How many moles of water H2O, contain 2.0 x 1022 molecules of water?  Express the quantity in moles to two significant figures.

Q: A chemist plans to react 2.1 moles of aluminum with excess water according to the following…

A: Aluminium reacts with water to form aluminium hydroxide and hydrogen gas. The equation for the…

Q: What mass of oxygen gas, O2, from the air is consumed in the combustion of 702 g of octane, C8H18,…

A: According to the given equation, 25 moles of oxygen gas reacts with 2 moles of octane, to form 16…

Q: The chemical formula for calcium hydroxide is: Ca(OH), Calculate the molar mass of calcium…

A: To calculate the molar mass of Calcium hydroxide.

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: Given; density of water at 4.00Co=0.967 g/mL present volume of water we have=499.8 mL moles of water…

Q: What is the mass in grams of 4.11 x 1025 molecules of O,?

A: Given :- number of O2 molecules = 4.11 × 1025  To calculate :- mass (in grams)

Q: If 6.3 x 1025 molecules of CO2 are produced in a combustion reaction, what is the mass in kg of CO,…

A:

Q: What is the mass, in grams, of 2.90x103 mol of ammonium phosphate? Express your answer using three…

A:

Q: Consider the reaction: ZnO(s) + H20(1) - Zn(OH)2(aq) Given an initial mass of 19.85 g Zno, an excess…

A: The given reaction is, ZnO (s) + H2O (l) →  Zn(OH)2 (aq) Given that: mass of ZnO = 19.85 g To find…

Q: What is the mass (in kg) of 6.89 x 1025 molecules of CO2?  The molar mass of CO2is 44.01 g/mol.

A:

Q: Use the molar mass of Ca3(PO3)2 to calculate the moles of oxygen in 6.66 x 106 g of CP.  Give your…

A: given mass of  Ca3(PO3)2 = 6.66 x 106 g    Molar mass of Ca = 40.078 g/mol Molar mass of P = 30.974…

Q: How many grams are in 5.32 x 1022 molecules of CO2?

A:

Q: Calculate the mass of 0.75 mole of CaCl2. 5H20, in milligram.

A: Given: moles of CaCl2. 5H2O = 0.75 moles molar mass of CaCl2. 5H2O = 201.06 g/mol

Q: If  3.68 x 1021 formula units of sodium bromide are reacted with excess chlorine gas, how many…

A:

Q: A large neon sign is to be filled with a mixture of gases containing 8.662 g Ne, 2.44g Xe and 3.11 g…

A: Percentage by mass of an element in a compound can be expressed as the ratio of mass of the element…

Q: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Given the molar mass of the compound is 893.49…

A: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Molar mass of chlorophyll is 893.49 g/mol1 mol…

Q: Sodium hydroxide, NaOHNaOH, is a strong base that is used in industrial synthesis and processes such…

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Q: For the chemical reaction 3 KOH + H, PO, K,PO, +3 H,0 what mass of potassium phosphate is produced…

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Q: A. Mass of crucible: 12.214 g B. Mass of crucible and hydrate: 13.250 g C. Mass of crucible and…

A: Given, Salt : CuSO4

Q: 2. In order to react 109 grams of bromine gas completely, how many moles of aluminum are required?…

A: Aluminum reacts with bromine gas to form aluminum bromide. Write the complete reaction.…

Q: If you add 1.0 x 10^3 g of ethylene glycol as an antifreeze to a 4.0 kg of water in the radiator of…

A: Mass of ethylene glycol= 1.0×103 g gram molar mass of ethylene glycol =62 g  The calculation of…

Q: complete reaction

A:

Q: __________   to     ____________                 2CO + O2 → 2CO2               Given Units…

A: using the mole concept

Q: Ethanol, CH3CH2OH, is the principal type of alcohol found in alcoholic beverages, produced by the…

A:

Q: How many moles of mercury(II)oxide, HgO, are needed to produce 125 g of oxygen, O2?

A: Decomposition Reaction of HgO HgO decomposes to Hg and gaseous oxygen as the following reaction, 2…

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas ( CH4) by the following…

A: The balance chemical reaction :  2NH3(g) + 3O2(g) + 2CH4(g) ---Pt---> 2HCN(g) + 6H2O(g)  Mass of…

Q: 1. The following quantities are placed in a container: 1.5 x 1024 atoms of hydrogen, 1.0 mol of…

A: Given: Number of atoms of H = 1.5 × 1024 atoms. Moles of sulfur, S = 1.0 mol. And mass of diatomic…

Q: What is the mass in grams of 1.47 x 1015 molecules of NO?

A: Given : The number of molecules of NO=1.47 x 1015 The molar mass of NO=30.01 g/mol 30.01 g is the…

Q: 12, How many grams of O2 gas are there in 6.30 x 1026 molecules? 13. What is the mass in grams of…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: What is the conversion factor for converting 2.77X10^23 particles of CaBr2 to mass

A: The number of particles of CaBr2 is = 2.77×1023 The conversion factor of these particles to mass =?

Q: Density of iPrOH = 786 kg/m^3 molar mass of iPrOH= 60.1 g/mol

A:

Q: 410.0 mL of a 4.8 mol/L silver nitrate (AgNO 3 ) a reaction flask. Calculate the mass in kilograms…

A: Given Mass of silver nitrate =m g  Molar mass of silver nitrate = 169.87 g/mol Moles = Mass ÷  Molar…

Q: The chemical formula for octane is: CH; (CH,),CH; 9. Calculate the molar mass of octane. Round your…

A: Octane is saturated hydrocarbon compound which is a component of gasoline i.e pertrol.  It is…

Q: The molar mass of one empirical unit of the antidepressant rolicyprine (C7H&NO) is 122.1 g/empirical…

A:

Q: What is the total number of atoms in a sample of 30.77 g of ozone, O 3 gas?

A: Given : Mass of ozone i.e O3 = 30.77 g Since each molecule of O3 contains 3 atoms of O. Hence molar…

Q: In an industrial process, hydrogen chloride, HCl, is prepared by burning hydrogen gas, H2, in an…

A: Mass of a substance can be determined by multiplying number of moles present with its molar mass.…

Q: How many grams of O2 gas are there in 6.30 x l026 molecules?

A: The given molecules of oxygen are converted into moles.

Q: How many grams are in 2.3 x 1024 formula units of KNO3?

A: Welcome to bartleby!

Q: Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following…

A: Mass of NH3 = 4.90 g * Moles of NH3 = Mass of NH3 / molar mass of NH3 = 4.90 g / (17 g/mol) = 0.288…

Q: For the chemical reaction, 2 AGNO, + Na, CrO, - Ag, CrO, +2 NANO, what mass of sodium chromate in…

A: Given :-  2AgNO3 + Na2CrO4 →Ag2CrO4 + 2NaNO3  no. of moles of NaNO3 = 5.45 mol  To be calculated :-…

Q: Using the initial mass 1.510 g and the molecular formula of the hydrate CuCl2​⋅2H2​O). Predict the…

A: Mass of compound = 1.510 g Mass of water produced on heating the compound = ?

Q: How many molecules are contained in a glass that holds 490 g of water? How many moles does that…

A: Given, water is contained in a glass. and amount of water is =490 gwe are asked to calculate, the…

Q: How many grams of O2 are required to produce 1.23 x 1024 molecules of water? 2H2 + O2 2H2O 131 g…

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Q: What is the mass, in grams, of 5.44 moles of oxygen gas (O2)?

A:

Q: Consider the Haber-Bosch process for the synthesis of ammonia from its elements. Calculate the…

A:

Q: 4NH3+5O2=4NO+6H2O how much water is produced?in grams

A: In the reaction 4NH3 + 5O2 --> 4NO + 6H2O moles of H2O getting produced = 6.

Q: how many molecules are in the sample 2.0 g H2O? Express your answer using two significant figures.

A: Number of moles of water can be calculated as follows: No. of moles = MassMolar massNo. of moles =…

Q: C3H8 + 5O2    --> 3CO2 + 4H2O                                                         How many…

A: To calculate grams of oxygen required, we would use dimensional analysis method .  For this we would…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.