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: The use of freons is being phased out because of the damage these compounds do to the stratospheric…

A: a.

Q: A sample of limestone and other soil materials was heated, and the limestone decomposed to give…

A: Given -> CaCO3(s) -----> CaO(s) + CO2(g)  Weight of sample = 2.237 gm  Weight of CO2 formed =…

Q: a. How many ATOMS of boron are present in 7.41 grams of boron trichloride? 3.805x10^21 atoms of…

A: Molecule given = BCl3 1 molecule of BCl3 = 1×6.022 ×1023 Molar mass of BCl3 = 117.3 g/mol 117.3 g of…

Q: An electric current is passed through 60.0 mL of water (H2O). This converts the water into 53.33 g…

A: Given  Volume of water = 60 mL  Mass of Oxygen  = 53.33 gram Mass of hydrogen gas  = 6.67 gram…

Q: 1. Methanol can be produced  by the reaction between carbon monoxide and hydrogen. Suppose 68.5 kg…

A: Answer: This question is based on stoichiometry of the reaction where compounds always react in the…

Q: Cl2(g)+Al (s)=AlCl3 (s) Cl2 (g)= 70.90 g/mol Al (s)= 26.98 g/mol AlCl3 (s)= 133.33 g/mol a.…

A: Aluminium chloride can be made by the reaction of aluminium with chlorine as: MAl  =26.98g/mol MCl2…

Q: . A 67.0 g sample of a compound was found to contain 40.2 g of carbon, 3.00 g of hydrogen and 23.8 g…

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Q: 2. A 4.626 milligram sample of a hydrocarbon, upon combustion in a combustion analysis apparatus,…

A:

Q: Consider the reaction: NO + Br2 → NOBr For every 75 g NO, Find the mass of Br2 reacted.  Find the…

A:

Q: A student heated calcium carbonate (CaCO3) producing calcium oxide (CaO) and carbon dioxide (CO2).…

A: The Law of Conservation of Mass is that mass is neither created nor destroyed in chemical reactions.…

Q: An unknown compound comprised of osmium and chlorine is 40.11% osmium by mass. a. If you assume…

A: Hello. Since the question contains more than three sub-parts, the first three sub-parts shall be…

Q: Consider the incomplete combustion of methane, CH₁. CH4 (g) +2 0₂ (g) → CO₂ (g) + 2 H₂0 (1) (Ch. 2)…

A: Given -> Weight of CH4 = 16 gram  Weight of O2 = 64 gram

Q: An air conditioner compressor contains pure CClF3, also known as the refrigerant R-13. CClF3 has a…

A: We know that, density can be expressed as the mass per unit volume, i.e.…

Q: When 18.0 mL of a 3.75×10-4 M sodium hydroxide solution is combined with 15.0 mL of a 1.53×10-4 M…

A: The chemical equation for the reaction of sodium hydroxide solution zinc bromide solution is  2 NaOH…

Q: iron (II) phosphate Ca3(PO)2->Fe,N +COCNJ2+FePo4 1. How many grams of calcium phosphate must be used…

A: The stepwise solution is as follows -

Q: What is the mass in grams of each quantity of vitamin D (molar mass 384.7 g/mol), which is needed…

A: Vitamin D is a very important vitamin which is needed for the formation and maintenance of healthy…

Q: Copper wire with a mass of 2.196 grams reacted with excessive sulfur. And by burning the remaining…

A: The simplest whole number ratio of the atoms in the compounds is given by the empirical formula.

Q: What is the mass of oxygen atoms in 0.305 moles of Fe(CO)5 ?

A: 1 mol Fe(CO)5 contains 5 moles of oxygen atom. Mass of oxygen = number of moles of oxygen × molar…

Q: 1.Glucose is an important biological molecule with the molecular formula C₆H₁₂O₆. What is its…

A: 1.Glucose is an important biological molecule with the molecular formula is C₆H₁₂O₆. An empirical…

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: Calculate how many water molecules there are for 1000g of water, H2O. A. 3.34 x 1025 water…

A: Given : Mass of H2O = 1000 g

Q: 4. Consider the photosynthetic conversion of CO2 and H2O to form glucose, C6H12O6 and O2 A. Write…

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Q: a.) A compound's percent composition was discovered to be 63.5 percent silver, 8.2 percent nitrogen,…

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Q: The number of particles and amount, respectively, in 45.2 g of potassium nitrate is 2.69 x 10 22…

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Q: 29. For items 29 - 32, please refer to the following chemical equation:CuCi2 + 2 NaNO3 - Cu(NO3)2 -…

A: Consider the given information is as follows; Reaction:      CuCl2     +  2 NaNO3   →    CuNO32   +…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 60.9 g of oxygen. Calculate the mass of the…

A: Sample of trifluoroacetic acid molecular weight                          = (12× 2+ 1+ 3×19+ 16×2) g…

Q: Ethanol has a molecular formula C2H5OH. A sample of ethanol has a mass of 2.3 grams. The sample was…

A: Given: Mass of C2H5OH = 2.3 g. The balanced combustion reaction taking place is given by, =>…

Q: a. Calculate the theoretical yield of methanol. b. If 3.57 x 104 g of CH3OH is actually produced…

A:

Q: 6. A piece of silver wire has a diameter of 0.392 mm. If silver has a density of 10.5 g/cc, how long…

A: Diameter of silver wire = 0.392mmdensity of silver = 10.5g/cc Number of moles of silver = 0.0123

Q: The formula for boron trichloride is BCl3. A. How many molecules are in 9.31 grams of boron…

A: Molecular formula of Boron trichloride is BCl3. It has three Chlorine atom and one boron atom. Molar…

Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: We know that for 1 mole of any chemical compound/species,there are Avogadro's number of molecules…

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

A:

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.