-Base Reaction A. Kremil-S and Vinegar 1. Dissolve a tablet of Kremil-S in a plastic cup with few amounts of water. Mix thoroughly. 2. Add one (1) tablespoon of vinegar to the mixture containing Kremil-S and observe the reaction. Take photos of the setup and the reaction. B. Baking Soda and Vinegar 1. Put at least five (5) tablespoons of baking soda inside the balloon using a funnel. 2. Add half a cup of vinegar to the bottle, and carefully stretch the opening of the balloon over the mouth of the bottle. 3. Drop the baking soda into the vinegar inside the bottle and observe the reaction. Oxidation-Reduction Reaction A. Vitamin C and Betadine 1. Dissolve one (1) Vitamin C tablet in a small amount of water in a cup. 2. Add dropwise amounts of Betadine while slowly stirring. Observe the reaction. B. Bleach and Betadine 1. Put a small amount of liquid bleach in a cup. If your bleach is in powder form, dissolve it in a small amount of water in a cup. 2. Add dropwise amounts of Betadine…

A student performed titration to find the concentration of acetic acid. Titrant was sodium hydroxide. He went beyond the indicator color change by adding too much titrant. How will his experimental error affect the calculated value for the concentration of unknown acetic acid? calculated value actual value. calculated value < actual value calculated value = actual value. more information is necessary this is not a source of error

In the simulation, choose each of the following solutions from the dropdown list provided in the upper left corner. The beaker will automatically fill up to the 1.00 L mark with the solution, and the pH scale displayed on the right side of the beaker will indicate the pH of the solution. Classify the following solutions as acids, bases, or neutral based on their pH values as shown in the simulation. Drag the appropriate items to their respective bins. • View Available Hint(s) Reset Help Beer Hand soap Coffee Drain cleaner Vomit Milk Soda pop Blood Water Battery acid Acid Base Neutral

CONCENTRATION DETERMINATION Buret contains NaOH solution *Sodium hydroxide solution: To 1 part reagent grade NaOH add 1 part distilled, carbon dioxide-free water by weight Erlenmeyer flask contains about 9ml of the acid and about 10 ml of distilled water made recently free from CO2 by boiling. DATA SHEET II Final Reading HCI Initial Reading HCI 9.4 Final Reading NaOH Initial Reading NaOH 10.65 10.55 1 ml HCI 1 mL NAOH mL NAOH mL NaOH mL HCL mL HCL Mean Values: 1 ml HCI = 1 mL NaOH = _mL NaOH mL HCL COMPUTATION:

please answer in the format that it is asking for below the question.

Consider four distinct physical properties: boiling point, melting point, solubility, and density. which of these physical properties do you think allows extraction to work? and why?

Hello can you please help me answer this?

I need help calculating the initial concentrations please.

Use the following data to calculate the Ksp value for each solid. a. The solubility of CdC2O4 is -4 1.2 x 107 mol/L. Ksp - b. The solubility of Bil3 is 1.32 × 10-5 mol/L. Ksp Submit Answer Try Another Version 1 item attempt remaining