4. One product of the reaction of sodium and water is sodium hydroxide. What mass of sodium is needed to make 2.0 L of 0.075 M NaOH(aq)?

Q: A 30.0 mL sample of an unknown HClO4 solution requires 40.3 mL of 0.108 M NaOH for complete…

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Q: An aqueous solution contains 2.52 g of Pb(NO3)2 in one liter.  How many moles of each ionic species…

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Q: A 18.6 ml sample of vinegar (dilute acetic acid, CH3COOH) is titrated and found to react with 99.5…

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Q: 100.0 mL of an aqueous solution containing 0.250 M KOH(aq) is mixed with 100.0 mL of an aqueous…

A: First of all, we need to write down the balanced chemical.  The molar mass of Fe(OH)3 = 106.87g/mol

Q: Silver ions can be precipitated from aqueous solutions by the addition of aqueous chloride:…

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Q: You have 500 mL of a 0.125 M HCl(aq) solution and you want to dilute it to exactly 0.100 M. How much…

A: The given problem relates to stock dilution, so we can use the below relation to calculate the…

Q: Upon heating, 48.6 mL of water was evaporated from 180. mL of 0.302 M C6H12O6(aq). What is the…

A: Given that,concentration of C6H12O6 = 0.302 M = 0.302 mol/Lvolume of the solution = 180 mL = 0.18…

Q: In a neutralization reaction, 50.00 mL of 0.8500 M phosphoric acid reacts with 2.500 g of magnesium…

A: The answers to the first three questions can be given as - Given Data -

Q: 2 The active agent in many hair bleaches is hydrogen peroxide. The amount of H₂O2 in 13.7-g of hair…

A: given, amount of hair bleach = 13.7 g For KMnO4 molarity = 0.174 M volume = 48.9 mL

Q: A 2.88 g sample of iron ore is transformed to a solution of iron(II) sulfate, FeSO4. This solution…

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Q: How many moles and grams of nitric acid, HNO3 (aq), are there in 200.0 mL of 2.00 M HNO3 (aq)?

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Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

A: There are different terms to express the concentration of a solution like molarity , molality ,…

Q: What mass of Ca(OH)2 is required to react completely with a 25.00 mL sample of  0.1234 M HCl(aq)?

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Q: What mass (g) of MgCl2 is required to make 58 mL of 0.41 M MgCl2 (aq) solution

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Q: What volume of a 0.250 M AgNO3 (aq) solution Contains 2.34g of silver nitrate?

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Q: Solution A is 0.2400 M Ca(NO3)2(aq). Solution A is diluted by a factor of 3 to form sloution B…

A: The reaction taking place is  3As2O3 + 4NO3- + 7H2O + 4H+ → 6H3AsO4 + 4NO Balancing explanation :…

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

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Q: A 25.00 mL sample of NaOH is titrated with 21.35 mL of 0.6736 M H2SO4. What is the Molarity of the…

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Q: A solution contains 32.929 mL of 1.436 M Ca(OH)2 (aq). How many moles of hydroxide ion are present…

A: Ca(OH)2 dissociates completely in water into component ions as: Ca(OH)2 (aq)  ------->  Ca2+ (aq)…

Q: 31.  10.0 mL. of concentrated of H3PO4(aq) is diluted to the final volume of 250.0 mL.  Then 15.0…

A: Given that : The initial volume of H3PO4 = 10.0 mL The final volume of H3PO4 = 250.0 mL Molarity of…

Q: A buret is filled with 0.1517 M NaOH(aq). A 25.0 mL portion of an unknown acid HA(aq) and two drops…

A: The objective of this question is to calculate the number of moles of NaOH(aq) that were dispensed…

Q: The titration of 25.00 mL of an unknown concentration of H2SO4 solution requires 44.58 mL of 0.42 M…

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Q: 31.  10.0 mL. of concentrated of H3PO4(aq) is diluted to the final volume of 250.0 mL.  Then 15.0…

A:

Q: What mass of sodium chloride. NaCI, should be dissolved in enough water to make up 300 cm3 of 1.00 M…

A: Given, 300 cm3 of 1.00 M NaCI(aq)

Q: A volume of 125.0 mL of 0.565 M KOH (aq) is diluted with 425.0 mL of pure water.  What is the final…

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Q: What concentration of Zn is present in solution when 5.93 g of zinc metal is used to displace…

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Q: How many milliliters of 10.5 M HCl(aq) are needed to prepare 460.0 mL of 1.00 M HCl(aq)?

A: We have to find the volume for dilution.

Q: How many moles of the nitrate anion, NO3-1, are there in a 0.015 L sample of 0.15M Pb(NO3)2(aq)…

A: Given, the volume of solution =0.015 LConcentration of Pb(NO3)2(aq) =0.15 Mwe are asked to calculate…

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

A: Molarity (M) of a solution is defined as the number of moles of solute dissolved per volume of the…

Q: How many milliliters of 10.5 M HCl(aq) are needed to prepare 220.0 mL of 1.00 M HCl(aq)?

A: Given:Molarity (M1) = 10.5 M. Molarity (M2) = 1.00 M.Volume (V2) = 220.0 mL. Volume (V1) =?

Q: 37. When this equation: Fe(s) + AgNO:(aq) → Ag(s) + Fe(NO3)2(aq) is balanced, the net ionic equation…

A: Write the balanced molecular equation  Split electrolytes to ions to give the complete or total…

Q: Unit 4 Learning Checkpoint Question 9 A chemist performs a gravimetric analysis. The chemist…

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Q: How many milliliters of 12.0 M HCl(aq) are needed to prepare 710.0 mL of 1.00 M HCl(aq)?

A: Given --> M1 = 12.0 M  V1 = ? M2 = 1.00 M  V2 = 710 ml

Q: Consider the following precipitation reaction: 5 Fe2+(aq) + MnO4-(aq) + 8 H+(aq) → 5 Fe3+(aq) +…

A: The given reaction is: Volume of solution = 31.57 mL Weight iron sample = 0.276 g To determine: The…

Q: A buret is filled with 0.1517 M NaOH(aq).NaOH(aq). A 25.0 mL portion of an unknown acid HA(aq)HA(aq)…

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Q: When 250.0 milliliters of an aqueous solution of hydrochloric acid is reacted with an excess of…

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Q: Complete the balanced chemical reaction for the following weak base with a strong acid. In this…

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Q: If the absorbance of a solution of copper(II) ion decreases by 30.00% upon dilution, what volume of…

A: Absorbance of a solution is directly proportional to the concentration of the solution. On dilution,…

Q: Suppose you took a 3.00 mL sample of HNO3 (aq) of an unknown concentration, and find that you have…

A: Given: Volume of HNO3 = 3.00 mL Volume of NaOH solution = 20.30 mL Molarity of NaOH solution = 0.106…

Q: A noncarbonated soft drink contains an unknown amount of citric acid, H3 C6H5 O7. If 100. mL of the…

A: Given :  Volume = 100 ml  Volume of NaOH solution = 35.96 ml  Concentration of NaOH solution =…

Q: An unknown sample of ascorbic acid was titrated with 25.87 mL of 0.8198 M KIO3 (aq). Calculate the…

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Q: A new method being developed for water treatment uses chlorine dioxide, ClO2, instead of chlorine.…

A: The concentration of sodium chloride (NaClO2), M  = 2.0 M = 2.0 mol/L (M = mol/L) Volume of sodium…

Q: Suppose you need to prepare 1.00 L of 0.100 M HCI(aq), and all you have on hand is 0.250 M HCI(aq).…

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Q: A 3.27 g sample of iron ore is transformed to a solution of iron(II) sulfate, FeSO.. This solution…

A: The titration reaction given is, Given: Concentration of K2Cr2O7 = 0.110 M Volume of K2Cr2O7…

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

A: Given is, Saturated solution contains 539 g NaOH per litre. So, Mass of NaOH = 539 g Volume of…

Q: Hydrochloric acid solution is commonly found on laboratory shelves at a concentration of 6.00 M.…

A: Given, Concentrated HCl = 6.00M Diluted HCl = 1.24M Volume of HCl = 500mL

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.