Concentration pHET Lab

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

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 )

L.O Page View Read aloud V Draw A Highlight Erase A chemist tries to dissolve a solid ionic compound called "X" in water at 25°C. He adds 100 mL of water to a beaker equipped with a stirrer on a balance. While slowly adding X to the beaker, he measures the mass of X added and, at the same time, carefully watches to make sure that everything he adds dissolves. Suddenly, when he has just added a total of 2 g of X, he sees that the mixture is no longer homogeneous (i.e. some of the X remains on the bottom of the beaker and won't dissolve). He divides the 2 g of X by the 100 mL of water and obtains the value 0.02 g X/mL water. This number répresents an important physical property of X. What is it uniquely called? A) the molarity of X in water at 25°C B) the concentration of X in water at 25°C C) the mass of X in water at 25°C D) the density of X in water at 25°C E) the solubility of X in water at 25°C How would you describe the solution that the chemist prepared in Question#1? A)…

I need help with those please.

a) 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 LL mark with the solution. Arrange the acids in increasing order of acidity. Rank from lowest to highest. To rank items as equivalent, overlap them. Beer,vomit,coffee,milk,battery acid,soda pop.   b)In the simulation, select the custom liquid from the dropdown list. The beaker will be filled to the 1.00 LL mark with the solution. Set the pHpH to 8.55 by entering the value in the text box provided above the pHpH scale in the panel called "pHpH." Once you adjust the pHpH, note the corresponding OH−OH− ion concentration in mol L−1mol L−1 as given in the graph on the right side of the simulation. Make sure to click the option "Concentration (mol L−1mol L−1)" under the “Water components” panel. Click on the Logarithmic scale below the graph. Find the pOHpOH of the solution.

Match each chemical or item with the proper disposal or cleanup method. Not all disposal and cleanup methods will be labeled. damp metal pieces Part B Return to correctly labeled "drying out" beaker. Answer Bank damp metal pieces Part B Place used items in the drawer. calcium chloride solutions Part A Rinse with deionized water, dry as best you can, return to volumetric flask Part A the instructor. volumetric flask Part A metal sheets Part C Return used material to the instructor. damp metal pieces Part B calcium chloride solutions Part A Pour down the sink with plenty of running water. metal sheets Part c volumetric flask Part A Pour into aqueous waste container. damp metal pieces Part B Place used items in garbage.

A solution of HCl at a certain temperature has a density of 1.189 g/mL. The concentration of the solution is © Time left: 96:06 Begin 12.39M automatic instructions Chores Additional data: Students Molar mass of HCl - 36.458 q/mol Questions Molar mass of H20 - 18.016 g/mol Ask My classes Question 2 Given or above calculate:

What should I put in the box

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

2- Lab Report 1 Post-Lab Part A How could you distinguish solution of sodium chloride (table salt) from a solution of sodium iodide (a poison) using an AgNO3 solution? Show reactions. Express your answers as balanced chemical equations. Identify all of the phases in your answer. Seperate the two equations by a comma. > View Available Hint(s) Submit Request Answer Part B Complete previous part(s) Provide Feedback

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

Short answers please

Suppose i want to manufacture concentrated bubble liquid for bubble guns. Now i want the master formula or working formula how to make this concentrated bubble liquid? What are the ingredients along with concentration ans step by step procedure how to make it? I want to make 10 ml concentrated bubble liquid for this please give a master formula? I will rate you positive if you do this. Please don't use AI for answering this question.

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

1. Solubility Test Table 1. Results for the solubility test. OBSERVATION* INFERENCE SAMPLE Ethyl acetate ** Нехаne Methanol Water Coconut oil Vitamin E Beef fat Miscible (soluble) or immiscible (insoluble) ** polar or nonpolar Sudan IV Test Table 2. Results for Sudan IV test. OBSERVATION* INFERENCE SAMPLE Нехаne Ethyl acetate Methanol Water ** Coconut oil Vitamin E Beef fat Homogeneous or heterogeneous mixture ** polar or nonpolar

doug began preparing laboratory surface disinfectant from chlorine bleach. he put on a chemical resistant apron and gloves and then removed the bleach container from the special chemical cabinet. he carefully placed the container on the laboratory benchtop and began to add the chlorine bleach to distilled water. nearby workers began complaining of burning eyes. doug was reprimanded by the supervisor. Explain why.

Check and correct the table and equations

Concentrate. Acetic acid is added to water until the pHpH value reaches 4.0. What is the total concentration of the added acetic acid?

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+…

Pls help ASAP ON ALL ASKED QUESTIONS PLS PLS

Please help

Instructions Complete the Post-lab for Lab 10 - Kinetics after completing the laboratory exercise. This post-lab is due before the beginning of the next lab meeting. Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed later. Your answers are saved automatically. * Question Completion Status: Save and Submit L A Click Submit to complete this assessment. Question 10 Question 10 of 10 1 points Save Answer The lodine Clock Reaction where the solution turns blue-black at the end was the experiment performed three times in this lab to investigate the effect of concentration on rate of reaction. The experiment was then repeated for a fourth trial. The concentration of the H2O2 was decreased to 0.375 % and the concentration of Solution A kept the same as the three trials used in this lab experiment. The time of Trial 4 was 74.93 seconds from the moment the two solutions were mixed until the solution turned blue-black. Keeping in…

In the simulation, open the Custom mode. The beaker will be filled to the 0.50 L mark with a neutral solution. Set the pH to 4.10 by using the green arrows adjacent to the pH value indicated on the probe in the solution. Once you adjust the pH, note the corresponding OH− ion concentration in M as given in the graphic on the left side of the simulation. Make sure to select the option "Concentration (mol/L )" above the graphic. Select on the Logarithmic scale below the graphic. Find the pOH of the solution

For the CO2 impact experiment station: 1)         Obtain two plastic cups, red cabbage indicator, a straw, and plastic wrap. 2)         Fill each cup approximately one-quarter to one-third full of tap water and add ~10 mL of the red cabbage indicator. 3)         Place the two cups side by side on a sheet of white paper. 4)         Place the straw into one of the beakers and cover that beaker with the plastic wrap. 5)         Carefully blow bubbles into the test cup for 3 min. and observe both cups.  6)         Compare the color to the control cup and record any differences. This the Question:  Did the beaker with the solution into which CO2 was bubbled change pH/color?  By how much?  Is this what, you would predict, based on your knowledge of the chemistry of CO2?

Can you please tell me what's the classify reaction for NaOH(aq)+HCI(aq). I've attached two images here. The one is for the record data and the other one is the test tube where we have to look for the reaction and then record data in our lab.

Help please, the data is in the second picture.

||| O CHEMICAL REACTIONS Predicting the products of a neutralization reaction Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HCIO3 + Ca(OH)₂ 45°F Mostly cloudy Explanation 0 Check Q Search ローロ X $ W 0/5 Ⓒ2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibility Jessica plo 40 Ar ? 8: 0 8:19 PM 4/26/2023