12. Calculate the sodium ion concentration when 70.0 mL of 3.0 M sodium carbonate is added to 100.0 mL of 1.0 M sodium bicarbonate (NaHCO3). Assume volumes are additive. Total volume = 70.0 mL + 100.0 mL = 170.0 mL %3D Moles from Sodium Carbonate (Na2CO3): 0.42 moles Na* Moles from Sodium Bicarbonate (NaHCO3): 0.10 moles Na* Total Nat concentration (0.42 moles + 0.10 moles) /0.170 L = 3.1 M %3D

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Q: Suppose you had 20 moles of O2 and enough H2, how many moles of H2O could you make?

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Q: a. What mass is represented by 0.0146 mol of C3H7OH (2-propanol, rubbing alcohol)? Mass %3D b. What…

A: a). Given: The moles of C3H7OH = 0.0146 mol. The molar mass of C3H7OH = 60.09 g/mol.

Q: How many moles of calcium are in 0.500g of calcium?

A: Given  Mass of Calcium=0.500 g We need to calculate the moles of Calcium.

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Q: Part B Calculate the number of CO2 molecules in 1.19x102 mole of CO2. Express your answer using…

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Q: How many grams of KCIO, are needed to form 23.1 g of O,? 2 KCIO, (s) → 2 KCI(s) + 30,(g)

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Q: 6.0 g of C mixed with 2.1g of H2 how many grams of CH4 is produced,

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Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

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Q: What is the mass in grams for 0.198 mole mercury(III) bromide?  Two decimals 0.749 mol calcium…

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Q: determine the quantity of moles in 4.21 x 1023 molecules of CaCl2. List the steps clearly. Use…

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Q: In a 250 mL can of red bull, there are 80.0 mg of caffeine, how many moles of caffeine is that?

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Q: [References] 2. The current value of pure gold on the commercial market is $35,548.44 per kg. At…

A: Given, Commercial market value = $35,548.44 per kg Moles of gold(ll)  chloride = 0.4680 mol

Q: How many grams of Cl are in 255 g CaCl, ?

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Q: How many moles are in 15 g Li?

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Q: 2.75g lithium phosphate to moles

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Q: How many atoms are in the 156 mL of ethanol? (density = 0.79 g/mL) (Molar mass: 46.07 g/mol)…

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Q: A student weighs 1.00 grams of CuSO, on a balance. After heating, the compound weighed 0.638 grams.…

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Q: If the student used 3.103 g of MoOs, how many moles of MoO3 were present?

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Q: The number of H atoms in 10.0 moles of NH 3 (subscript)

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Q: Hi, for the No. of Moles = given mass/molar mass why would you multiply the given mass by 1000?

A: A millimole is one-thousandth of a mole. Mathematical representation is mmol is equal to mol/1000.

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Q: (a) Determine the mass in grams of 4.23 moles of glucose (C,H1206). g CH1206 (b) Determine the…

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Q: What is the mass of 9.71 mol of hydrogen gas? (Molar mass 2.02g/mol

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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.