Question 9 Composition 2. How many moles of sulfur would be present in 5.6 mol of Na2 SO4? 22 moles 2.8 moles 11 moles 5.6 moles Question 10 EMF2. A compound has a molecular formula of C6H12O3. Determine its empirical formula. OC₂H30 OC₂H4O OCHO OC3H6O

Q: How many molecules are in sample? 85.26 g CCl4

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Q: convert 5 moles of K to molecules of K

A: 1 mol = 6.02 x 1023 molecules 1 mol = molar mass

Q: The molar mass of a compound is 92g/mol. Analysis of a sample of the compound indicates that it…

A: Determination of empirical formula  The percentage composition of elements present in given compound…

Q: Exactly 1 mole of Mg2ClO contains how many moles of Mg, Cl, and O

A: 1 molecule of Mg2ClO contains 2 Mg atoms  1 Cl atom  1 O atom

Q: The approximate mass of one mole of ammonium carbonate (NH4)2CO3 is O A. 96.0 g O B. 42.0 g OC.72.0…

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Q: How many molecules of N204 are in 76.3 g N2O4? The molar mass of N2O4 is 92.02 g/mol. O 7.26 1023…

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Q: How many atoms of oxygen are contained in 47.6 g of Al 2(CO 3) 3? O 3.68 x 1023 o atoms 1.10 x 1024…

A: Note : As per our guidelines , we are supposed to answer only first question ( question 25) ,Kindly…

Q: Please help

A: The balanced chemical equation between magnesium and hydrogen chloride is given by

Q: Calculate the mass, in grams, for each of the following. 1.70 moles of Na 3.60 moles of Ca 0.110…

A: Number of moles is defined as ratio of mass of substance to the molar mass of it. Number of…

Q: Complete the table: Show work. don't give Handwritten answer Compound Mass Moles Number of molecules…

A: Given,The table:    compound         Mass           moles    Number of molecules         H2O…

Q: Ammonia, NH3, is a pungent inorganic chemical with many industrial and household uses. How many…

A: If mass and molecular weight given than mole eaisly determine

Q: Calculate the number of moles of Fe in 43.6 grams of Fe.

A: Given :- mass of Fe = 43.6 g  To be calculated :- number of moles of Fe

Q: How many moles of Ca atoms are in 613.29 g of Ca? Group of answer choices 6.53 x 10-2 mol 15.30 mol…

A:

Q: Sue adds 1.78 grams of sugar, C12H22O11 to her coffee every morning before work. How many moles are…

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: How many atoms are in 5.00 moles of O? O O 23 5.02 x 10 atoms 24 1.51 x 10 atoms O 3.01 × 1023 atoms…

A: The concept of the Avogardo number is used here. Because the moles of O are given and we are asked…

Q: QUESTION 18 Analysis of a hydrocarbon shows it to be 94.1% oxygen and 5.9% hydrogen. Determine the…

A: As per the guidelines we are supposed to answer the first question so solve remaining questions…

Q: 20. How many grams are in 1.18 x 1021 HF molecules? H = 1.008 g/mole and F=19.00 g/mole 1.01 g 0.992…

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Q: None

A: Thank you.

Q: QUESTION 28 Determine the empirical formula for a compound that is 70.79% carbon, 8.91% hydrogen,…

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Q: QUESTION 28 For a 8.73 g sample of ethanol (shown in the figure), what is the percent composition by…

A: Given, Chemical formula of ethanol= C2H5OH Molar mass of ethanol= 46.08 g/mol

Q: What is the mass in grams of carbon dioxide that would be required to react with 68.1 g of LIOH in…

A: Given,

Q: Pheromones are a special type of compound secreted by the females of many insect species to attract…

A: Molecular formula of pheromone: C19H38O mass of pheromone (C19H38O) = 1.3 × 10-12 g Number of…

Q: from the previous question convert 3 moles of H2 to molecules of H O 3 molecules of H2 O 1.806X1024…

A: Correct option is B. One mole consists of NA number of molecules. 1mole = NA number of molecules…

Q: Question 15 Calculate the molar mass of a compound if 0.457 mole of it has a mass of 430.0 g. 0.941…

A: A question based on mole concept. Number of moles and mass of a substance are given that are to be…

Q: QUESTION 6 The number of molecules of 2.53 g C7H6O3 is: 1.10x1022 molecules 138 molecules 3.04x10 26…

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Q: Examine the pie graph below. What is the molar mass of compound X? Mass Contributions to 3.0 mol of…

A: In the given pie chart: The total mass of the various elements in the compound X must be calculated…

Q: Which compound contains the highest percent by mass of hydrogen? Group of answer choices HCl H2O…

A: Water (H2O) has the highest percent mass of hydrogen.

Q: A mole of the water is: 12.0000 g H2O one H20 molecule O 6.02 x 1023 g H2O 6.02 × 1023 H20 molecules…

A:

Q: How many molecules of water, H2O, are present in 75.0 g of H2O?     A. 4.17 molecules     B.…

A: A multiple choice question about mole concept, which is to be accomplished.

Q: The molar mass of calcium phosphate, Ca3(PO4)2 is: Group of answer choices 278.18 g/mol 215.21 g/mol…

A: Molar mass of a compound is the mass of 1 mole of the compound.It is calculated by the total mass in…

Q: Convert 17.0 g of H2O2 to moles 2 0.500 578 500 none of the above

A:

Q: QUESTION 1 Calculate the molar mass of carbonic acid (H2CO3). There may be slight differences…

A: Calculation of the molar mass of carbonic acid is given below.

Q: Select all the compounds that have an empirical formula of CH which has an empirical formula mass of…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Calculate how many moles there are in 4.78 g of Ca3(PO4)2.

A: Given :- mass of Ca3(PO4)2 = 4.78 g  To calculate :- number of moles of Ca3(PO4)2

Q: How many molecules are in 0.25 mole of O2? A) 12 × 1023 B) 6.0 × 1023 C) 3.0 × 1023 D) 1.5 × 102

A: One mole of a substance is equal to 6.022 × 1023 molecules.  Here we have to calculate molecules for…

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.