PS3

1) Listen -5 The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10 and a professor made 1825 mL of a CaSO4(ag) solution but then one of his graduate student accidentally poured in a 0.125 M solution of calcium phosphate [Cag(PO4)2] solution. You may ignore the additional volume coming from the Ca3(PO4)2 solution to make the calculation simpler. Calculate the new sulfate (SO42) ion concentration at equilibrium with this common ion effect. 6.40 x 10-5 5.25 x 10-5 6.21 x 10-5 5.44 x 10-5 201591..docx LAB EXP. #3 -..docx Show All

16. The combustion of gasoline (octane) in a car engine can be represented by the following equation: 2C3H18(1) + 2502(g) a. What mass of oxygen is used up to burn a full tank of 36.00 kg of gasoline? Text --> 16CO2(g) +18H20(g) b. Why might a vehicle that is calibrated to run perfectly at sea level run poorly at higher elevations? Text Тext According to the Canadian Automobile Association, the average Canadian drives 20,000 km/yr. C. Assuming that distance, how many more kg of carbon dioxide are added to the atmosphere each year by a Toyota Tacoma (fuel economy of 12.8 L/100 km) than a Toyota Prius (4.52 L/100 km)? The density of gasoline is 0.719 kg/L.

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.

An action will release carbon tetrachloride to the atmosphere resulting in an air concentration at the source of 10° g/m3. Assume an adult inhales this contaminated air from 5pm to 9am on weekdays and 24 hours/day on weekends for their entire life, that it takes 5 minutes for the source to reach his window. Determine if the lifetime risk of developing a fatal form of cancer is acceptable.

Read and interpret the following information using the following abstract from a scientific journal article. In 2-3 sentences, summarize what you understand from this research

POTASSIUM PERMANGANATE AND SODIUM HYDROXIDE Repeat procedure 3 using 6M sodium hydroxide instead of 6M sulfuric acid. Allow the solution to stand for about 15 minutes and write an observation of any changes. Observations: Balanced chemical equation: 2KMnO 4(aq) + 3NaHSO 3(aq) + NaOH (aq) → 2H2O(l) + K2SO 4(aq) + 2MnO 2(s) + 2Na2SO 4(aq) What substance is responsible for the color change?

Activity 1-1 part 3

Pls help ASAP

Can you help me answer this type of question from my study review package please

rsity o... ingsbo... kboard... ARED4 ethod? 7... F2 Remaining Time: 1 hour, 22 minutes, 23 seconds. Question Completion Status: A Moving to the next question prevents changes to this answer. Question 1 # The angle of the water molecule (H₂O) is 180 degrees 120 degrees 100 degrees 90 degrees 109 degree A Moving to the next question prevents changes to this answer. MAR 14 80 F3 SA $ 000 F4 tv % F5 NA MacBook Air 22 F6 ∞r F7 45.113

A student wants to know how many grams of water are made from 5.00 grams of oxygen gas during the synthesis of water from basidelements. Which step should be substituted for the question marks? 2 Hz+ O2→2 H;0 5.0 g 02 1.0 moles 0, 1 31.998 g 02 18 g H,0 A. 1.0 mole 0, 2.0 mole H,0 B. 1.0 mole 0, 18 g H,0 C. 2.0 mole H,O 2.0 mole 0 D. 2.0 mole H, O

Post-Laboratory Questions 1) An extra strength antacid tablet contains 750 mg of active ingredient, CaCC 22.25 mL of HC1 (aq) to neutralize the tablet, how strong is the acid? 2 HC1 (aq) + CaCO3 (aq) → CaCl,(aq) + HOH (1) + CO2 (

this is my homework practice assignment that is very important and I really need help please give the answer for the 2 questions which I have highlighted with the green color I need a step by step explanation please please please help me.

y.Com/myct/itemView?assignmentProblemID=163857095 - Lab Report Post-Lab v Part A Sodium benzoate is a food preservative. What is its chemical formula ? (Consult a handbook or the Internet.) Source: Handbook of Chemistry and Physics. ΑΣφ ? NA chemical reaction does not occur for this question. Submit Request Answer Part B What is its approximate range of solubility in water? (Consult a handbook or the Internet.) Source: Handbook of Chemistry and Physics between 70 - 80 g per 100 mL, at 20 °C O between 50 60 g per 100 mL, at 20 °C between 40 - 50 g per 100 mL, at 20 °C O between 60 - 70 g per 100 mL, at 20 °C Previous Answers

Each step should be a balanced chemical equation.

4. Photochemical smog is a type of air pollution in the troposphere of our planet produced when sunlight acts upon motor vehicle exhaust gases to form harmful substances such as ozone (O3). For example, nitrogen dioxide (NO2) reacts with atmospheric oxygen (O2) in the presence of light to produce ozone (O3) and nitrogen monoxide (NO).

A water quality monitoring found that local bayou contains 8.72x10-4 % (wt/wt) nitrate ion ( MW = 62.01 g/mol).  Yet the EPA standard for the nitrate content in a natural water body is 1.613x10-4 M or lower.  Is the mentioned bayou water in that location acceptable from the EPA standard ?   List your calculation steps (Density of bayou water is 1.0 g/mL).

Without naturally occurring greenhouse gases, Earth's average global temperature would be near 0°F (or -18°C) instead of the actual value of 59°F (15°C). How do atmospheric greenhouse gases warm Earth? Do not use the word “trapped” in your answer

7) Explain how NOx and SOx gases contribute to acid rain. 8) Explain how CFCS contribute to the destruction of the ozone layer.

The maximum dose over 24 hours for OTC (over the counter use) of acetaminophen (medication in Tyleonol) is 4,000 mg.  Many OTC and prescription medications contain acetaminophen along with other ingredients.  Acetaminophen can be found in many cold medicines and in prescription painkillers such as Norco, which also contains the addictive opiod hydrocodone.  Keeping track of sources and amount of acetaminophen is very important for your health.  Abuse of Norco due to the opiod can also lead to toxic/lethal doses of acetaminophen. There are now strict regulations on the number of tablets of Norco that can be prescribed (7 day maximum per prescription, not refillable without another prescription).     A tablet of Norco contains 325 mg of acetaminophen.  Thirty tablets are in a week-long prescription post major-surgery to aid in recovery.  How many grams of acetaminophen are in the 30 tablets?