Some deposits were observed in water preserved in aluminum containers after two to three days. What could the deposit be ? What is the reason for the formation of these deposits

Q: Compare the rates of change at the different points of the pH scale. a) Does adding two to a pH at…

A: pH is the measure of determination of acidity of a system on the basis of the presence of…

Q: Answers to all activities will be written on the answer sheet provided. Activity 1 You will need…

A: Mixing of colors is not a chemical process but a physical process and when the paints of two…

Q: Read these sentences from the text. "In the years right after the invasion, phytoplankton fell by 80…

A: The amount of phyto plankton and zoo plankton declined some percentage. The word decline indicates…

Q: A group of students enrolled in a Physical Chemistry Laboratory class performed an experiment on the…

A: Given: Original concentration of acetic acid (N) = 1.3402 N Original concentration of NaOH = 0.1482…

Q: Which of these is a good alternative name for photochemical smog? Group of answer choices London…

A: Given,  Which of these is a good alternative name for photochemical smog? Group of answer choices…

Q: I Review | Constants Periodic Table Part C Consider the following two expressions, the only…

A:

Q: how does 31.6 * 0.57 = 18.1? when doing the math im getting 18.012. is there a step im forgetting?…

A: 48.7 g of dichloromethane has 31.6 KJ/mol enthalpy of vaporization ∆H°vap .We have to calculate…

Q: Based on the information I was able to solve and provide, may I get help on #25 (Compare the actual…

A: We will use the adjusted temperature based on the thermometer calibration as the actual freezing…

Q: 3. Match the activity given in Column I with the type of pollution created by it given in Column II.…

A: Any undesirable change in the composition of environmental components is termed as pollution.…

Q: The ozone concentration at a monitoring site is measured as 0,11 ppm, at 25 °C and 1 atm. What is…

A: ppm: parts per million: Very dilute concentrations of substances can be expressed in ppm unit. One…

Q: Research project about CANDU Reactor/ Natural Source of Uranium. In a paragraph and sentence.

A: Nuclear reactor is a device used to generate and control a nuclear fission or fusion reaction. They…

Q: 17NEW June 20 2019. Analysis of several plant food preparations for the content of organics yielded…

A: Given,  True value = 18.50%  Experimental values are = 16.40, 16.36, 16.26 and 16.34%  Options are :…

Q: Discuss three characteristics of a named pandemic.

A: A pandemic is a disease whose presence has been reported in a significant geographical area…

Q: A certain amount of insecticide is washed out into the lake on June 1 , leading into concentration…

A: After getting subjected to the lake, the pesticide will start to decompose following the first-order…

Q: Material: Block Mass: Соpper 5.0 g 10.0 g Heating Duration: 4s Tjnitial 20.0 °C I final 123.9 °C…

A: Relationship between heat capacity and heat absorbed by substance given by equation: Q = m.s.∆T…

Q: A 4 x 10^-6 % solution if sodium-24 chloride is prepared at 9:00 am on Tuesday. What is the percent…

A:

Q: Carbon monoxide levels and the presence of soot can beused to determine whether the individual…

A: Carbon monoxide is an odorless and dangerous flammable gas whose density is slightly less than the…

Q: You are in lab doing an experiment, so far this is your data: Pb(CH3COO)2 (aq) + H2S (aq) → PbS (s)…

A: In a chemical reaction; the substance which involves in conversion is said to be reactant whereas…

Q: riew) W21 Remaining Time: 1832:56:58 at for grading, click on the Submit Assignment button. To view…

A: One urea molecule has one O atom . Hence one mole of compound contain 6.023e23 no of O atom .

Q: Name the three key stages of the physicochemical changes produced in liquid water due to radiation.…

A: The changes produced in the liquid water due to the process of radiation is known as water…

Q: Calculate the concentration of N2O5 in the vessel 9.90 seconds later. Round to two dig figs.

A: Given,Rate constant k = 0.0895/sec[N2O5]t = 1.33Mt = 9.90sec

Q: Consider the reactions that lead to photochemical smog. Describe how photochemical smog is produced…

A: Photochemical smog is a mixture of polutants which are formed when nitrogen oxide and volatile…

Q: 5. Cadmium (Cd) is a heavy metal which has a leaching rate of about 0.0012 mg/L per year. Consider a…

A:

Q: Combustion of a 1.450 g sample of glucose yielded 23.01 KJ of heat. The calorimeter contained 1.900…

A: The final temperature will be 24.18°C.

Q: If you have both 1-hour and 8-hour data for ozone, report the higher AQI value. Suppose you had a…

A: I have attached the detailed solution for the question below.

Q: 1.In testing a tablet, what are the meaning of these terms Disintegration Basket-rack assembly -…

A: We have to tell the definition of :-  Disintegration Basket-rack assembly  Disintegration time…

Q: Explain why the effects of a large volcanic eruption can last several years.

A: Major eruptions alter the Earth's radiative balance because volcanic aerosol clouds absorb…

Q: 21. Water goes through a chemical change when it evaporates into a gas.   Group of answer choices…

A: Types of changes in nature: Chemical change: During this type of change the chemical nature,…

Q: Two trials were completed in a kinetics experiment, resulting in the data collected below. Calculate…

A: The experimental values for two trials of a kinetic results are given as follows.  Trial Acetone,…

Q: Put approx. 10 mL of vinegar (HC2H3O2) in a short glass bottle and add 1 piece of rust-free small…

A:

Q: Evaluate the following related statements and choose the correct answer from  the choices given:…

A: Decomposition is a biological process that includes the physical break down and biological…

Q: Next, 4.860 of ethanol (C,H, OH) are put into the "bomb" and similarly completely burned in an…

A:

Q: The activity of penicillin is proportional to its concentration. This antibiotic decomposes slowly…

A: The integrated rate-law expressions for zeroth order, first order, and second-order can be arranged…

Q: Design A Lab - Baking Soda vs Baking Powder Introduction Due to the widespread use of sodium…

A: As per the guidelines, I am allowed veto answer one question at a time. I still have answered more…

Q: 5. Lead (Pb) is a heavy metal which has a leaching rate of about 0.0078 mg/L per year. Consider a…

A:

Q: QUESTION 15 Why is hydrgogen gas added to the reactor coolant? Why is lithium hydroxide added to the…

A: Coolant -it is a  substance circulated through a nuclear reactor to remove or transfer heat.

Q: How does the 1966 Fahrenheit 451 move portrayed censorship? Provide details and examples

A: Adaptation of the Ray Bradbury novel about future society that banned all books. Fahrenheit 451…

Q: What chemical species in the atmosphere acts like nature’s cleaning agent? Give the symbol and name.

A: the hydroxyl radical which is extremely reactive and able to oxidise most of the chemicals found in…

Q: The quantity Q(t) of a drug in the bloodstream, in mg, at hour t, decays exponentially, as given in…

A: Part (a): From graph we can clearly sea that it is first order reaction. Also, between time t=2hr to…

Q: Compare

A: The formation of Acid rain occurs due to two chemicals mainly sulfur dioxide and nitrogen oxides.…

Q: Activity 3 Evidences of Chemical Change Objective: Identify signs that chemical changes are taking…

A: If you are posted with multiple sub-parts. As per the rule, I am answering the first three sub-parts…

Q: 14. In order for a gas to be a "greenhouse gas" it must A. transmit visible light and absorb…

A: Some gaseous molecules has a very unique property to absorb such infrared light which are returning…

Q: Hein Paired Exercise 14.36 Use the equation below to calculate the following: 2 N2OH(aq) + H2SO4(aq)…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: What is exponential function R that describes the amount left after t days? If there are 300g of the…

A: Given that Radioactive element decreases 12% of its amount every 5 days. Amount of substance at…

Q: The recommended starting dosage used for treating congestive heart failure for most patients is…

A: Given: initial dosage Do =0.25 mg final dosage D = 0.0625 mg rate of elimination r = 1.79% or 0.0179…

Q: Cd is a heavy metal that leaches at a rate of approximately 0.0012 milligram/liter per year.…

A: This question is better solved by using dimensional analysis concept. It is given that  rate of…

Q: 3. Lightsticks contain a substance that breaks down during a chemical reaction. A release of energy…

A: During a chemical reaction, when energy is released in any form be it light or heat,then the…

Q: Help Save & Exit Submit 14.6 g 58.4 g 13.0 g 6.52 g 2:45 PM 11-Mar-22 asus COLLECTION prt sc delete…

A: Limiting reagent is the reagent that get completely consumed in the reaction and decide the amount…

Q: A chemical is sprayed onto a lawn at a rate of 0.90 kg active ingredient per hectare. The chemical…

A: The chemical is sprayed onto the lawn at a rate of 0.90Kg active ingredient per…

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.