Question 20 1) Calculate the molar mass of Ca3(PO4)2 2) What amount (moles) of compound is present in 1.00 g of Ca3(PO4)2 3) What's the mass of Ca3(PO4)2 in 5 moles? 4) What's the mass of phosphorus (P) in 5 moles of Ca3(PO4)2 5) How many molecules are present in 1.00 g of Ca3(P04)2 (Hint: calculate mole first, then use Avogadro's number)

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Q: QUESTION 14 How many moles of benzene C6H6 are present in 390 grams of benzene. 5 mol 4.3 mol 6.7…

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Q: Question 4 Calculate the mass (in grams) of 3-34x1024 atoms of Ag. Calculate the number of atoms of…

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Q: Calculate the number of atoms or molecules in each of the following: Help on Questions #22 #23 #24

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Also, Number of atoms…

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…

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Q: How many atoms are there in 15.0 grams of bromine (Br)?   Question 13 options:…

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Q: A compound has a molar mass of 44.01 g/mol and an empirical formula of CO2. What is the molecular…

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Q: 45 atoms of calcium weigh O 1804 amu O 1804 g 2.71 × 1025 amu 900 g 900 amu

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

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Q: Find the percentage of sulfur's in Epsom salt crystals (MgSO4. 7H2O)? a) sulfur b) water

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Q: 5) What is the mass in grams of 6.022 x 10 molecules of CO, ? A) 22 B) 66 C) 44 6) How many grams of…

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

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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…

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Q: If you have 4 moles of CH4 molecules, how many C atoms do you have? 16 4 moles 16 moles

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Q: The number of grams of 1.38 x 1022 molecules of C12H22011 is: 0.0229 g 7.84 g 342 g 2.29 g

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Q: 28) 8.42 x 1027 atoms of tin 29) 6.39 x 10¹8 atoms of sulfur 30) 5.99 x 1030 molecules of SiO₂

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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.