Todoroki protects himself from an attack by generating an ice wall that weighs 250 kg. How many moles of water are in his ice wall? O 20 kmols O 10 kmols O 6.0*1023 mols O 15 kmols O 5 kmols

Q: Calculate the mole fraction of He in a mixture of He and N2 that contains 4.25 g of He and 29.5 g of…

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Q: What volume (in L) of 2.30 M FeBr2 would be required to obtain 0.502 moles of Br ions? Provide your…

A: the solution is as follows:

Q: 1. How does Avogadro's law explain the reaction between nitrogen gas and hydrogen gas to form…

A: Avadagro's law :  Avadagro's law states that if the temperature and pressure conditions are constant…

Q: Normality of 0.2 gram of CaCl2 (molecular wt=110) in 100 ml of water is--. O 3.60 O 0.036 O 0.35 O…

A: Please find your solution below : Normality is a measure of concentration which is defined as number…

Q: P4O10 was created by reacting with phosphorus solid at 3.600 kg of O2 under standard gas temperature…

A:

Q: Calculate the kinetic energy, in J/mol, of 1.00 mol of gaseous water molecules at the boiling point…

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Q: 2. How many grams of water will be lost when 8.000 g of YBr3'9H2O is heated?

A: Amount of YBr3•9H2O = 8 g  Amount of water lost after heating = ?

Q: Which force causes a weak attraction between the particles of a gas? O gravity O van der Waals force…

A: The matter is made up of small, indivisible particles called atoms. Electrons, protons, and neutrons…

Q: A sample contains 18.0 g N2 (MW = 28.02 g/mol), 50.5 g He (MW = 4.00 g/mol), and 34.6 g CO2 (MW =…

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Q: How many molecules of hydrogen gas are required to produce 15 g of water?

A: Given: The mass of water is 15 g. To find: Molecules of hydrogen gas

Q: What mass of oxygen is consumed when 54.0g of water is produced in the following equation? 2H2 + O2…

A: answer :-  The chemical reaction is give by - 2H2      +      O2        →   2H2O 2mol           1mol…

Q: A.) An aqueous solution of potassium acetate, KCH3COO, contains 3.47 grams of potassium acetate and…

A: The answers to the following Questions are given as:

Q: ) i) A liter of sulfuric acid solution containing 147.0 g of H2SO4 has a density of 1.29 g/cm³.…

A: Mass percent or weight percent of a solution is the mass of the solute by the mass of the solution…

Q: Plan mol grams need Melar mass. mol Q3 A rigid vessel contains 2.5mol of H2(g) How many grams of…

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Q: Calculate the mass of CaCO3 (MM = 100.0 mg/mmol) produces from heating 400.0 mg of CaC2O4•H2O (MM =…

A: Concept: heating an oxosalato salt of group-2 metal form corresponding carbonate of the metal and if…

Q: Which is more concentrated 5% H2SO4 or 0.5N H2SO4? Show your calculation. (MW of H2SO4 = 98 g/mol)

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Q: My question is how do i find the average molar mass of volatile liquid what is the equation how we…

A: We will use the equation (ideal gas law ) as PV= nRT  or PV=(m/M ) RT ,where m is given mass and M…

Q: at Prussure li00 atm 10.0moles Of Nitrogun gao in Cylinder w/ volume B.100m3, The molar mass it…

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Q: gas mixture of 2.31 g NH3, 31.2 g N2, and 0.58 g mol of H2O vapor is contained at a total pressure…

A:

Q: How many grams of CC are required to react with 34.3 gg of Fe2O3Fe2O3?

A: The reaction of C with Fe2O3 is as follows: Fe2O3 + 3C →2Fe + 3CO

Q: What is the mass percent of water in Ca(NO3)2·4 H,O? Provide an answer to two decimal places.

A: The compound given is Ca(NO3)2.4H2O. Assuming 1 mole of compound.

Q: A laboratory cylinder A contains 8g of hydrocarbon Xwith mol. weight 120g/mol, and its pressure is 1…

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Q: Volatile Liquid Unknowns Liquid Molecular Formula Molar mass Boiling point ('C at 1 atm) (g/mol)…

A: Given : 1) Observation table showing molecular formula, molar mass and boiling point values. To Find…

Q: Q.1/ For Simple Cubic shown in figure below, determine the fraction of the volume filled with hard…

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Q: Calculate the total number of moles of gas produced from the decomposition of 10.0 g of guanidinium…

A: Guanidinium nitrate is a powerful material used in rocket propellant. It has the molecular formula…

Q: At standard temperature and pressure (STP) conditions, what volume (in L) would be occupied by 6.17…

A: We have to predict the volume occupied by the gas.

Q: what volume of NH3 at STP is produced when 32 g of N2 is reacted with an excess of H2?

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Q: 1. Calculate the volume of 02 at STP needed to react with 150 g of CH4 (MM=16 g/mol) CH4 (g) + 202…

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Q: Solve this

A: Since the molecules of ice are arranged in a tetrahedral manner and will have a lower density than…

Q: What is the mole fraction of O2 in a mixture of 4.08 g O2, 4.14 g of N2 and 1.5 g of H2?

A: GivenMass of O2 = 4.08 gMolar mass of O2 = 32 g/moleMoles of O2 = Mass of O2Molar mass of O2Moles of…

Q: Students performed the ideal gas experiment using other metals. One group used 0.03 g magnesium…

A: Ans is option C. The calculated mass of the magnesium is expected to be less than the zinc.

Q: 1) a) Calculate the number of moles of NO2 that are present in a sample that is made up of 3.74 x…

A: One mole of any gas at STP occupies 22.4 L One mole substance contain 6.023 x 1023 molecules

Q: How many grams of Pb(NO3)2 (331.2 g/mol )are needed to prepare 200 ppm (w/v) of Pb*2 (207.2 g/mol)…

A: NOTE: please note none of the given option is correct.  I have  solved it correctly and written the…

Q: What volume of 2.50M sulfuric acid is needed to react completely with a 33.5g of aluminum?…

A:

Q: what is the method to calculate mole fraction of water in the natural gas?

A: The composition of a mixture of gases can be defined by the mole fractions of the gases present in…

Q: The boiling point of 1.00 kg of water at 749.2 mmHg is 99.60 °C. How much sucrose C12H22011 (molar…

A: Given, Mass of water solvent = 1.00 kg Boiling point of water solvent at 749.2 mmHg (Tb(water)) =…

Q: What volume at STP is occupied by 0.682 g of BCl3(g)

A: Molar mass of BCl3 , Mwt = 117.17 g/mol Given weight, W = 0.682 g Moles = W ÷ Mwt = 0.682 ÷ 117.17 =…

Q: how can the nobel gases differ from the solids? I do not understand how to solve this.

A: Various elements are arranged in the periodic table according to their atomic numbers. In the…

Q: What is the mass percent of water in Ca(NO₃)₂･4 H₂O? Provide an answer to two decimal places.

A: Given compound is Ca(NO₃)₂･4 H₂O We need to find mass percent of water present in this compound

Q: How many water molecules are in a block of ice containing 1.75 mol of water (H2O)?Express the number…

A: 1 mol of any substance contains Avogadro number of molecules.

Q: 1. What is the molar mass of CO;? 2. Calculate the number of mol present in a 0.376 g dry ice…

A: Since you posted multiple questions. so I will give answers of first three questions  Molar mass of…

Q: What is the mole fraction of hydrogen chloride in hydrochloric acid which contains 36% HCl by mass?…

A: Given, % by mass HCl = 36 % Mole fraction of hydrochloric acid (HCl) in the hydrochloric acid…

Q: 2NO2(g) → N2O4(g) If 25.0 ml of ​NO2 gas ​is completely converted into ​N2O4​ gas under the same…

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Q: what must be held constant in order to use Avogadros Law?

A: In Avogadro's law, two quantities remain constant.

Q: How many kilojoules are needed to evaporate 82 g of Br2?

A: Here reaction is ,  Br2(l) ----> Br2(g) i.e. vapourisation is taking place.

Q: Calculate the mole fraction and mass percent of 400.g of ethylene glycol (HOCH2CH2OH) in 1000.g of…

A: Calculate the mole fraction and mass percent of 400.g of ethylene glycol (HOCH2CH2OH) in 1000.g of…

Q: 3. Given a 0.0075 mol/L solution of KMnO, how would you prepare 50.0 mL of 0.0025 mol/L solution of…

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Q: Aqueous ammonia is 32% ammonia (by mass) NH3. The rest is water, H20  What is the mole fraction of…

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.