An analysis of a compound shows that it contains 19.8 g of Carbon, 2.50 g of hydrogen, and 11.6 g of nitrogen. 1. What is the percentage composition of carbon? 2. What is the percentage composition of hydrogen? 3. What is percentage composition of nitrogen?

Q: Convert 0.41 moles CO to number of molecules.

A: Given :- number of moles of CO = 0.41 mol  To calculate :- number of molecules of CO

Q: Phogene (COCl2) can be manufactured by mixing carbon monoxide with chlorine gas. CO + Cl2 → COCl2…

A: CO + Cl2 .....> COCl2  Given that :  Moles of carbon monoxide(CO) = 7.25 moles

Q: For items 1 and 2: 4NH3 + 302 6H2O + 2N2 1. What is the mole ratio of NH3 to H2O? 2. What is the…

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Q: Consider a 1.245 g sample of glucose (C H, O.). Calculate the following. moles of glucose in the…

A: Since you have posted multiple questions, the answer for first question is given below. Kindly…

Q: Consider the reaction between sodium metal and chlorine gas to form sodium chloride (table…

A: Question is to be solved on stoichiometry of equation. given gram atomic mass of Na =23 g Gram…

Q: 5. Here is the equation for the reaction between sodium metal and chlorine gas: 2Na + Cl2 2NaCl This…

A: Since you asked question number 5 so, as per Q&A guidelines of portal I solve question 5 for…

Q: For items 3 and 4: SIO2 + 4HF SİF4 + 2H2O 3. What is the mole ratio of HF to SIF4? 4. What is the…

A: Number of moles is calculated by dividing given mass with molecular mass.

Q: Stoichiometry is based on the law ofA. constant mole ratios.B. Avogadro’s constant.C. conservation…

A: Correct answer is (A) constant mole ratios. Stoichiometry is based on constant mole ratios in which…

Q: what is the mole ratio between aluminum oxide and oxygen gas? 2Al2O3->4Al+3O2

A: The balanced chemical equation of ten above reaction ; 2Al2O3  --->   4Al + 3O2   From this above…

Q: Consider the given chemical equation: Pb3O4+x HCIy PbCl2 + Cl2 + z X, y and z respectively are

A: The given chemical equation is  Pb3O4 + x HCl →y PbCl2 + Cl2 +z O2 The values of x, y, z are ------?

Q: Oxygen makes up 46.7 % by mass of the Earth's crust. How many grams of oxygen are present if a…

A: Percent by mass = (mass of given component/total mass of sample) × 100%

Q: 7 1 mole Fe₂(CrO₂)₂ = g Fe, (Cro),

A:

Q: How many moles are equal to 4.5 x 1023 molecules of carbon monoxide? (Round to two decimal places).

A: No of CO molecules = 4.5 × 1023 molecules No fo moles = to be determined

Q: Which law would you use to compare CO and CO2 ? Explain. Without doing any calculations, determine…

A: There are three laws of chemical combinations, which are: 1. Law of conservation of mass 2. Law of…

Q: 1. A 4.24mg sample containing only Carbon, Hydrogen, and Oxygen was burned and produced 6.21 mg of…

A: Given  Total mass of sample = 4.24 mg mass of CO2 = 6.21 mg mass of H2O = 2.54 mg (a) Moles of C…

Q: The Earth’s ozone layer is under attack in part by chlorine released when ultraviolet radiation…

A: Mass percentage is calculated using the following formula: Mass percentage of an element  = (molar…

Q: Given: NaBr + Sn(NO3)2 --> NaNO3 + SnBr2 a. When this equation is balanced, what is the sum of the…

A: NaBr + Sn(NO3)2 --> NaNO3 + SnBr2 To get the Balanced chemical equation , we have to add the…

Q: 5. How many grams of Oxygen are needed to make 7.1 g of Chlorine? SeCl6 + 02 --> Se02 + Cl2 O 1.1 O…

A: Gien mass of Cl2 produced= 7.1 gThe given balance reaction is:SeCl6 + O2  → SeO2 +3 Cl2 1 mol of O2…

Q: What is the percent by mass of carbon

A: Percent by mass = (mass of C/total mass of compound) × 100%

Q: Write A if only statement A is true; Write B if only statement B is true; Write C if both…

A: Since you have asked a question with multiple subparts, we will answer only first three subparts for…

Q: what is the number of moles of calcium carbonate reacted?

A:

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: Mole is the term used to express the quantities of substances involved in a chemical reaction. Mole…

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Q: In one experiment, a student used 0.21 g of aluminum and excess hydrochloric acid. a. Calculate the…

A: Given that 0.21 g aluminium react with excess hydrochloric acid.

Q: How many hydrogen atoms are present in 10 g of sugar?

A: Given data: The mass of sugar m = 10 g. To find: The number of hydrogen atoms.

Q: What percentage of NH4NO3 is nitrogen?

A: Mass percent of element  is the mass of element present in 100g of the compound. Mass percent of…

Q: A compact car gets 37.5 miles per gallon on the highway. If gasoline contains 84.2% carbon by mass…

A: Mass of gasoline required can be calculated as

Q: How many molecules of water are made from 8 molecules of H2? molecules

A: Balanced equation for the formation of water from hydrogen and oxygen is as follows. 2H2+O2→2H2O…

Q: a. If 1.00 g of aluminum hydroxide reacts with 3.00 g of sulfuric acid, what is the mass of water…

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Q: g. If the chemical reaction produces 56.2 grams of NH3, then how many moles of N2 gas were needed?…

A: N2+3H2–>2NH3 From this Balanced chemical equation we get that ; 1 mol N2 React with 3 mol H2 and…

Q: A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl.  Another sample of…

A: A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl. Another sample of the…

Q: Phosphorus reacts with oxygen to form phosphorus(III) oxide as shown. 4P(s) + 302(g) → 2P203(s)…

A: The details solution for this is provided below in attach image.

Q: Consider the following chemical reaction. 3 Zn(C₂H₃O₂)₂(aq) + 2 Na₃PO₄(aq) → 6 NaC₂H₃O₂(aq) +…

A: The formula weight (FW) of a compound is calculated using the following expression: FW=∑ni×Mi where…

Q: 25. A sample of a compound contains 9.49g silver and 3.12g chlorine. A second sample of the compound…

A: Given: 1) A sample of a compound contains Silver with mass = 9.49 g 2) A sample of a compound…

Q: A balanced chemical equation contains the term "2Ba(OH)2⋅8H2O." How many atoms of each element does…

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Q: How many moles of aluminum are in an aluminum block that meausres 3.00cm x 3.00 cm x 5.00cm? The…

A: Density: It is a ratio of mass of an object to its volume. Its SI unit is g / cm3. It creases with…

Q: You have a beaker. The mass of the empty beaker is 5.6781 g. You transfer CuCl2 crystals to the…

A: Number of moles can be calculated by dividing mass by molar mass. Number of moles = Mass / Molar…

Q: 30. A sample of a compound containing only S and Cl contains 2.72g S and 6.04g Cl. Another sample of…

A: given data = a sample compound only containing S and Cl S = 2.72 g, Cl = 6.04 g another sample of…

Q: Number of atoms of C in 10 moles of C4H10 are:     240.88x10^23 24.09x10^23 4.15x10^23…

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Q: a. How many molecules of sulfur trioxide are present in 3.39 moles of this compound? molecules b.…

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Q: 1. How many moles are in each of the given samples? a) 2.50 mL of water (assume density of water is…

A: Note : As per our guidelines we are supposed to answer first 3 parts .please resubmit the other…

Q: What is the percent composition of oxygen in aluminum nitrate?     6.58%     67.60%     12.67%

A: Aluminium Nitrate is Al(NO3)3 Atomic mass of Al = 27 g mol-1 Atomic mass of N = 14 g mol-1 Atomic…

Q: One mole of pure hydrochloric acid, HCl, requires 100 g of 80% pure NaOH to neutralize. The mass of…

A: The neutralization reaction between HCl and NaOH is: NaOH+HCl→NaCl+H2O According to the above…

Q: A 2.00g strip of Mg is reacted with oxygen inside a flash bulb by pressing the shutter. The strip is…

A: Solution : Given, Mass of Magnesium(Mg)=2.00 g Mass of Magnesium oxide(MgO)=3.32 g The mass of…

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: An aspirin tablet contains 0.325g of C9H8O4. A) How many molecules of C9H8O4 does it contain? B)…

A: Given: Mass of C9H8O4 = 0.325 g.

Q: For items 1 and 2: 4NH3 + 302 6H2O + 2N2 1. What is the mole ratio of NH3 to H2O? 2. What is the…

A:

Q: In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are…

A: Answer:- C3H6(g)   +  4.5 O2(g)   -------> 3CO2(g)   +    3H2O(g) In this equation the…

Q: Phogene (COCl2) can be manufactured by mixing carbon monoxide with chlorine gas. CO + Cl2 → COCl2…

A: Amount of product formed calculation using stoichiometric coefficients of a balanced Chemical…

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.