1. Compare physical and chemical properties. 2. Why is it necessary to state the specific conditions by which an observation is made? 3. Suppose we have two pieces of same type of wood that are obviously different lengths. We then place both in water. It is observed that both piece floats. What makes length an extensive property?

Q: Oil and water do not mix with each other. But when we add oil into water, oil floats over the water.…

A: Oil do not mix with water as oil is non polar and water is polar molecule and polar dissolve in…

Q: A chemist must dilute 35.3 mL of 1.80 M aqueous aluminum sulfate (Al, (So)) solution until the…

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Q: Q8 To what volume (in mL) should 6.27 mL of an 6.57 M acetic acid solution be diluted in order to…

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Q: 1. them. 3.2 CHEMISTRY HOLIDAY WORK 2022 Nalubula is investigating changes in mass of substances…

A: Mass of Zinc metal = 100 g  Mass of sulfuric acid = 200 g

Q: When you are dispensing stock solution into your graduated cylinder, you find that you have poured…

A: A stock solution is prepared by dissolving the solute into a solvent. The solution is further used…

Q: mL of a concentrated 0.02 M ibuprofen (aq) solution should be added to a 100 mL volumetric flask…

A: Initial concentration, M1 = 0.02 M The initial volume, V1 =? Final concentration, M2 = 0.002 M Final…

Q: You have a 3.5 M H3PO4 solution available. Complete the following questions about this solution:…

A: The process by which the concentration of a solution is reduced by adding a suitable amount of…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity - it is the amount of heat required to change the temperature by 1 Degree.

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is the amount of energy in the form of heat,  takes for increasing the temperature of…

Q: if you did not use volumetric glassware to prepare your standards, what assumptions were you making…

A: In the laboratory experiments, the volumetric flask is helpful in measuring the accurate volume of…

Q: Vinegar is a solution of acetic acid (the solute) in water (the solvent) with a solution density of…

A: Given : Concentration of vinegar = 0.80 M And density of vinegar solution = 1010 g/L Assuming 1 L of…

Q: A laboratory provides the following analysis obtained from a 50 ml sample of water. Ca²+ = 40 mg/L,…

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Q: A solution of 20.91 % by weight H2SO4 has a specific gravity of 1.150. What is the normality of this…

A: Answer-1 Specific gravity is the ratio of density of a substance with the density of water. Since,…

Q: Question attached

A: Molarity of a solution tells us how many moles of solute we get per litre of solution. Molarity…

Q: How do you know (evidence) that a chemical reactions has occurred. Give specific evidence at least.

A: Chemical reaction is process by which new products are formed as a result of the reaction between…

Q: Dissolving suger is an example of-(a) Physical change(b) Chemical change(c) Redox Reaction(d) None…

A: Physical change: Changes in only size, shape, state or appearance of a substance not in a chemical…

Q: 7. Which of the following processes are chemical changes? Give reasons. a) Making a Salt Solution.…

A: There are two types of changes that can occur in a process: S.No Physical changes Chemical…

Q: Assume household vinegar contains 5.00% acetic acid by weight and that the density of vinegar is the…

A: Given,  household vinegar contains 5.00% acetic acid by weight.  And the density of vinegar is the…

Q: How many mL of a 10.78M KI solution are needed to make 2.55 L of a 0.188 M KI solution? Be sure to…

A: The product of concentration (molarity) of the solution and the volume of the solution give the…

Q: density of water= 1 g/ml   volume of water = 12ml   mass of water= ?  mass of solute = 1g…

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Q: 1. What pieces of apparatus or equipment are used for measuring: a. Temperature? b. Small amount of…

A: Answers of above questions given below.

Q: Why are intensive properties useful for identifying a substance? A:They describe the amount of…

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Q: What information is important to those who will be analyzing the samples?

A: Various types of analysis of compounds are performed in chemistry. These analysis helps in finding…

Q: Is the mixture described in the table homogeneous or heterogeneous? Explain how you can tell.

A: A substance which consists of two or more elements or compounds which are not chemically reactive is…

Q: A mixture is made by combining 1.51 lb of salt and 4.73 lb of water. What is the percentage of salt…

A: Percentage by mass or mass percent (w/w) % is defined as the ratio of mass of a substance to total…

Q: Classify each change as physical or chemical.a. Sugar burns when heated in a skillet.b. Sugar…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Two solid objects, A and B, are both at room temperature and then placed in boiling water. The…

A: Heat capacity is amount of heat required by the object to change its temperature by degree 1.

Q: III: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g…

A: We can easily calculate the amount of soluble sugar in the given water at that particular…

Q: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g water,…

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Q: Fluoridation is the process of adding fluorine compounds to the drinking water. Fluoridated water…

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Q: Can you actually write this out? It makes it much more difficult to read when it gets written out…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: 4. (a) The sodium ion did not take part in this chemical reaction. What do we call such an ion? (b)…

A: sodium ions are spectator ions and undergoes solvation that is gets surrounded by negative pole of…

Q: A mixture of spaghetti and water is separated using a strainer, a physical method of separation.…

A: Filtration : It is the process of separating solid matter from the fluid one using a structure…

Q: 1.4L of a 2.50 M HNO, solution is added to water so that the final volume is 5.0L Express your…

A: Given: Molarity of HNO3 solution = 2.50 M             Volume of HNO3 solution = 1.4 L       On…

Q: A solution contains 38% phosphoric acid by mass. This means that ________. A. the density of this…

A: since % by mass is defined as the mass percent of solute present in the solution  Hence % by mass of…

Q: 1. A cup of coffee is made in the morming by pouring boiling water over ground-up coffee beans held…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: Is distillation a good method for separating a mixture of water and hexane?  Why or why not?

A: distillation, process involving the conversion of a liquid into vapour that is subsequently…

Q: Consider three 10-g samples of water: one as ice, one as liquid, and one as vapor. How do the…

A: The volume of solid and liquid phase of water can be calculated by the expression given in the…

Q: 7B.

A: Since mass of solute is constant and we are adding water only. Hence the final concentration =…

Q: Directions: Match the following terms in column A to the description that matches them in column B.…

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Q: a sample of unknown mixture has a total mass of 134g, a total volume of 113 cm3, and consists only…

A: Both volumes and masses are addictive in nature. If in a mixture, we add different mass  and volume…

Q: A student submerges an 18.0 gram metal sample in water. The density of the metal is known to be 12.5…

A: The given data: The mass of the sample = 18.0 g The density of the metal = 12.5 g/mL The final…

Q: Sodium and potassium are both shiny metals in pure form, but corrode rapidly in the presence of…

A: The reaction of sodium and potassium with oxygen gas and humidity can be shown through the balanced…

Q: A preparation of soda ash is known to contain 98.6% Na2CO3 (105.99 g/mol).  If a 0.678-g sample…

A:

Q: Why is chemical theory successful? What are some of the limitations of the theory?

A: The chemical theory describes the physical phenomena which give rise to chemistry as well as the…

Q: A homogeneous mixture composed of a solute and solvent________?

A: Homogeneous means having similar composition or state.  Simply, we cancnot differentiate between the…

Q: compound? element? solution? heterogeneous? pure substances? a. soda pop b. used motor oil freshly…

A: Compound is defined as two or more elements mixed together then compound formula Mixture is defined…

Q: A solution of 20.91 % by weight H2SO4 has a specific gravity of 1.150. What is the normality of this…

A: We have to find normality of solution

Q: A 1.06 den silk fiber has reached its maximum tenacity value. How many grams (force) would it take…

A: Given: Specification of silk fiber = 1.06 den It has reached maximum tenacity value. We know that,…