Conservation+of+Mass+Lab+Worksheet

Remaining Time: 41 minutes, 51 seconds. * Question Completion Status: A Moving to another question will save this response. Question 19 What concentration of 29.03 mL of H2SO4 can be prepared from 13.53 mL of 0.45 M H2SO4? 8.5 M 0.21 M 0.34 M 9.6 M A Moving to another question will save this response.

Part C A solid mixture consists of 32.3 g of KNO3 (potassium nitrate) and 5.7 g of K2SO4 (potassium sulfate). The mixture is added to 130. g of water. If the solution described in the introduction is cooled to 0 °C what mass of K2SO4 will crystallize? Use this solubility curve (Figure 1) to answer the questions. Enter your answer numerically in grams. • View Available Hint(s) Nνα ΑΣφ ? Figure Submit

What is the volume of 1.80 M NaCl solution that can be prepared by the dilution of a 50.0 mL of brine solution containing 32.0 wt% NaCl? (Assume the density of a brine solution is 1.10 g/mL and formula mass of NaCl=58.4 g/mol) a. 6.03 mL b. 167 mL C. 301 mL d. 438 mL

Here is a graph of the molarity of acetonitrile (CH3CN) in a reaction vessel during a certain chemical reaction. Use this graph to answer the questions in the table below. 0.030- 0.025- 0.0215 0.020- y M 0.015. 0.010- 0.005 0 5 10 15 20 25 30 seconds Is CH3CN being created or destroyed by the chemical reaction? If CH3CN is being created or destroyed, what is the rate at which it is being created or destroyed 8 seconds after the reaction starts? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. If CH3CN is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 8 seconds of the reaction? Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. X O created O destroyed neither created nor destroyed ☐ ☐ 1 ×10 □·□ olo 0 [

Use your equation, and the data from Part II of the experiment to find the standardized molarity of the NaOH solution for each of the three trials. Also, find an average standardized molarity for the NaOH solution.

Chemical Reaction Experiments: Coke and Mentos 1. The first bottle has 100 ml of coke and 1 piece of mentos. 2. The second bottle has 100 ml of coke and 3 pieces of mentos. 3. The third bottle has 100 ml of coke and 10 pieces of mentos. Give your observations and why chemical reactions occurred.

If you dissolve 20.000 g of KSCN(s) in a 250.00 mL volumetric flask, and fill the flask exactly to the mark, what is the concentration of KSCN you have prepared? a. 8.2321 x 103M b. 0.82321 M C. 0.80000 m d. 0.82321 m e. 0.08000 M

I need help calculating the following values.  EXPERIMENTAL DATA Recall the data table provided in your lab manual, shown below. Sample HIn (mL) 1.10 M Acetic Acid (mL) 0.90 M Sodium Acetate (mL) 1 10.00 8.00 2.00 2 10.00 7.00 3.00 3 10.00 6.00 4.00 4 10.00 5.00 5.00 5 10.00 4.00 6.00 6 10.00 3.00 7.00 7 10.00 2.00 8.00 8 10.00 1.00 9.00 9 10.00 10.00 mL NaOH (0.10 M) 10 10.00 10.00 mL HCl (0.10 M)

Question 49 In 1-2 sentences, explain what the Arrhenius equation tells us. Use the diagram to help describe what you mean. 100 °C - room temperature (300 °K) k, = Ae¯FalRT (373 °K) 4 kJ/mol (1 kcal/mol) 40 kJ/mol (10 kcal/mol) 80 kJ/mol (19 kcal/mol) → energy (E) Edit Format Table 12pt v Paragraph v BI Ų Av ev T? v * s fraction of molecules having energy E

36 shift command option ASTRO CAT Unknown Solid Identification Prelab Questions Section CHM lol-217 Anniston Stovall Name 1. Sodium ion (Na") and calcium ion (Ca2) produce nearly the same color in a flame test (yellow and yellow-orange, respectively). Describe a way to differentiate between the two using a solution of Na,CO, and write the correct balanced equation(s). (Hint: recall the solubility rules for Na* ion.)

What volume of a 2.00 M KCl solution is required to prepare 50.0 mL of a 0.150 M KCl solution? a. 1.00 x 104 mL b. 2.00mL c. 3.75 mL d. 25.0 mL e. 5.00 x 102 mL

can you please answer the question in the format that it is asking for under the questions with the provided answers? thank you

Bottled orange juice drinks have a sucrose concentration of 23.5 g/ 100 ml what mass of sucrose is present in a 750 ml bottle of orange juice  a. 1.76 g B. 3.13 g c. 176 g d. 313 g

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In Lab 1, you practiced relating moles and concentration. You will use these skills again in Lab 2. In this week's lab, you will prepare a series of flasks (A-F), each containing different amounts of hydrochloric acid, HCI (aq). Table 1 of the Lab 2 worksheet asks you to calculate the number of moles and concentration HCI in each flask before arriving at the lab. The table lists the volume of water and the volume of 0.60 M HCI (aq) added to each flask. Let's check one of your calculations together. In Flask B, there will be moles of HCI present (answer with 3 decimal places. Do not use scientific notation.) The solution concentration will be M (or mol/L). (answer with two decimal places. do not use scientific notation). NOTE: Once you have feedback from this quiz that you have the right strategy for one flask, complete question P3 of the pre-lab preparation tasks (Lab 2, Page 10). In other words, fill-in your correct values from this question along with calculated values for the other…

Please help ASAP, thank you! "Calculate the mass of diethyl ether (in grams) given the values listed in the reaction scheme. Keep your answer to 2 decimal places."

Use the solubility graph to answer the following question. If 45 g of potassium nitrate is placed in 100 ml of water at 40 °C, how much salt would have to be added or removed in order to saturate the solution? Solubility Curves Solubility (g/L of solvent) 10 g 158 25 B 30 g 20 g 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 KI -HCI SO₂ NaNO₂ -KNO3 NHẠC KCI -KCIO3 NaCl NH₂ 100 0 0 10 20 30 40 50 60 70 80 90 100 Temperature (°C)

3. Making a cheese sandwich can be represented by the chemical equation: 2 Bd + Ch → Bd2Ch What does the "2" on the left side of the chemical equation represent? A. 2 pieces of bread stuck together B. 2 separate pieces of bread C. 2 loaves of bread k to add notes nts 12 55%

Use the table and graph below to answer Questions 2–6. 2. What must be a constant during the experiment?A. temperatureB. mass of C O 2 dissolved in each sampleC. amount of beverage in each sampleD. independent variable 3. Assuming that all of the experimental data are correct,what is a reasonable conclusion for this experiment?A. Greater amounts of C O 2 dissolve in a liquid atlower temperatures.B. The different samples of beverage contained thesame amount of C O 2 at each temperature.C. The relationship between temperature andsolubility seen with solids is the same as theone seen with C O 2 .D. C O 2 dissolves better at higher temperatures.4. The scientific method used by this student showedthatA. the hypothesis is supported by the experimentaldata.B. the observation accurately describes what occursin nature.C. the experiment is poorly planned.D. the hypothesis should be thrown out.5. The independent variable in this experiment isA. the number of samples tested.B. the mass of C O 2…

A pair of students were mixing aqueous chemical solutions in a the Classes of Chemical Reactions lab experiment. They labeled their test tubes A, B and C. Which of the test tubes showed a reaction? A B All three test tubes reacted. Test tube B reacted. Test tube C reacted. Test tubes A and B reacted. Test tube A reacted

Octane burns according to the following equation:2C8H18+25O2→16CO2+18H2OCalculate the grams of CO2CO2 produced when 7.68 g of C8H18 are burned. A. 26.0 B. 21.3 C. 22.5 D. 23.7 E. 24.8

12. Name each chemical and complete the reaction ↑ Add file + H₂O