H2O 2. HCHO 12)__ Evaporate

Q: Determine the molarity of a solution formed by dissolving 79.9 g KCl in enough water to yield 750.0…

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Q: Choose which waste disposal container you should dispose of the unused 0.1 M FeClz solution. A…

A: Answer is given below :

Q: How many kilojoules of energy will be needed to decompose 13.5 grams of N2O5 gas? (MM N2O5= 108.02…

A: Given, 2N2O5(g) ⟶ 4NO2(g) + O2(g)  ΔH = 110 kJ/mol Mass of N2O5 gas decomposes = 13.5 g Molar mass…

Q: A student collects the following data for 2 solutions he is testing out: ELECTRICAL CONDUCTIVITY PH…

A: pH is a scale which is used to specify the acidity and basicity of solution. Acidic solutions have…

Q: For each of the following pairs of substances, select the one that is expected to produce a solution…

A: Generally strong electrolyte will break into its respective ions which move freely when dissolved in…

Q: Explain why the concentration of dissolved oxygen in freshwater is an important indicator of the…

A: Dissolved Oxygen or D.O is a measure of the amount of O2 dissolved in water (relatively). It…

Q: 9. You may have noticed that water sometimes drips from the exhaust of a car as it is running. Is…

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Q: According to the scheme below, How much energy is required to evaporate 54.06 g water (Molecular…

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Q: What volume of 12.6 M HCI must be added to enough water to prepare 5.00 liters of3.00 * ?M HCI a)…

A: Dilution of the solution: On dilution of the solution with pure water, the mole of solute remains…

Q: Explain Removal of sulfur dioxide from a gas stream?

A: The detailed process for the removal of SO2 from a gas stream includes the following steps: (i)…

Q: what is the mass percent of water in ca(no3)2・4h2o?

A: The molar mass of Ca(NO3)2.4H2O is 236.146 g/mol and the molar mass of water is 18 g/mol. The molar…

Q: A 500 mL sample of waste water contains 42.65 µg of mercury, Hg. If the density of the sample is…

A: We are given a sample of waste water that contains mercury. We have to find its concentration in…

Q: Is a solution of mercury II ions stable or unstable in water?

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Q: What is the molarity of a 6.2 mg/L solution of O2 ? O=16 g/mol * O 1.94 * 10-4 mol/L O None of them…

A: Given  Concentration = 6.2 mg/L     OR  6.2 ppm 1 mg = 10-3 gram  Therefore Concentration = 6.2×…

Q: which of the following compounds is insoluble in water? a. Na2S b. K3PO4 C. Pb(NO3)2 D. CaCl2…

A: We need to go through the solubility rules in order to predict the solubility of the given ionic…

Q: mass

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Q: O How many grams of H;PO4 are required to prepare 3.00 L of 0.300 M solution?

A: Since you have posted multiple question so I have solved first one for you. If you want to be solved…

Q: solution? How many grams of H2S(aq) are needed to make 5.00 L of a 0.125 M H,S(a0) 13.63g O 21.3 g…

A: Given :- Molarity (M) = 0.125 Volume = 5 L Mass of the H2S (aq) we have to find out Molarity = it is…

Q: how many moles of water can be produced from 6.0 g of C2H6

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Q: Determine the mass concentration of N2 in the water at 20℃ when the water is in equilibrium with the…

A: Henry's Law A gas solubility in liquid in liquid is proportional to its pressure over the solution.…

Q: Chlor-alkali plants electrolyze NaCl to produce the commodity chemicals caustic soda and chlorine…

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Q: 1. How would the mole ratio of NaHCO3 and HCl would be affected if the following occurred. a. The…

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

Q: What is the expected electrical conductivity of the following solutions? (a) NaOH(aq) (b) HCl(aq)…

A: a. NaOH (aq). The solution is ionic in nature and dissociates into Na+ and OH- ions. We now OH- ions…

Q: What is the process to get potassium hydroxide from potassium iodide?

A: The concentration of ozone in ground level air gas react with potassium iodide KI in a redox…

Q: Write a balanced chemical reaction for the condensationreaction between H3PO4 molecules to form…

A: Phosphoric acid(H3PO4) undergoes condensation reaction to form H5P3O10 as shown below. 3H3PO4     →…

Q: Heat is produced b. The concentration of the water increases c. The concentration of NaC2H3O2(aq)…

A: According to Le-chatlier principle if we disturb equilibrium by changing pressure,temperature, or…

Q: Please write a balanced equation and indicate the state. HCl(aq) + H2O (l)

A: Since HCl is a strong acid and H2O is neutral compound hence H2O will act as a base and will take…

Q: What volume of a 29.4% (w/v) hydrogen peroxide solution is required to prepare 454 mL of a 5.9%…

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Q: An experiment is performed to determine the volume of gas produced by the following reaction:…

A: Solvent has the following properties: It is present in larger quantity relative to solute. It is…

Q: Magic Acid® is the commercial name for a 1:1 mixture of fluorosulfonic acid, HSO3F, and antimony…

A: super acids are most powerfull acids , having acidity greater than that of 100 % sulphuric acid. In…

Q: What is the difference between dissolved oxygen and oxygen in air?

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Q: Why aeration is important in water treatment? Why Coagulation as a chemical tool is important in…

A: Introduction :  Water treatment is a process of removing unwanted chemicals , pollutants from the…

Q: A 500 mL sample of waste water contains 15.72 ug of mercury, Hg. If the density of the sample is…

A: The volume of the wastewater sample is = 500 mL The amount of mercury in this sample is = 15.72…

Q: 14. 25.0 grams of NaCl are dissolved in 75.0 grams of water in a 2.0 L container. a) What is the…

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Q: Calculate the mL of oxygen produced from 0.475 g of potassium chlorate at STP. 2KClO3 ⟶⟶ 2KCl + 3O2

A: Given that : Mass of KClO3 = 0.475 g The molar mass of KClO3 is 122.55 g/mol

Q: write a balanced equations and indicate the state. HCl(aq) + NH4Cl

A: Since both HCl and NH4Cl has same anion Cl-  Hence there is no net reaction that will be taking…

Q: Which of the following solutions has the lowest electrical conductivity? A) 0.10 M aqueous ammonia…

A: Electrical conductivity of a solution depends on extent of dissociation of solute and also nature of…

Q: Q.2. Write a balanced chemical equation to show how octane can be produced by the cracking of…

A: Cracking refers to the process of breaking up of large hydrocarbon molecules into smaller and more…

Q: What is the minimum ratio of hydrogen bonding atoms to carbon that must be present in a given…

A: Hydrogen bonding is formed by only three atoms such as F, N and O.

Q: when hydrated purple cobalt chloride, CoCl2 • 6H2O is heated, it is converted to blue anhydrous…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: How many grams of sodium are needed to release 4.0 L of hydrogen from water? 2 Na + 2 ?20 2 NaOH +…

A: The reaction for production of hydrogen gas from water usingsodium metal is given as:2 Na + 2 H2O →…

Q: Calculate the molarity of a solution prepared by dissolving 6.24 g of Nal in enough water to prepare…

A: Molarity is used to express the concentration of the solution  It is the number of moles of solute…

Q: 2. Calculate the freezing point of a solution containing 10 g of CeH12O6 dissolved in 259 g water

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Q: • Determine the number of grams of H2SO4 that would be contained in 800.0 mL of a 1.5 M H2SO4…

A: Given-> Volume b= 800 ml = 0.800 L (1L =1000 ml) Molarity = 1.5 M

Q: Br Br 4. 5. O 4 O 5 O 2 O 3

A: The product is decided by the stability of the carbocation. Stable the carbocation major will be the…

Q: How much of Earth's water is stored in the oceans? 3% 50% O 70% 97%

A: The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in…

Q: Eutrophication is Loss of biodiversity due to excess of N2 gas in water Loss of biodiversity due to…

A: Eutrophication is the process in which a water body becomes overly enriched with nutrients, leading…

Q: How many grams of hydrogen are needed to produce 1.82 g of water according to this equation? 2 H2 +…

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Q: Explain why the boiling point of H2O is higher than HCl.

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Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.