Write at least 5 chemical changes that you observe in your household and community.

Q: Justin is making a snack. He toasts a piece of bread and spreads peanut butter and jelly on it. Then…

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Q: Mango lemonade tea consists of several substances that are NOT chemically combined, so Mango…

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Q: Bread is a good source of carbohydrates. Bakers use yeast to leaven the bread. Explain why the bread…

A: When yeast is added it begins to feed on sugars in flour and releases the carbon dioxide that makes…

Q: Assume that 10 Peanuts is 1 Salt and 1 Cashew is 28 Almond. Convert 6.9 Peanut/Almond into…

A: Solution: As given that 10 Peanuts = 1 Salt 1 Cashew = 28 Almonds

Q: Boston pizza franchises must pay royalties on all sales, and they must commit to renovating their…

A: Given: Boston pizza franchises must pay royalties on all sales, and they must commit to renovating…

Q: Which is not an advantage of "Extractive distillation" over "Azeotropic distillation"?

A: In this question we have to compare Extractive Distillation with Azeotropic Distillation. Please…

Q: Which clue can be used to identify a chemical reaction as a combustion reaction? O Oxygen is a…

A: combustion reaction is a reaction in which a substance/hydrocarbon reacts with oxygen gas,…

Q: How many of cach etom are in the reactants? · How many of cach atom are in the products? A auminum &…

A: Required : Number of Aluminum and Bromine in the given reaction.

Q: Categorize each of the following as a physical or chemical change. Explain your reasoning: a)…

A: The problem is based on physical and chemical change. Phycisal changes are that changes where the…

Q: c. HCl in acetonitrile (CH;CN) H-CI н-с-с-N in d. HF in H20 H- F in H.

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Q: What is an indicator? A. An organic compound that changes color in acids and bases O B. The…

A: Indicator is substance which show a change in colour when contact with acids and bases. Indicator is…

Q: What are characteristics of detergent solutions?

A: Detergents, like soaps, work because they are amphiphilic: partly hydrophilic (polar) and partly…

Q: How many moles are in 12.2 g of copper sulfate

A: Mass of Copper sulfate , m = 12.2 g To find = Number of Moles .

Q: What is the label of rusting of an iron bridge?

A: Changes can be classified as physical changes and chemical changes. A physical change is the change…

Q: pH value at half of end point of the titration of ( 10ml of 0.1N HAc X 0.1N NaOH ) is 4.74 if (…

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Q: What affect the equilibrium of the concentration

A: The amount of solute that has been dissolved in a given amount of solvent is called Concentration of…

Q: One requirement for complete solubility is that elements cannot be the same as each other. Select…

A: According to Hume Rothery rule for a sold solution the two solids will be complteley soluble if…

Q: Match the product with the biomass feedstock: A) Bio-diesel B) Dimethyl Ether 1)Wheat 2)Sewage…

A: SOlution: to match the Bio mas vs thier product

Q: Which three types of reactions yield a product that is a chemically bonded combination of reactants?…

A: Here it is asked about the product so we need to observe all the processes and there respective…

Q: What type of reaction is displayed below? 2AI + 3NIBr2 - 2AIBr3 + 3Ni synthesis single replacement…

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Q: Distinguish the same chemical characteristics but have different physical properties?

A: Required : Which have the same chemical characteristics but difference physical properties.

Q: Why do solutions containing acids conduct an electric current

A: Aqueous solutions of acids dissociate H+ ions in the solution which helps conduct electricity…

Q: Mangrove bark is extracted by treating the finely ground wood with hot water. The original bark…

A: 100 kg original bark It contains 7 kg moisture, 33kg tannin, 20 kg soluble non-tannin materials, and…

Q: Differentiate between endothermic reactions and exothermic reactions?

A: Endothermic Reactions: A reaction that the system absorbs energy from its surrounding in the form of…

Q: Define the term Avogadro’s number?

A: Given: Need to define the term Avogadro's Number.

Q: 1. What is the pH of a solution prepared by mixing 80 ml of 0.1M NaH2PO4 and 100 ml of 0.1 M…

A: NaH2PO4  =  weak acid = A =(80/1000)x0.1= 0.008 moles Na2HPO4  = conjugate base = B =…

Q: NB NA B A W. W B

A: According to Newton's third law of motion, for every action, there is an equal and opposite…

Q: WHaT Is the total atoms in CH3(CH2)8COOH

A: The total numbers of atoms in the given compound can be calculated as,

Q: Write short note about molecular epitaxy?

A: Given:Write short note about molecular epitaxy.now,The term epitaxy comes from the Greek roots epi,…

Q: For the redox reaction given below complete the following: KMNO4 + Na2SO3 + H2O → MnO2 + NazSO4 +…

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Q: Pyrolysis gas chromatography is a particularly valuabletechnique for characterizing paint’s (binder,…

A: Answer Pyrolysis gas chromatography is a powerful analytical method for the categorization of…

Q: Discuss how surfactants remove dirt, oil, or stain.

A: The answer is below

Q: What is the right choice? Just the answers no need for explaining

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Q: How do we detect the smell of an incense stick?

A: The particles of hot (after lighting it) incense stick possess large kinetic energy and diffuse in…

Q: correct solution and don't copy paste in chegg and previous solution, that solution are incorrect So…

A: Answer

Q: 3.----- undergoes hydrolysis to ADP + P, which releases energy used by cells to do metabolic work.

A: The complete molecular reaction is : ATP+H20 →ADP+P i.e ATP undergoes hydrolysis to produce ADP+P

Q: When blue litmus paper turns red, the substance being tested is acidic basic

A: Here talking about the compounds PS test. Here given a blue litmas paper turns red. We have to find…

Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.