How many grams of oxygen are there in 0.25 moles of O2? If 4 moles of NaCl are dissolved in water, what is the total number of ions present? What is the molar mass of calcium carbonate (CaCO3)? If 0.2 moles of a substance weigh 9.6 grams, what is its molar mass? How many moles of sulfur are present in 64 grams of sulfur?

Q: Calculate the molar mass of acetylsalicylic acid (C9H8O4). How many acetylsalicylic acid molecules…

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Q: The hardness of water (hardness count) is usually expressed in parts per million (by mass) of CaCO3,…

A: Given,The water sample with a hardness count of 175 mg CaCO3/L

Q: How many moles of Al are necessary to form 38.6 g of AIBR3 from this reaction: 2 Al(s) + 3 Br2(1) →…

A: Answer: 0.1447 Moles of Aluminium (Al) necessary to form 38.6 gram of AlBr3.

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many moles of water can be made…

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Q: 4. Calculate the number of moles of CuSO4•5H2O in 100 g of the solid.

A: Given details, Mass (m) = 100g Atomic mass of CuSO4.5H2O = 249.68 g/mol To calculate the number of…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

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Q: What is the molarity of a barium chloride solution prepared by dissolving 9.9 grams of BaCl2•2(H2O)…

A: Molarity = (Mass/molar mass)(1000/V(ml)).Mass = 9.9g.Molar mass = 244.26g/mol.Volume = 151.0ml.

Q: An experiment using the reaction below produces 23.26 grams of chlorine gas (Cl2). What mass of HF…

A: Given that : Mass of chlorine gas produced = 23.26 g The molar mass of chlorine gas is 70.91 g/mol.…

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: Each 100 ml of an antacid contains 3.7 g of aluminum hydroxide (Al (OH) 3), 11.66 g of magnesium…

A: To determine moles of any substance present  we use following formula    moles = massmolar mass

Q: What mass of HCl in grams is neturalized by a dose of milk of magnesia containing 3.26g Mg(OH)2?

A: Given :- mass of Mg(OH)2 = 3.26 g  To calculate :- mass of HCl (in g)

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: How many molecules of CO2 are there in 2.445 g CO2?

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Q: Suppose you isolate an acid from clover leaves and know that it contains only the elements C, H, and…

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Q: An experiment using the reaction below produces 44.78 grams of chlorine gas (Cl2). What mass of HF…

A: 1- First determine the moles of Cl2 gas : moles of Cl2 = [ mass / molar mass ]  moles of Cl2 = […

Q: How many moles of NaOH are there in 51.8 mL of 0.300 M NaOH?

A: The given data: The volume  = 51.8 mL The molarity of NaOH =  0.300 mL To determine: The number of…

Q: How many grams are there in 6.5 X 10^25 molecules of CO2?

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Q: How many moles of Al are necessary to form 83.0 g of AIBR, from this reaction: 2 Al(s) + 3 Br,(1) →…

A: For the reaction: 2Al     +   3Br2 →  2AlBr3 2 mol        3 mol         2 mol Given : Mass of AlBr3…

Q: What mass of phosphoric acid can we produce by the following reaction           P4(s) + 5 O2(g) + 6…

A: The reaction taking place is  P4(s) + 5 O2(g) + 6 H2O(l) → 4 H3PO4(s) Given : mass of P4 = 334.2 g…

Q: 3 Cu + 8HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation, how many grams of water can be made…

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Q: Directions: Enumerate at least ten (10) hazard and risk in the workplace and the corresponding ways…

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Q: What is the total number of nitrogen atoms on the right-hand side of this chemical equation? 3…

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Q: What is the mass in milligrams of the solute in 25.0 ml of 0.275 M NaOH? (atomic weights: H=1.01;…

A: Number of moles = mass/molar mass  So, mass = moles × molar mass   Molarity = moles of solute/volume…

Q: many moIES grafms of carbon dioxide?

A: Given-> Weight = 50 gram

Q: For the following reaction, 99.2 grams of perchloric acid (HClO4) are allowed to react with 27.3…

A: 12 HClO4 (aq) + P4O10 (s) →4 H3PO4 (aq) + 6 Cl2O7 (l) Amount of products depend on the limiting…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: A beaker contains 100.0 mL of water. To it is added 10.0 mL of dilute nitric acid (HNO3). Calculate…

A: Volume of water = 100.0mL  Volume of dilute nitric acid = 10.0mL Total volume = 110 mL  Density of…

Q: CH4 + 20, → CO, + 2H,0 You have 30 g CH, that you burn in oxygen. How many grams of water (H,0) can…

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass.…

Q: Nitrogen dioxide (NO2) is one of the compound produced in combustion reactions of a fossil fuel. The…

A: Balance the given chemical equation  :

Q: The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances…

A: Formulae used: Molarity =Mole soluteSolution in Litre

Q: The number of moles in 37.80 g of C2H6O (molar mass = 46.1 g/mol) is  9.072 x 10^2  8.200 x 10^-1…

A: Correct: 2.  8.200 x 10-1 Given that,  Weight of C2H6O given = 37.80 g Molar mass of C2H6O = 46.1…

Q: How many moles of Al are necessary to form 28.6 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Given , mass of AlBr₃  = 28.6 g Thus, moles of AlBr₃  = mass of AlBr₃ molar mass of AlBr₃  = 28.6…

Q: How many molecules of CO2 are there in 98.3 grams?

A: 1 mole of any compound contains Avogadro number6.022×1023 of molecules.We have to find number of CO2…

Q: 3 Cu + 8HNO3 --> 3 Cu(NO3)2 + 2 NO + 4 H₂O In the above equation how many grams of water can be made…

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Q: How

A: moles of water = ( molecules of water ) / ( Avogadro number )  Where :  Molecules of water is 2.0 •…

Q: When a 19.34 gram piece of lithium is placed in a sample of water, how many grams of hydrogen gas…

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Q: The density of acetic anhydride is 1.08 g/mL.  Calculate the mass (in grams) of acetic anhydride…

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Q: What is the mass (in grams) of 5.03*10^22 molecules of CO2 molecules?

A: 1 mole = 6.0226 x 1023 Molar mass of CO2 = 44.01 g/mol Given that: Number of molecules of CO2 = 5.03…

Q: What is the mass in milligrams of 7.22×10^20 molecules of CO2?

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Q: Use the concept of molarity to calculate the molarity of a solution prepared by dissolving 25.00 g…

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Q: For the chemical reaction,   2NaOH+H2SO4⟶Na2SO4+2H2O   what mass of sulfuric acid in grams is…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: How many moles of Ba(OH)2 are present in 215 mL of 0.800 mol L Ba(OH)2? Express your answer…

A: Given: Volume of Ba(OH)2 = 215 mL = 0.215 L Concentration of Ba(OH)2 = 0.800 mol/L

Q: The density of phosphoric acid (H3PO4) is 1.885 g/cm². How many moles are present in 0.245 L of…

A: NOTE : The units of density will be g/cm3 and not g/cm2. Given : Density of H3PO4 = 1.885 g/cm3 =…

Q: Valproic acid, a medication used to treat epilepsy and bipolar mania, contains only C, H, and O.…

A: We have to calculate the molar mass of compound.

Q: mass

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".