What is the percent by mass of hydrogen in Ca(OH)2? Group of answer choices 2.72 % 1.36% 21.6 % 43.2 %

Q: 2 Fe + 3 CuCl2 --> 2 FeCl3 + 3 Cu What is the mole ratio of iron chloride (FeCl3) to copper chloride…

A: Mole ratio can be calculated by dividing the stoichiometric coefficients of the given species.

Q: According to the following reaction, how many grams of sulfur are formed when 37.4 g of water are…

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Q: Ammonium phosphate  NH43PO4  is an important ingredient in many fertilizers. It can be made by…

A: Reaction between phosphoric acid and Ammonia . H3PO4 + 3NH3 → (NH4)3PO4   We have , phosphoric acid…

Q: Ammonia  NH3 chemically reacts with oxygen gas  O2 to produce nitric oxide  NO and water  H2O .…

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Q: How many molecules are in 0.200 g CO2? C= 12.01 g/mole and O = 16.00 g/mole

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Q: How many grams of newmetal (Nm) are required to produce x.xx grams of newmetal oxide?  2 Nm (s) +…

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Q: What is the percentage composition of each element in ammonia, NH3?  82.35% N; 17.65% H  80.55% N;…

A: Ammonia(NH3) molecule contains one  nitrogen and three hydrogen atoms. We have to determine the…

Q: Calculate the mass in grams 3 sig figs of 4.06x1023 molecules of water

A: We know that, Number of mole = Given mass / Molar mass  Mass = Number of moles x Molar mass  1 mole…

Q: ce the equation below using the smallest set of whole numbers. What is the coefficient of H₂O?…

A: A balanced chemical equation is an equation in which an equal number of atoms of each element are…

Q: 49.4 g of Cr represents how many atoms?  4.27 x 10^-21 atoms  0.950 atoms  5.72 x 10^25 atoms  2.97…

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Q: Citric acid, CH,O,, is found in many fruits How many H atoms are contained in 0.1g of citric acia…

A: Given : Mass of citric acid = 0.1 g

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

A: The mass of one mole of molecules is known as molar mass. We know that the molar mass of water is…

Q: How many grams of NBr3 can be made from 525 g Br2  ?  N2   +   3 Br2   →   2 NBr3   +   44.0 kJ…

A: The reaction is as :-  N2 + 3Br2 ----> 2NBr3

Q: One mole of H2   A contains 6.0 x 1023 H atoms.   B contains 6.0 x 1023 H2 molecules.   C…

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Q: What mass of ammonia can be made from 20.0 g of hydrogen? 3H₂+ N₂ → 2NH₃

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Q: Calculate the empirical formula of each substance from their spectrograms . 1) Co = 0.672g As =…

A: The emperical formula can be calculated by finding the number of moles.

Q: what is the percent by mass of hydrogen in the preservative formaldehyde CH2O 6.713% 53.29%…

A: Given formula is , CH2O Formula mass= 30.026 g/mol

Q: Given the equation: HCO3 (aq)+ H20O= Co3(aq)+ H30 (aq). Identify the C HCO3 H20 Co3 2 H30*

A: Given , chemical reaction : HCO3- + H2O ---> CO32- + H2O

Q: The analysis of a compound gives the following percent composition by mass: C: 56.70 percent; H:…

A: The molecular formula C13H23S1O4 is calculated from percentage composition and molar mass of…

Q: What is the mass of 2.2 x 10 ° CO 2 molecules? O a. 1.0 x 10-12 g O b.1.6 x 10-13 g O. 12x 106 g O…

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Q: Which compound below is a molecular compound (or molecular substance)? NH3 KBr AGNO3 CaCl2

A: Molecular compounds are made when two or more element share electron in a covalent bond to connect…

Q: NH3+Na=NaNH2 + H2 assuming that you start with 44.5 g of ammonia gas and 17.5 g of sodium metal and…

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Q: Calculate the percent composition by mass of calcium sulfite, CaSO3 2. Calculate the percent…

A: To Solve this problem we will calculate the percentage composition of each element present in given…

Q: The number of moles  of 3.06 X 10–3 g of C2H5NO2 is 0.0408 moles.

A: In international system of units, Mole is considered as a unit which helps to calculate the amount…

Q: Equivalent weight of Al(OH)3 is а. 26 g O b. 27 g С. 78 д O d. 39 g

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Q: How many grams of water are produced by 1.0 moles of C3H8? C3H8 + 5 O2 → 3 CO2 + 4 H2O

A: 1.  Propane reacts with oxygen to forms carbon dioxide and water. The equation for the balanced…

Q: What number should be placed in the blank in order for this equation to follow the Law of…

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Q: 02Al + 3H2SO4 -> Al2(SO4)3 + 3H2 How many grams of aluminum sulfate would be formed if 250g H2SO4…

A: The balanced reaction taking place is given as, => 2 Al + 3 H2SO4 → Al2(SO4)3 + 3 H2 Given: Mass…

Q: Which of the following has the highest number of molecules? O 1.0 g of F2 O 1.0 g O2 1.0 g of Cl2 O…

A: We are given that each of compound is 1.0 g, we need to find the compound with maximum number of…

Q: The number of hydrogen molecules (NH2) present in 2.0 mol of hydrogen gas (H2). (Hint: Use the…

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Q: Calculate the mass in grams 3 sig figs of 3.10x1023 moles of water

A: Here, we have to find the mass of 3.10x1023 moles of water.

Q: Ammonium phosphate NH43PO4 is an important ingredient in many fertilizers. It can be made by…

A: Phosphoric acid H3PO4reacts with ammonia NH3to form ammonium phosphateNH43PO4.  H3PO4+3NH3→NH43PO4

Q: 12. The mass in grams of 10.0 million molecules of sulphur dioxide is:  SO2    Answers:  a)1.06…

A: 1 mole = 6.022×1023 ( Avogadro's number )   Molar mass : The mass of one mole of molecules of a…

Q: Question attached

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Nitromethane Fuel CH3NO2 is burned with atmospheric air in a stoichiometric ratio. The number of…

A: Nitromethane  is an organic compound with the chemical formula CH3NO2 . It has a boiling point of…

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Percentage by mass  = (Mass of element in 1 mole of compound/molar mass of the compound) × 100%…

Q: How many moles are in 6.02 x 10^23 atoms of CO2?

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Q: How many MOLECULES of water are present in 9.27 grams of this compound?   3.10 x 1023 molecules H2O…

A: Note : 1 mole compound contains 6.023 x1023 molecules. 1 mole = 18 grams water. 18 gr water contains…

Q: What is the percent NaCl in the sample?

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Q: 1. Answer the following questions about a pure compound that contains only carbon, hydrogen, and…

A: Dear student I have given answer to your question in the image format.

Q: What is the percent of carbon in the pesticide DDT (C14H9Cl5) ? The molar mass of C14H9Cl5 is 354.5…

A: The given data: The chemical formula for DDT = C14H9Cl5 The molar mass of DDT = 354.5 g/mol To…

Q: Calculate the mass of bromide from 12.9 g of sodium bromide. Group of answer choices 6.02 g 16.6 g…

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Q: How many moles are co Type in answers without units, using scientific notation-include three decimal…

A: Since you have asked multiple questions, we are solving first question for you. For remaining…

Q: 45.1 g of NO and 26.9 g of O₂ react together, what is the mass in grams of NO₂ that can be formed…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: How many grams of NaCl can be produced from 9 grams of Na? • 2Na + Cl2 –> 2NACI Calculate the final…

A: 1 mol = 6.022×1023 [ Avogadro's number ] The mass of 1 mole of atoms of a molecule is called its…

Q: What is the molecular mass (in AMU) and molar mass (in g mol-1) for chloroform (CHCI3) ?

A: The compound given is CHCl3.

Q: Which of the following has the highest percentage composition of oxygen? Na2CO3 LiNO3 Li2O CuO

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Q: How many atoms are contained in 12 g of water? O 2.4 x 1024 O 1.2 x 1024 4.0 x 1023 O 1.3 x 1023

A: To calculate the number of atoms in 12 g of H2O Molar mass of H2O = 18 g/mole Now we calculate moles…

Q: How many grams of NH3 can be produced by mixing 14 g of N2  with 6.0 g of H2? Given:…

A: Nitrogen reacts with hydrogen to form ammonia. The equation for the balanced chemical reaction is…

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.