1.Why is tap water a homogenous mixture, whereas distilled water is a pure substance?  Explain.

Q: Polychlorinated biphenyl (PCBs) are environmental contaminants composed of carbon, hydrogen, and…

A:

Q: compare and contrast the five types of chemical reactions (synthesis, decomposition, single…

A: There are majorly 5 types of reactions. Synthesis reaction Decomposition reaction Single replacement…

Q: a) What is the mass of the original sample? b) What is the mass of NaCI in the sample? c) What is…

A: Mixture is material made up of two or more substances. separation of mixture is process in which the…

Q: Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant,…

A:

Q: What is the basis of distillation?

A: There are various techniques which are used for the separation of liquids. Some of these are…

Q: Read the following scenarios and then answer the questions in the space provided below. Scenario 1.…

A: Hello. Since the question contains multiple sub-parts, the first three sub-parts are solved. In case…

Q: microscopic

A: According to the question, we need to describe the microscopic view of compound sodium chloride i.e…

Q: explain how alcohol became a chemical compound

A: A compound is a chemical species which has two or more elements in its composition. For example,…

Q: If You observe a the formation of heat when two solutions are mixed you can reasonably conclude that…

A: Chemical reaction, a process in which one or more substances, the reactants, are converted to one or…

Q: What chemical reactions do you observe in nature?

A:

Q: Drag and drop each term to correctly complete the prompt. Compounds are formed when two or more…

A: Element and compounds are defined based on the composition of atoms. Based on the composition of…

Q: State the law of conservation of mass and energy as it applies to a chemical reaction.

A: The law of conservation of mass and energy it applies to a chemical reaction has to be stated below.

Q: where are each chemical component

A: Amines are Basic compounds and soluble in Inorganic acids like HCl.  Carboxylic acids are soluble in…

Q: What is the Mass pf Cl- found in the water sample (in grams)? %(w/w) Cl- in the water sample?…

A: Given data,Mass of titrant(AgNO3) used in trial 1=0.76gMass of AgNO3 used in trial 2=0.73gMass of…

Q: What three types of information does a balanced chemicalequation provide? How?

A: Balanced chemical equation for a chemical reaction is the one that has same number of atoms on both…

Q: Changes in natural properties caused by chemical reactions are expected to explain some basic…

A: To better understand what really a chemical reaction is, we should know about the basic of a…

Q: Why powdered sugar will dissolve fastest in warm water compare to granulated sugar and cubed sugar?…

A: The homogeneous mixture of two or more substances is known as a solution. The substance present in a…

Q: When a candle is lit and allowed to burn for 15 minutes, some wax drips and collects at the base of…

A: (a) When a candle burns the physical change can be easily seen because the solid wax is converted…

Q: In Law of Conservation of mass, is there an exception to this law? I read some that gas is an…

A: The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither…

Q: is the gray powdered zinc metal reacts with purple iodine to give a white compound a physical…

A:

Q: substances have a definite and unchanging chemical composition. Examples of substances are salt,…

A: Substance have a definite and unchanging chemical composition. Examples of substances are salt,…

Q: Why a piece of wood is a mixture?

A: Wood is a substance made up of cellulose, hemicelluloses, and lignin.

Q: What do you think will be formed when you mix NaCl crystals with water? Can you separate them? if…

A:

Q: A science fair volcano doesn't contain réal Java, of course, but in a very significant way, the…

A: Please find your solution below : The reaction between solid acetic acid and solid sodium…

Q: Sugar-water solution Sand ethod to separate the sand from the other substances in the

A: As we know,  sand form heterogeneous mixture with water.  So, we can separate mixture by simple…

Q: Adding hydrochloric acid to sodium hydrogen carbonate will form sodium chloride, or table salt. If…

A: HCl + NaHCO3 → NaCl + H2CO3 If 1 mole of HCl is added, 1 mole of NaCl is formed. If 0.5 mole of HCl…

Q: When solid NaCl dissolves in water Na + cations and Cl anions leave the solid crystal and are…

A: NaCl is an ionic compound that is composed by sodium ions and chloride ions. It forms face-centered…

Q: Students are given samples of unknown chemical compounds. The samples could be ionic, molecular,…

A: Experiment -1 Solubility in water: Ionic compound are soluble and molecular compounds are insoluble.…

Q: Which one of the following represents a chemical change? a- Mercury (II) oxide is heated to and…

A: A chemical reaction is a process in which one or more substance called reactants, are converted to…

Q: Two chemicals at room temperature are mixed and their container starts to feel warm to the touch.…

A: Chemical reactions are of two types- Endothermic and exothermic reactions. When heat is absorbed in…

Q: Solvent Hydrogen Oceans Ponds Cooking Cleaning Boiling Freezing Properties Colorless Tasteless Oil…

A: The blanks are filled below:

Q: Two students were having a disagreement about whether NaNO3 mixed with water results in a physical…

A: Dissolving a solid into a liquid is a physical change because only the state of matter changes and…

Q: Draw a molecular level picture which illustrates that what happens as the approaching atoms begin to…

A: We have to Draw a molecular level picture which illustrates that what happens as the approaching…

Q: Four grams of the crystalline compound “A” dissolve in 100 mL of methanol at room temperature. At…

A: The solubility of compound A in 100 mLof methanol at room temperature is given to be 4 g while the…

Q: What is the 1st Compound Notatio

A: Interpretation- To tell about the 1st compound notation -      Introduction -  Notation is basically…

Q: Cl, / CCI, (solvent) H,SO, / ethanol

A:

Q: In a chemical reaction, the matter is neither created nor destroyed. True or false? Explain how?

A: Law that states mass can neither be created nor destroyed is called law of conservation of mass.…

Q: Explain why are some metals found in their elemental states in nature? Give some examples? Why are…

A: The substance that shows the luster on freshly cutting, polishing, and has the thermal, electrical…

Q: 3. Place a piece of magnesium ribbon at the end of a glass tubing. Ignite it in the Bunsen flame. a.…

A: Given: a piece of magnesium ribbon is burnt by bunsen flame

Q: placed

A: Dear student this question is related to basic chemistry.

Q: what are the physical properties of a meteor? - what are the chemical properties of a meteor?

A: A meteoroid that enters the earth’s atmosphere and vaporizes is called a meteor. It is also called a…

Q: A science fair volcano doesn't contain réal Java, of course, but in a very significant way, the…

A: An acid is a substance that enhances the concentration of hydrogen ions (H+) in solution. If the…

Q: Why Cubed sugar will dissolve slowest in warm water compare to granulated sugar and powdered sugar?…

A: The homogeneous mixture of two or more substances is known as a solution. The solution is made from…

Q: Question #1 In the boxes below, draw models to show what you think water, ethanol, and the mixture…

A: The structure and composition of water, ethanol, and their mixture have been described below.

Q: Metal or Nonmetal Explanation: State of Matter b. Metal or Nonmetal Explanation: Luster Metal or…

A: Metal : It is a type of solid substance which is a hard , shiny and very good conductor for heat…

Q: 82. Danny is being careful in handling acids in the laboratory. In diluting acids, she puts the…

A: Reaction of acid with water is exothermic which is vigorous in nature. So, its necessary to add…

Q: What is polarity in chemistry

A: It is a physical property of compound which relates other physical properties such as melting point,…

Q: If you are to compare decantation and filtration as separation processes, which do you think is more…

A: Filtration is method to separate a mixture of a solid in a liquid or a solid in a gas.

Environmental Pollution

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