When vinegar is added to baking soda first, the reaction is more strong. Later, at the finish, the reaction is much less fervent. Why?

Q: Thinking about the activity today, why do we say that heated gasses are expanding, while cooling…

A: When a gas is heated, its temperature increases, causing the gas molecules to move faster and have…

Q: The percentage of earth ozone in the stratosphere is nearly Select one a. 70 b. 20 c. 90 d. 50 CFCS…

A: Since you have posted multiple questions, we are entitled to answer the first 3 only.

Q: What happens between liquid water and water vapor when you have an increase in energy in the system?…

A: we have choose correct option

Q: Why does the fusion of heavier atoms require higher temperatures than the fusion of hydrogen?   a.…

A: Introduction :  Fusion of heavier atom require high temperature .

Q: Give the polutants that are primarily responsibie for tropospheric czone increases and stratospheric…

A: The statement can be completed as:-  1. Tropospheric ozone comes primarily from NO , which is…

Q: Chapter 7 REVIEW Vocabulary Review On a sheet of paper, write the word or phrase from the Word Bank…

A: Since you are posted with multiple questions. As, per the rule, I am answering the first question…

Q: Heating food in the microwave oven is mainly due to the vibration of the molecules of a. fats B.…

A: Given: Heating food in the microwave oven is mainly due to the vibration of the molecules.

Q: 21. A mountain is 4500 M high. Assuming Paust- 2700 kg/m' and pmante - 3300 kg/m what is the depth…

A:

Q: Briefly describem, how DSC machine works?

A: Differential Scanning Calorimetry (DSC) is a device that is used to measure the amount of heat…

Q: analyzing the process: How do you handle the demands on your time...like studying, socializing,…

A: Answer :--Here, we have to effectively handle the demands on your time, such as the studying,…

Q: QUESTION 26 At 760 mmHg pressure and a temperature of 250 K,the density of a gas ... (standard…

A: At STP= 22.4 Litre of Volume

Q: Imagine a system composed of two different types of molecules, one relatively light and one…

A: In thermodynamics, the velocity of a molecule is related to its kinetic energy, which is determined…

Q: In a given air mass, the temperature was found to decrease linearly from a temperature of 304.2 K at…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: hat should be the best type of fire extinguisher in the following section of the laboratory an port…

A: As per the guideline, since you have posted a question with multiple sub-parts, we have solved the…

Q: MULTIPLE CHOICE Question 18 Which scenario best describes the long-term health effect of air…

A: Here, we have to find the best scenario that describes the long-term health effect of air pollution…

Q: Propose a chemical structure for the name below. Make sure to clearly define the stereochemistry…

A: Given that, the name of the compound is:4-ethyl-2,4-dimethylcyclohexa-2,5-diene-1-one

Q: EN is infusing continuously at 50 ml/hr. A medication is started that requires the EN to be held 1…

A: EN is infusing continuously at 50 ml/hr.

Q: Draw a structural formula for the major organic product(s) of the reaction shown below. 1. CH31…

A: Since there are multiple questions, we will answer only one, that is, the first one. If you require…

Q: Does the caterpillar do work in climbing the tree? Explain.

A: Potential energy E = mass x g x height

Q: Station 3: Hydrogen Peroxide (H202) and Yeast 1. Clean your small graduated cylinder by rinsing with…

A: Yeast is used in Bakery and fermentation  process and  called Baker Yeast.

Q: 22. A solution of sodium sulfide reacts with 200. mL of 3.75 M HCl to form a solution of sodium…

A: Given, Concentration of HCl solution = 3.75 M = 3.75 mol/L Volume of HCl solution = 200. mL = 0.2 L…

Q: Refers to the process of breaking down of rock and minerals when exposed to atmosphere, water, acids…

A: We have to tell the name of the process of breaking down of rock and minerals when exposed to the…

Q: Preparation of Volatile Binary Acids (Gases) 15) NaCl observation on litmus.... 16) Equation....

A: Litmus paper is used to test whether the solution is acidic or basic. Acid solution turns blue…

Q: The temperature starts decreasing in this layer of the atmosphere as the altitude increases reaching…

A: Troposphere is the lowest region of the atmosphere its boundary is fallen in the range of 10-18 km…

Q: X 1. DME, heat 2. LIAIH4, THF 3. dilute HCI, H₂O O 4. Cl3C H₂SO4 (cat.)

A: First step involves the diene and dienophile. so they take part in Diels Alder reaction. Second and…

Q: Gas pressure is caused by what molecular level activity? A. particles colliding with each other B.…

A: Given that Gas create pressure. We need to find the reason behind it at molecular level.

Q: Find a substitute household product that are more safer that can't cause indoor air pollution of…

A: *Substitute of air freshener is Fragrant House Plants.  Natural Candles. *substitute of candles is…

Q: 1. c Which equation is an invalid representation of the combined gas law? Assume that T1 and T2 are…

A: 1.c The gas laws are as follows : 1. boyle law 2. Charles law 3. Gay-Lussac Law.

Q: Why we need artificial methods for oil and gas production, illustrate different artificial methods…

A: Answer: We need artificial  methods for oil and gas production for the better production of oil and…

Q: 5. Why must you dissolve the metal samples in the fume hood? (Select the best answer.) a. The metal…

A: The question is based on experimental chemistry.We need to explain the reaction between metal and…

Q: 8. Why is it important to review the entire procedure for the upcoming experiment before coming to…

A: The procedures and manners of conduct followed in a chemical laboratory are called lab etiquettes.…

Q: 6. When humans plant more trees, carbon can begin entering the  _______________ as carbon dioxide.…

A: When humans plant more trees, carbon can begin entering the  __ as carbon dioxide

Q: The rural folks found that their flowing water source was flammable upon igniting, yet there were…

A: Given options: a. methane b. phosphorus c. potassium d. sodium

Q: The outermost layer of the atmosphere which is the last layer between the earth's atmosphere and the…

A: The atmosphere have following layers from earth surface to outer space 1 Troposphere 2 Stratosphere…

Q: 9. Indicate the products are formed when the following compounds react with ozone. a. b. C. d.

A: -> Ozonolysis of alkene produces carbonyl compounds.

Q: 3. What is the essential gas needed by the human body from the external environ A. carbon dioxide B.…

A: A human body needs vital elements for their different processes occuring in body. There are trace…

Q: A gas cylinder of volume 5.00 L contains 1.02 g of Ar and 0.0510 g of Ne. The temperature is 293 K.…

A: Given: The volume of the container, (V) = 5 L. The mass of Ar, (mAr) =  1.02 g. The mass of Ar,…

Q: 5. The mass of ammonia, NHs, in a 1 m' ammonia scrubber is 120 g at 30°C and 1.06 atm. What is the…

A: Given data: Volume of NH3 = 1 m3 Mass of NH3 = 120 g Pressure = 1.06 atm  Temperature = 30o C…

Q: Just answer question 15 show the step correct by step to step .

A: We konw that,      1 hour=60 minutes      1 hour=3600 seconds      1 minute=60 seconds So,     1…

Q: Question What percentage of X (t,, = 93.2 h) would remain after 42.2 hours. Use the formula with…

A: t1/2 means the time at which the half of the  Concentration of X reacted.  So, At t = 93.2 hr, the %…

Q: The average time for oxygen molecules to diffuse 0.5 mm is 20 seconds. How long would it take for…

A:

Q: 35 Just do the Dot diagram and shape for these not everything the book asks, show work

A: Hybridization is a hypothetical concept which tells the geometry and shape of the molecule. The…

Q: What is the ppm concentration of 370g of HCN gas inside 123,490g of air? A. 3000 ppm B. 1500 ppm…

A:

Q: Why plasma is rare on earth? Not less than 10 sentences.

A: Matter can be defined as any substance that have fixed volume and shape. Mainly there are three…

Q: Please choose the letter of the correct answer. I will rate your answer   3. Extra energy is…

A: The biological significance of organic compounds, its structure, reactivity, and interactions are…