H3po4 - Study guides, Revision notes & Summaries
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CHEM120 Week 8: Exam 3 (Units 5, 6, and 7) – With 100% Correct Answers- Download To Score An A+
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CHEM120 Week 8: Exam 3 (Units 5, 6, and 7) – With 100% Correct Answers- Download To Score An A+ 1. Question: (TCO 7) (a, 5 pts) Given that the molar mass of H3PO4 is 97.994 grams, determine t he number of grams of H3PO4 needed to prepare 0.25L of a 0.2M H3PO4 solution. Show your work. (b, 5 pts) What volume, in Liters, of a 0.2 M H3PO4 solution can be prepared by diluting 50 mL of a 5M H3PO4 solution? Show your work. (Pts. : 10) A. Molarity = moles of solute/liters of solution moles of solute ...
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Test Bank For Chemistry The Molecular Science 5th Edition by John W. Moore
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Chapter 3: Chemical Reactions 
1. Which of the following cannot be determined from a balanced chemical equation? 
a. b. c. d. e. 
ANSWER: POINTS: TOPICS: OTHER: 
The number of molecules of reactants and products. The number of atoms of each element reacting. 
The number of moles of reactants and products. The relative mass of each reactant and product. Whether the reaction will proceed as written. 
e 
1 
3.1 Chemical Equations Comprehension 
2. In the reaction given below, if 12 moles of aluminu...
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CHEMISTRY SEMESTER B FINAL EXAM REVIEW EXAM QUESTIONS WITH 100% CORRECT ANSWERSS
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What atoms follow the Duet role? 
Li and Na 
 
 
 
What type of bonding takes place between N and F? 
covalent 
 
 
 
 
Brainpower 
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How many electrons is an octet? 
8 
 
 
 
To draw the Lewis Structure of the polyatomic ion CIO2, you would have to ________ those in the structures of Cl, O, O and O. 
add one electron to 
 
 
 
The correct Lewis structure for a molecule of the compound ...
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Straighterline CHEM101 General Chemistry I Graded Exam 4 (New Version June 2024)
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Question 1 
Correct 
5.00 points out 
of 5.00 
According to which scientific law does the entropy of the universe increase in spontaneous 
processes and remain unchanged in equilibrium processes? 
Select one: 
A. 1st universal law 
B. 1st law of entropy 
C. 2nd law of thermodynamics 
D. 3rd law of thermodynamics 
E. 1st law of thermodynamics 
Straighterline CHEM101 General Chemistry I Graded Exam 4 (New Version June 2024) 
We are a team of experts offering class attendance for all Straighterline...
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Biochem ACS UPDATED Exams Questions and CORRECT Answers
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Henderson-Hasselbalch equation - pH = pKa + log [A-]/[HA] 
pka of acetic acid - 4.76 
pka of H3PO4 - 2, 7, 12 
pka of the amino terminal of AA - 10 
pka of the carboxyl terminal of AA - 2 
what are the charged amino acids - arg
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OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 2: Acid-base titration Exam Questions and Mark Scheme
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OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 2: Acid-base titration Exam Questions and Mark SchemeThe equation for the reaction of aqueous phosphoric(V) acid, H3PO4, with aqueous sodium 
hydroxide, NaOH(aq) is shown below. 
H3PO4(aq) + 3NaOH(aq) → Na3PO4(aq) + 3H2O(l) 
25.0 cm3 of a 0.200 mol dm−3 H3PO4(aq) is titrated with 0.600 mol dm−3 NaOH(aq). 
Which statement is correct? 
A. The end point occurs when 25.00 cm3 of NaOH(aq) has been added. 
B. The end point occurs when 75.00 c...
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CHEM 120 WEEK 8 Final Exam 2023 with correct answers Already graded A+
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CHEM 120 WEEK 8 Final Exam 2023 
with correct answers Already graded 
A+ 
molarity = moles solute / liters solution 
0.25 M = moles NaOH / 0.035 L 
moles NaOH = 0.00875 moles NaOH 
1. (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of 
the HCl solution is (show your work): (Points : 5) 
2. (TCO 1) How many mL are in 3.5 pints? Show your work. (Points : 5) 
3.5 pints is equivalent to 1656.116 
1 pint = 473.176 ml 
3.5 pints* 473.176mL = 1656.116mL 
3. (TC...
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PORTAGE BIOCHEM MODULE 6 EXAM 2024 WITH 100% CORRECT ANSWERS
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Most common nucleic acids - correct answer Deoxyribonucleic acid (DNA) 
Ribonucleic acid (RNA) 
 
Nucleic acid monomers - correct answer nucleotides 
 
DNA function - correct answer stores genetic info encoding primary sequence of proteins 
 
RNA function - correct answer makes proteins from info in DNA 
 
Nucleotide structure - correct answer base + monosaccharide + phosphoric acid (H3PO4) 
 
Site of phosphoric acid bonding to sugar - correct answer Carbon 5 
 
Composition of bases - correct an...
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OCR A Level Organic & Organic synthesis Chemistry Exam 2024 with Guaranteed Accurate Answers
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Alkene + hydrogen /nickel catalyst/423K= - correct answer alkane 
 
Alkene + bromine /room temperature= - correct answer dihaloalkane 
 
Alkene + HCl(g/aq) /room temperature= - correct answer haloalkane (mixed products) 
 
Alkene + H2O(g) /H3PO4= - correct answer alcohol (mixed products) 
 
Primary alcohol + 2[O] /excess K2Cr2O7/H2SO4/reflux= - correct answer carboxylic acid 
 
Primary alcohol + [O] /K2Cr2O7/H2SO4/distil= - correct answer aldehyde 
 
Secondary alcohol + [O] /K2Cr2O7/H2SO4/reflux...
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CHEM 210 Final Test Questions with Correct Answers
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CHEM 210 Final Test Questions with Correct Answers 
Calculate volume 0.2 NaOH and # equivalence points for titration of 25mL 0.1 H3PO4 - Answer-2 eq points- 
0.1M x 0.025L = 0.0025 mol H3PO4 
mol H3PO4 = mol added NaOH 
0.0025 mol NaOH / 0.2 M = 0.0125 L NaOH added 
 
Calculate equivalence point volumes for titration of 25.00 mL of 0.060 M HCl and 0.10 M H3PO4 with 0.075 M NaOH - Answer-exp 1 calculations 
find moles total acid, 
 
response factor - Answer-Coefficient that makes the relative res...
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