Water and rubbing alcohol have distinct properties and will react differently with the same substance. Observe these properties of water and rubbing alcohol: color, smell, and ability to dissolve salt. Record your observations in the table. To observe the solubility of salt in the liquid, put one-quarter teaspoon of salt into each container and stir. You may weigh out 1.5 g of salt on the electronic balance if you don’t have a one-quarter teaspoon measure. Observe the properties of the liquid in the container labeled unknown. Record the properties of the unknown substance in the table.   Now observe the properties of the liquid in the container labeled unknown. Record the properties of the unknown substance in the table.         Unknown Substance  color   smell    solubility of salt     Based on the observations, which liquid is the unknown liquid?

Q: 1.00 mL is taken from a stock solution of concentration 8.47 g/L and added to a 10.0 mL volumetric…

A: Given, Stock solution: Concentration of the stock solution (C1) = 8.47 g/L Volume of the stock…

Q: A substance has a solubility of 12.5 g per 100 mL of solvent at 100°C and 2.45 g per 100 mL solvent…

A: Given, At 100°C Solubility of of substance is 12.5 g per 100 mL of solvent At 10°C Solubility of of…

Q: During cold weather, calcium chloride is added to concrete to increase the speed at which the…

A: Here 100 ml samle of aqueous solution of calcium chloride is diluted to make volume 345 ml and the…

Q: A student prepares a 1.1 mM aqueous solution of acetic acid (CH₂CO₂H). Calculate the fraction of…

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Q: A chemistry student weighs out 0.0261 g of acrylic acid (HCH,CHCO2) into a 250. mL volumetric flask…

A: At equivalent point  Number of equivalent of acid = number of equivalent of base. Valence factor of…

Q: A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 33. mg of FeCl₂ into a…

A: According to the question, The mass of the FeCl2 = 33 mg The volume of the solution = 50 mL   Find:…

Q: A chemistry student weighs out 0.127 g of chloroacetic acid (HCH2ClCO 2) into a 250. mL volumetric…

A: We have to calculate the volume of NaOH needed to reach equivalence point

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Q: You perform your first titration using your NaOH with a KHP solution. Your KHP solution is made with…

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Q: a) If 42.1 mL of 1.02 M sodium hydroxide, measured using a graduated cylinder, is placed in a beaker…

A: Beaker doesn't exactly measure the volume of any substance. For the measurement of volume one should…

Q: Suppose 1.78 g of sodium bromide is dissolved in 350. mL of a 0.30 M aqueous solution of silver…

A: Molarity is one of the concentration terms used to define the amount of a solute dissolved in a…

Q: Some cooks will tell you that they salt the water used to boil pasta because adding table salt…

A: Given : Elevation in boiling point of solution required = 5 oC And volume of water = 2 L = 2000 mL…

Q: Most analytical machines used in science can either measure absorbance of light, like the…

A: Given: mg/L NO3- Absorbance 0 0 0.1 0.183 0.3 0.542 0.5 0.914 0.7 1.298 1 1.61

Q: It is always important to label everything in the dispensary or the medicinal chemistry laboratory.…

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Q: Which of the following processes require(s) chemical methods?    Separating a heterogeneous mixture…

A: Breaking a compound into its constituents elements requires chemical method. The two or more…

Q: A pool cleaning solution is mixed from three different bottles of solution. The first bottle…

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Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

A: Given: density of solution = 1.149 g/cm3 Molar mass of K2CO3 = 138.205 g/mol Mass percent of…

Q: To measure the blood Ca2+ concentration of a patient’s sample, 5.00 mL of blood was diluted to a…

A: To solve this question we have to careful about units and how many times successive dilution was…

Q: One way in which the useful metal copper is produced is by dissolving the mineral azurite, which…

A: The balanced reaction taking place is given as, => Fe (s) + CuSO4 (aq) -------> Cu (s) + FeSO4…

Q: 5. In a flask, you heat a mixture of 735.4 g of sodium nitrate and 700.0 grams of water until all of…

A: Given that, Mass of sodium nitrate dissolved in 700 g hot water = 735.4 g Mass of sodium nitrate…

Q: Suppose 2.04g  of potassium chloride is dissolved in  300.mL  of a  40.0mM  aqueous solution of…

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Q: How many milliliters of a 4.10 M sucrose solution would be needed to prepare each solution? Note:…

A: Milliliters of Sucrose Solution NeededWe can use the dilution equation to find the volume of the…

Q: Use the graph below. At 40 °C, what mass of NANO3, in grams, would dissolve in 25 g water to make a…

A: The solubility curve of salts given is

Q: Think about any flavored beverage that is not colorless (tea, soda, sports drink). Suppose you share…

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Q: Sodium chloride (NaCl) was isolated from SiO₂ and CaCO3 by dissolving it in distilled water. Calcium…

A: When the mixture containing sodium chloride (NaCl), silicon dioxide (SiO2), and calcium carbonate…

Q: A chemistry student weighs out 0.425 g of citric acid (H₂CH₂O₂), a triprotic acid, into a 250. mL…

A: Information of question

Q: A student dissolved 230.8 grams of cesium chloride in 100.0 grams of 90 °C water.  The student then…

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Q: A chemistry student weighs out 0.0812 g of sulfurous acid (H₂SO3), a diprotic acid, into a 250. mL…

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Q: chemistry student weighs out 0.160 g of sulfurous acid (H2SO3), a diprotic acid, into a 250. mL…

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Q: A)  Calculate the molarity 12.21 mg KI in 107.6 mL of solution         Express your answer using…

A: Molarity of a solution is defined as the number of moles of solute to the total volume of solution.

Q: A chemist prepares a solution of sodium bromide   NaBr    by measuring out  0.25g  of  NaBr  into…

A: Given :-  Mass of NaBr = 0.25 g  Volume of solution = 50. mL  To calculate :-  Molarity of Br- ions

Q: A chemist prepares a solution of mercury(I) chloride (Hg₂Cl₂) by measuring out 1.96 mg of mercury(1)…

A: The mass of mercury (I) chloride (Hg2Cl2) is 1.96 mg.The volume of the solution is 500. mL.To find…

Q: An analytical chemist weighs out 0.159 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Neutralization reaction : Equivalent amount of acid reacts with a equivalent amount of base This…

Q: In 2014 (the last year for which I can find data), Utah County had a carbon monoxide (CO) average…

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.