Freon is a trade name for a group of gaseous compounds once used as propellants in aerosol cans. Which has a higher percentage of chlorine: Freon-12 (CCl2F2) or Freon-141b (C2H3Cl2F)? Freon-12, because 59% of its atoms are chlorine. Freon-12, because it contains 58.63% Cl. Freon-141b, because 60% of its atoms are chlorine. More information is needed to answer this question. Freon-141b, because it contains 60.62% Cl.

Q: What is the percentage of hydrogen in C6H14? The molecular weight of C is 12.011 g/mol, of H 1.00794…

A: There are some steps to find percent of an element present in a compound. Those steps are - 1) find…

Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

A: Recall the reaction A2B3 + 3 C2D = A2D3 + 3 C2D Find molar mass of reactant and products  Molar mass…

Q: General Chemistry 4th Edition McQuarrie Rock Gallogly University Science Books presented by…

A: The compound butylated hydroxytoluene (BHT) contains carbon(C), Oxygen(O) and hydrogen(H).  Given,…

Q: Each molecule of vitamin B12 contains a single atom of cobalt and is 4.35% cobalt by mass. What is…

A:

Q: what mass of cerrusite PbCO3 (MM= 267.21g/mol) contains 110g of O

A:

Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

A:

Q: 4. If excess sulfuric acid reacts with 30.0 g of sodium chloride, how many grams of hydrochloric…

A: Given, Mass of sodium chloride = 30.0 g Mass of sulfuric acid = excess H2SO4 (aq) + 2 NaCl (aq)…

Q: 4. How many atoms of sulfur are in 10.18 mol of tetrathionate (S4O,2-) ion? O 2.451 x1025 atom O…

A: 1 mol of any substance contains avogadro number of atoms or ions. Avogadro's constant= 6.023× 10^ 23

Q: Number of atoms of C in 14 moles of CH10 are: O 337.23x10^23 O 24.09x10^23 O 84.31x10^23 O…

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Q: Cobalt (III) fluoride is reacted with sulfur tetrafluoride to form sulfur hexafluoride and cobalt…

A: Mass of sulfur hexafluoride (SF6) = 16.28 g  Mass of cobalt (III) fluoride (CoF3) = ?

Q: Ammonium perchlorate (NHCIO,) is the solid rocket fuel used by the U.S. Space Shuttle. It reacts…

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Q: Consider thereaction : 2PCl2 + PCl= PCl.  ..If you react:2 moles of Cl2 how many of PCl5 are…

A: The correct reaction can be given as

Q: Combustion analysis of 63.8 mg of a C. H, and O-containing compound produced 145.0 mg of CO2 and…

A: CO2 is the product which is containing C, C produced = 145.0 mg CO2 x (1 g/1000 mg) x (1 mole CO2 /…

Q: What is the percent by mass of carbon in ethylamine, C2H7N? Note the following atomic weights: H…

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Q: A sample is found to contain 0.650 mole of a chemical substance. a. How many atoms are present if…

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Q: How many moles of octane (C8H18) are in 1.5 g of octane? (Octane MW= 114 g/mol) and which describes…

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…

Q: For the following reaction: NaN3=Na+N2 if 45.0 g of NaN3 decomposed, how many grams of sodium, and…

A: The given balanced reaction is as follows, The given grams of NaN3 is converted into moles first.

Q: 2.40 moles of pyrophyllite, Al2Si4O10(OH)2  how many moles of Al

A: Given, pyrophyllite, Al2Si4O10(OH)2  moles = 2.40 we have to find the moles of aluminium.

Q: Given the following reaction,  I2O5(g) + CO(g) --> CO2 (g) + I2(g)  a) If 50 g of iodine(V) oxide…

A: An equation representing the reaction between I2O5 and CO that yields I2 and CO2, for which three…

Q: In the same amount of moles of Potassium Dichromate (7.2). How many atoms of Cr are there? a)8.67 x…

A:

Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

A: We have to find the theoretical yield

Q: 1) How many atoms does each molecule of H,SO, has? A) 8 B) 6 C) 7 2) A compound of carbon and…

A: we have to tell which option is correct from given choices of options by telling  number of atoms in…

Q: A sample of ethanol (C2H6O) contain 3.024 g of hydrogen. How many moles of carbon in the sample?…

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Q: A compound containing carbon, hydrogen, and oxygen was analyzed. The analysis revealed a composition…

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Q: A 10.68 g sample of compound that contains only carbon, hydrogen, and oxygen was analyzed through…

A:

Q: How many moles of NO2 in 92.0 g of NO2? Molar mass of (N) = 14.0 g/mol; Molar mass of (O) = 16.0…

A:

Q: How many hydrogen atoms are in 5.0 g of citric acid (CóHg87)? O 1.6 x 10²² Hydrogen atoms O 4.6 ×…

A: Mass of Citric Acid = 5.0 gMolar mass of Citric Acid = 192.124 g/moleMoles of Citric Acid = Mass of…

Q: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl₆(PO₄)₄(OH)₈･4 H₂O.…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: A compound contains 38.7% C, 9.7% H, and 51.6% O by mass. What is the empirical formula? O CHO O…

A: Empirical formula can be found out by finding out the no. of atoms of different elements present in…

Q: What mass of compound is present in 4.10 moles of each of the following compounds? a. b. Mass= Mass=…

A: molar mass of NH3 = 17.03 g/molmolar mass of N2H4 = 32.04 g/molmolar mass of (NH4)2Cr2O7 = 252.06…

Q: How many Chromium atoms are present in a 5.00 mole ?sample of Al2(Cr207)3 None of them x 1024 9.03 x…

A: We have given that 1 mole of Al2(Cr2O7)3 contain 6 mole of chromium  Avogadro's number is defined as…

Q: What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen and 48.68%…

A:

Q: What mass of AuCl3 (MW 303 g/mol) contains 5.0 x 1023 atoms of Cl? a) 760 g b) 0.83 g c) 120 g d) 28…

A:

Q: What mass of oxygen difluoride OF2, contains the same number of fluorine atoms as 5.20 g of…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Number of atoms of C in 6 moles of C,H10 are: O 24.09x10^23 O 36.13x10^23 O 2.49x10^23 O…

A:

Q: A 5.31 g sample of compound that contains only hydrogen and sulfur was combusted, and yielded 10.0 g…

A: Moles of hydrogen and sulfur from 10.0g of SO2 and 2.81g of H2O can be calculated as

Q: 4. How many atoms of oxygen are in 10.18 mol of tetrathionate (S40,2) ion? O 3.677 x10 atoms O 6.128…

A: This question is very simple example of mole concept. First thing to calculate the number of oxygen…

Q: 4. Consider the following reaction: I2O5 + CO(g) CO29) + I2(9) a. 85 grams of iodine (V) oxide,…

A: Balanced reaction is : I2O5 + 5CO ....> 5CO2 + I2 a) mass of I2O5 = 85g  Molar mass of I2O5 =…

Q: Be sure to answer all parts. The interhalogen compound CIF3 reacts with NH3 to produce three…

A: Molar mass of HF = 20.01 g/mol  Molar mass of N2= 14.01 g/mol  Molar mass of Cl2 = 70.9 g/mol

Q: mol AB-016 A student was given a sample of hydrated Na2CrO4 (molar mass of anhydrous Na2CrO4. 162.0…

A: Number of moles of anhydrous sample and water is calculated as above,

Q: Consider the following hypothetical equation.  A2B3 +  3 C2D --> A2D3 + 3 C2B OR A2 B3 + 3 C2 D…

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Q: KO2 + H2O = O2 + KOH   Given the reaction above, what mass of KO2 produces 235 grams of O2?

A: Recall the balanced reaction                  4KO2 + 2H2O=3O2 +4KOH     Molar mass of KO2 is 71.1…

Q: Which contains the greatest mass of oxygen?   0.75 mol of ethanol (2C H5 OH)   1.0 mol of water…

A: Which contains the greatest mass of oxygen?

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.