diffusion lab

What volume (in mL) of 0.0887 M MgF2 solution is needed to make 275.0 mL of 0.0224 M MgF2 solution? McVc=MdVd A.10.9 mL B.91.8 mL C.14.4 mL D.72.3 mL E.69.4 mL

Activity 1.1 Description of Intermolecular Forces Match Column A with column B. Choose the letters of the correct answer and write it on your answer sheet. Column A Column B 1. Attractive forces between polar molecule 2. Electrostatic attraction between an ion a. hydration b. ion-induced dipole and a polar molecule 3. Favorable interaction between the ions of an ionic compound and water 4. Distortion of the electron distribution of an atom or molecule brought about by an ion or a polar molecule 5. Dispersion of charges when an ion approaches a molecule 6. Happens when a H-atom bonded to electronegative atoms, such as O, N, F approaches a nearby electronegative atom 7. Dispersion of charges when a dipole approaches a nonpolar molecule 8. The ease with which electron distribution j. dispersion forces is distorted 9. Substance with positive and negative ends 10. Positively-charged ions c. H-bonding d. polarizability e. dipole-dipole f. dipole-induced dipole g. ion-dipole h. dipole i.…

Questions 2,3 and 4

1. Calculate the normality of potassium permanganate (MW: 158.034 g/mol) if 0.2142 g of sodium oxalate (MW 134g/mol) consumed 29.0 mL of potassium permanganate. A 0.1102 N B. 0.1059 N C. 0.1054 N D. 0.1025 N E. None of the choices 2. A liter of 0.1 N potassium permanganate contains KMnO4: A 2.63 g B. 3.16 g C. 7.90 g D 15.80 g E. None of the choices 3. How many milliliters of 0.1 N sodium hydroxide will be needed to neutralize a 25.00-mL solution that contains 6.45 g of oxalic acid per liter? (MW H2C2O4 = 90.0349 g/mol; NaOH = 39.9971 g/mol) A. 17.9 ml B. 30 6 mL C. 24.5 mL D. 35.8 mL E. None of the choices

17.100 ml of 5:3:2 ethylene: chloroform: isoamyl alcohol 18. Convert 50 ppm to g/L 19. Convert 50 ppm to mg/L 20. Convert 5 ppb to ul/l

101 Chem101 b Search results for 'What is the mc X B Brainly.com - For students. By stu x G What is the molecularity of step + -> A app.101edu.co I Apps b bartleby B Brainly.com - For st. = Google Docs M gmail 6 eagle adv O school email m Monthly | My Classes 101 Chem101 E Reading list email S canvas general Question 37 of 44 Submit What is the molecularity of step 1 in the proposed mechanism? A) unimolecular Step 1 CI + O3 → CIO + O2 B) bimolecular C) termolecular Step 2 CIO + O3 → CI + 202 D) Cannot be determined from given mechanism 4:50 PM P Type here to search 82°F AQI 51 7/21/2021 近

A patient received 2.00 g of NaCl in 8.00 hours. How many milliliters (mL) of a 0.900 % (m/v) NaCl (saline) solution were delivered? A. 0.222 L B. 222 mL C. 45.0 mL D. 220 mL

he solubility of oxygen in water is about 4.5 x 10-2 g/L. The water portion of an adult's total blood supply is about 5 liters. How many grams of oxygen could dissolve in 5 liters of water?   A. 4.5 x 10-2 g/L   B. 0.23 g/L   C. 9.0 x 10-3 g/L   D. 110 g/L

Water pollution is defined only as any physical or chemical change in water that: 1 a. Improves the flow rate of ground water b. Adds good properties to drinking water c. Improves the health of humans and other organisms. d. Adversely affects the health of humans and other living organisms. 03 + NOx + HCs ===> 2 a. VOC b. Smog c. CFCS d. CO2 Which one of the following is not true: 3. a. Sediments destroy organisms life in water. b. Sediments cover aquatic animals and plants. c. Sediments remove insoluble toxins from lakes. d. Sediments decrease light penetration. light at about 120-210 nm + O2 produces: a. 20 b. CIO C. 03 d. H20 One serious environmental problem is: a. Eutrophication b. Increase in DO c. Disinfection d. Decrease in BOD Gasoline motor vehicles are the major source of: 6 a. 03 on earth b. NOx on earth c. CFC's d. NH3 on earth

answer

5. Which tablet size and the liquid combination resulted in the fastest dissolution times? A. crushed, room temperature water B. crushed, hot water C. crushed, room temperature vinegar D. broken, hot water E. broken, room temperature vinegar 6. What is the relationship between particle size and the time it takes for the tablet to dissolve? A. direct proportion B. inverse proportion C. combined proportion D. joint proportion 7. Using the activity as a model, how does mechanical weathering (breaking or crushing) contribute to chemical weathering (dissolution)? A. Increases size of particles B. Decreases dissolution time C. Increases surface area D. Both A and B E. Both B and C

What is the answer of this?

Directions Through the given situations below, answer the following questions 1 A mixture of monosodium glutamate, white sugar, salt and benzoic acid is to be melted by a group of Grade 7 students to determine the behavior of the mother during melting Predict how the mixture will look like as it is being heated. Explain your answer SUBSTANCE Sali White sugar Monosodium glutamate Benzoic acid MELTING POINT 801 C 186 C 232 C 122 C 2. Theo wants to observe what will happen to substance X (melting point is at 78 C) after heating it on an evaporating dish. After heating for a few minutes, substance X starts

A saline solution used intravenously has a concentration of 0.900% m/v NaCl. How many grams of NaCl are given in 1.75 L of this solution?   Group of answer choices a. 1580 g of NaCl b. 0.514 g of NaCl c. 0.0158 g of NaCl d. 15.8 g of NaCl

Design/demonstrate an experiment from the mixtures given in every item. Record your work then pass here (google classroom) 1. How do you separate a mixture of a. salt and sand? b. Cornstarch in water ? C. Ground mongo seed in water d. Ground pepper and sand

The blood of a reckless driver contains 0.10% alcohol. The concentration of alcohol is equivalent to _____ ppm.Express answer in 2 decimal places.

4) A heart failure patient shows digoxin toxicity. She received 125 mcg as standard dose. Serum levels were reported to be 2 ng/mL (2 mcg/L). Target therapeutic level is 0.8 ng/mL. What dose should she receive? A. 25 mcg. B. 50 mcg. C. 75 mcg. D 100 mcg. E. 125 mcg. THE ANSC

Examen 1. Convierta 15.5 kg a mg. Recuerde que k = 1 x 10^3; y m = 1 x 10^-3. Select one: O a. 155 mg O b. 15,500 mg O c. 15.5 mg O d. 1.55 mg

18/8 stainless steel is made up of 18% (m/m) of chromium and 8% of (m/m) nickel in iron. What mass of iron would be in 235.4 g of stainless steel. 1.18.8g 2. 42.4 g 3. 61.2 g 4. 174.2 g  5. 235.4 g

TRUE OR FALSE 10. All matter has a greater density than zero.  11. Molar concentrations are not temperature-dependent. 12. A substance heavier than water has lower specific gravity

STARTING AMOUNT X Hemoglobin is an oxygen-carrying protein found in blood. The average concentration of hemoglobin in blood is 15.0 g hemoglobin/dL blood in men and is 8.5 g hemoglobin/dL blood in women. If a woman loses 11.0 mL of blood, how many grams of hemoglobin did the woman lose? 165 1 ADD FACTOR ) 10 100 0.001 0.1 1000 1.65 0.01 8.5 10⁰ ANSWER 0.935 15.0 10* 11.0 RESET 2 0.77 16.5 9.35 93.5 I blood ml blood blood a hemoglobin/dl blood ml blood dl blood a bemoglobin

3. Water has the properties of Adhesion and Cohesion. A. How many hydrogen bonds can a single water molecule have? B. What is the difference between Adhesion and Cohesion? C. Explain why more water drops could fit on a one-peso coin when compared to rubbing alcohol.

What is the molarity of the caffeine solution B2 Molecular Weight of Caffeine 1942 g/mol. Oc O d. A Select one O a. 5x10 M Ob 5x 10¹² M 1x104 M 25 x 103 M e. 2.5 x 10² M Take 20 ml 1 L of 5 x 10 M 100 ml B

What was the concentration of carbon dioxide in 1960?

When blue food coloring is dissolved in water, the result is a ________? a. homogeneous mixture called a solution b. homogeneous mixture called a suspension c. heterogeneous mixture called a suspension d. heterogeneous mixture called a solution

To make 5.00 L of a fruit punch that contains 10.0% v/v ethanol, how much 95.0% v/v ethanol must bemixed with how much fruit juice?a. 1.90 Lb. 48.0 mLc. 526 mLd. 190 mL

Answer TRUE or FALSE and explain the reason of your choice in a maximum of five sentences. (10 pts. Each) 1. The excessive consumption of alcohol carries health risk. 2. Eating a meal before drinking alcohol stops a person from getting drunk.

What is the concentration of the AR stock solution in ppm? Using the molar mass of AR (496.42 g/mol), and that 1 ppm = 1 mg/L, convert this ppm concentration to μM. Assume the density of the solution is 1.000 g/mL. Concentration of AR Stock Solution (ppm) Concentration of AR Stock Solution (μM) 21.22 Unrounded 3 Rounded 3

I need help with 11 and 12 (Not honor class) (Not grading)

A chemistry student needs 45.0 g of 4-methyl-2-pentanone for an experiment. He has available 0.20 kg of a 34.8% W/w solution of 4-methyl-2-pentanone in ethanol. Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button. Be sure your answer has the correct number of significant digits. No solution