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Cola drinks are usually 0.0060 M with respect to H<sub>3</sub>PO<sub>4</sub>. How many moles of this acid are in a 296.5 mL drink?
Molar mass of H3PO4= 97.994 g/mol= 296.5/97.994= 3.026moles
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Determine the representative particles in each substance?
A.) 4.45 mol of C6H12O6
B.) 0.250 mol of KNO3
C.) 2.24 mol of H2
D.) 9.56 mol of Zn
A representative particle is the smallest unit of a substance that can be broken down without altering the composition. There are three types of particles: molecules, structural units(like ions) and...
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Determine the representative particles in each substance? A.) 4.45 mol of C6H12O6 B.) 0.250 mol of KNO3 C.) 2.24 mol of H2 D.) 9.56 mol of Zn
A. molecules of glucoseB. ions K+ and NO3-C. molecules of H2D. atoms of Zn
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<ol><li>10 mol of Zn react with 10 mol of HCl. Calculate the number of moles of H2 produced.</li></ol> (a) 5 mol (b) 10 mol (c) 20 mol (d) 2.5 mo
ANSWER SHOUD BE "a".EXPLANATION ......Zn reacts with HCl and form ZnCl2 and H2 .Balance Reaction is Zn + 2HCl ----- ZnCl2 + H2 .When 10 mol of Zn react with...
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Use the data to find another value for the enthalpy of buta-l , 3 —diene.
Bond energies Enthalpies of atomisation
C-H 413 KJ/mol C 715 KJ/mol
346 KJ/mol H 218 KJ/mol
610 KJ/mol
∆Hf = {Σ ∆H to turn elements into gaseous atoms -Σ ∆H to turn compound into gaseous atoms}4C(s) + 3H2(g) =CH2CHCHCH2(g)∆ Hf = {4x∆Hat [C] + 3 x E[H-H]) –...
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Which solution has the lowest pOH? 5.00x10-1 mol/L NH3 5.00x10-1 mol/L KOH 8.00x10-2 mol/L F- 8.00x10-2 mol/L Ca(OH)2 Chat started
First, we need to write the chemical equation. HCN --> H+ + CN-Next, make an ICE chart with the initial concentrations of [HCN] = 0.0620M and [H+] = [CN-] =...
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Calculate the [H3O+] of aqueous solution with the pH = 11.0.
Express your answer using two significant figures.
[H3O+] = ???
pH=-lg[H3O+] x=10-pH X = 10-11
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From an initial mix of: 2 mol Cl2, 1 mol Br2, 0.5 mol I2, 0.5 mol Cl−, 1 mol Br−, 2 mol I−; the total quantity of I2 present after all possible reactions occur is
0.5 mol I2 and 0.5 mol Cl- will not react with anything; 2 mol I- will react with one mol of Cl2 producing one mol of I2: 2I- + Cl2...
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What is the [H3O+] of a soft drink that has a pH of 4.50?
[H3O+] = [H+] + H2O[H3O+] - concentratiion H3O+ ions (mol/L) = concentration H+ ions(mol/L in water)pH = -lg[H+]lg[H+] = - 4.50[H+] = 3.16*10-5 mol/L
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