If a sample of Ca(OH)2 is found to contain 5.34 mol of OH" ions how many moles of Ca?+ ions are present?

Q: 0.25 mol Fe2(CO3)3 contains mol carbonate ions.

A: Fe2(CO3)3  This Molecule dissociate as ; Fe2(CO3)3 → 2 Fe+3 + 3 CO3-2 1 mole Fe2(CO3)3 contains 2…

Q: A compound has an epirical formula of CH2O. If the molar mass of the compound is 60g/mol, what is…

A: emperical mass=12+2+16=30 n=60/2=2

Q: A flask contains 0.470 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: It is given that there is 0.470 mol of liquid bromine.

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A: We know that number of moles of any compound can be calculated using the formula  Mole(n) = Given…

Q: What mass of Cu(IO3), can be formed from o. 500 g of CUSO4 5H,O?

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Q: Given this equation: 3 MgCl, + 2 Al → 3 Mg + 2AICI3, if 4.8 moles of magneslum chloride reacted how…

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Q: A flask contains 0.390 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: Given, Number of moles = 0.390

Q: 0.25 mol Fe2(CO3)3 contains___mol carbonate ions

A: The given data: The moles of Fe2(CO3)3 = 0.25 moles To determine = The moles of carbonate ions

Q: For the chemical reaction 2KI+Pb(NO3)2---->PbI2+2KNO3 how many moles of lead (ii) iodide (PbI2)…

A: Given, 2.0 mol of potassium iodide (KI)

Q: the molar mass of potassium hydroxide, KOH?

A: The molar mass of potassium hydroxide KOH

Q: How many moles are present in 100. g of aspirin (C 9H 8O 4, molar mass 180.2 g/mol)?

A: The given mass of aspirin is 100g. Molar mass of aspirin is 180.2 g/mol.

Q: Ethanol, C2H5OH(), and water can be mixed in any proportions. This is useful for making a variety of…

A: Given, Total mass of the mixture = 80.0 g Let mass of water be 'x'  Therefore, Mass of ethanol = (80…

Q: What is the mass of O in a sample of 70.09g of CO2?

A: Two or more elements are combined to form a chemical compound. Here C and O combine to form CO2…

Q: What is the molar mass of NaOH? H2C2O4? H2C2O4·2H2O?

A: Calculation of the molar mass of NaOH--- Element Symbol Atomic weight Number of atoms Total mass…

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: A chemist requires 0.682 mol Na, CO, for a reaction. How many grams does this correspond to? mass: g…

A: Givenmoles of Na2CO3 =0.682 mol

Q: A chemist requires 0.589 mol Na, CO, for a reaction. How many grams does this correspond to? mass: g…

A: No.  of moles of sodium carbonate (Na2CO3) = 0.589 mol We know,  Number of moles = Given mass…

Q: For the chemical reaction,   2NaOH+H2SO4⟶Na2SO4+2H2OO   what mass of sulfuric acid in grams is…

A: Interpretation -  For a chemical reaction  which is given as -…

Q: The reusable booster rockets of the U.S. space shuttle employ a mixture of aluminum and ammonium…

A:

Q: A 52kg woman has 7.2 × 10⁻³ mol of hemoglobin (molar mass = 64456g/mol) in her blood. What quantity…

A: If the number of moles is known, Avogadro's number 6.022 x 1023 molecules, may be applied to compute…

Q: How many molecules are present in 1.36 g of AgNO3?

A: Given : Mass of AgNO3 = 1.36 g

Q: A student was given a sample of hydrated Na2CrO4 (molar mass of anhydrous Na2CrO4: 162.0 g/mol). She…

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Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: 3. How many formula units of CuCl can be produced by 75.0 g of Cu 0? Cu20 + HCI → CuCl + H2O

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A flask contains 0.490 mol of liquid bromine, Br2Br2. Determine the number of bromine molecules…

A:

Q: Suppose a student starts with 2.4319 g of a sand mixture and separates the components into 1.3012 g…

A: percent of SiO2 in the starting mixture =    =Mass of SiO2 × 100/ Total Mass of the mixture =…

Q: Based on their molecular masses, list the molar mass of each substance: Fe,0, CO Fe co,

A: In this question, the molar mass of the given compounds have to be determined: The molar mass of a…

Q: Ca + 2H2O ? Ca(OH)2 + H2 Using the equation above, how many molecules of H2 could be produced of 50…

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Q: grams of PbBr, w

A:

Q: 1. What is the molecular formula of the molecule that has an empirical formula of CH2CI and a molar…

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Q: According to the following reaction, how many grams of chlorine gas are necessary to form 0.672…

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Q: Ascorbic acid, or vitamin C (C6H8O6), is an essential vitamin. It cannot be stored by the body and…

A: Given : Mass of vitamin C i.e C6H8O6 in tablet = 500.0 mg = 0.500 g…

Q: Consider the reaction: 2CH4(g) + O2(g) – 2C0(g) + 4H2(g) Assuming complete reaction, how many moles…

A: The balanced equation is  2CH4   +   O2   -------- >   2 CO   +   4 H2  from the reaction 1 mole…

Q: (COG 4) Aspirin, C9H8O4, is commonly used to treat pain, fever, and inflammation. Given that the…

A: Since moles is given by  Moles = mass in g / molar mass

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: What is the molar mass(g/mole) of baking soda NaHCO3 find the mass of each atom and add them…

A: The compound given is NaHCO3  Hence each molecule of NaHCO3 has  1) 1 Atom of Na 2) 1 atom of C 3) 1…

Q: Calculate the number of moles of 100.0 g of BaSO4.

A: Since we know that number of mole an compound is calculated as given below formula Number of moles=…

Q: A sample is found to contain 66.8 % NaHCO, by mass. What is the mass of NaHCO, in 4.25 g of the…

A: Mass by mass percentage (w/w) When mass of solute in a solution is expressed in grams of solute in…

Q: if the molar mass of KHP is 204.22 g/mol what is the molarity of 20.07 g/L

A: KHP can be abbreviated as Potassium hydrogen phthalate. Molecular formula for KHP = KHC8H4O4. While…

Q: How many moles of Al are necessary to form 71.2 g of AIBR, from this reaction: 2 Al(s) + 3 Br,(1) –→…

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Q: ) What is the molar mass of calci um carbonate CacoO3) ? A) 55 g/mol B) 68 g/mol C) 100 g/mol D) 112…

A: Molar mass is the mass of a compound in units g/mol. It is the sum of atomic masses of element in…

Q: A bottle of the pain reliever ibuprofen (C 13H 18O 2, molar mass 206.3 g/mol) contains 500 200.-mg…

A: Number of moles of a chemical compound is used to express the amount of chemical compound present in…

Q: A 12.21 g sample of a compound that contains sulfur is analyzed by precipitating all the sulfur as…

A: Given: The mass of the sample = 12.21 g The mass of BaSO4 = 11.227 g Standard data: The molar…

Q: The density of carbon tetrachloride is 1.59 g/mL. How many moles are present in 50.0 mL of carbon…

A:

Q: According to the following reaction, how many moles of ammonium nitrite are necessary to form 0.822…

A: Given data,Moles of NH4NO2=0.822molMoles of HBr=0.221moles

Q: Complete the table below for calculating the molar mass of the ionic compound calcium iodide .…

A: To understand the heneralconcept , you should know some of the given points; •Molar mass is the mass…

Q: How many grams of ammonia, NH3, could be made from 6.0 mol of H2 and 2.0 mol of N2?

A: The amount of NH3 produced has to be calculated.

Q: Approximately how many molecules of H2O are in one spoonful of water, assuming that the spoon holds…

A: Given, a spoon holds about 18 mL of water.we are asked to calculate the number of water molecules in…

Q: What is the simplest formula for a compound that contains 0.50 mol Na, 0.50 mol S, and 0.75 mol O?

A: No. of moles of Na, S and O are 0.5, 0.5 and 0.75 moles respectively.  Na = 0.5 mole  S = 0.5 mole…

Q: Balance the following equation by filling the gaps with appropriate numbers. Ва + HCI BaCl2

A: The given  unbalanced equation is : ? Ba+? HCl→? BaCl2+?H2