CHEM

This document is a concise study guide on arterial blood gas (ABG) analysis, covering the purpose of ABG (assessing oxygenation, ventilation, and acid-base balance), common arterial puncture sites (radial, brachial, femoral), normal ABG values (pH 7.35–7.45, PaCO₂ 35–45 mmHg, HCO₃ 22–30 mEq/L, PaO₂ 72–104 mmHg, SaO₂ 95–100%), and interpretation of four primary acid-base disorders: respiratory acidosis (pH <7.35, PaCO₂ >45 mmHg – CO₂ accumulation), respiratory alkalo...

This document is a lab report for Portage Learning CHEM 104 Experiment 5 on buffers and pH resistance. Part 1 tests the effect of adding sodium acetate to water vs. pH 7 buffer (water pH increases due to acetate acting as a weak base; buffer pH remains stable). Part 2 tests the addition of HCl to water vs. buffer (water pH drops dramatically; buffer resists pH change). Parts 3–5 use lactic acid/sodium lactate buffers with varying acid/base ratios to demonstrate the Henderson-Hasselbalch equati...

This document is a lab report for Portage Learning CHEM 104 Experiment 7 on organic synthesis. Three syntheses are performed: (1) Synthesis of aspirin (acetylsalicylic acid) from salicylic acid and acetic anhydride with sulfuric acid catalyst – includes heating, water addition to hydrolyze excess anhydride, ice water precipitation, suction filtration, Fe³⁺ test (phenolic groups – salicylic acid gives deep purple, aspirin gives no color change), melting point determination (133.8°C), and ...

This document is a module exam for Portage Learning CHEM 104 (Module 5) covering organic chemistry functional groups, hydrocarbon types, and spectroscopy interpretation. Questions include identification of a C=C double bond, classification of an aromatic hydrocarbon, naming 1,4-dimethylcyclohexane, recognition of a carboxylic acid functional group, description of an ester containing a carbonyl (C=O) bond with an alkoxy group attached to the carbon, classification of the combustion reaction CH₃...

This document is a module exam for Portage Learning CHEM 104 (Module 3) covering solubility product (Ksp), entropy (ΔS), Gibbs free energy (ΔG), and spontaneity. Questions include calculation of molar solubility of BaF₂ (Ksp = 1.0 × 10⁻⁶ → s = 6.3 × 10⁻³ mol/L), calculation of Ksp of MnS from solubility (0.0001375 g/100 mL → Ksp = 2.496 × 10⁻¹⁰), precipitation prediction for PbI₂ (mixing 1.0 × 10⁻⁴ M Pb(NO₃)₂ with 1.0 × 10⁻³ M NaI; Qc = 1.0 × 10⁻¹⁰, Ks...

This document is a problem set for Portage Learning CHEM 104 Module 5 covering various spectroscopy techniques used in organic chemistry and materials analysis. Questions include identification of spectroscopic methods: SEM/EDS for qualitative elemental analysis, mass spectroscopy for accurate molecular weight, infrared (IR) spectroscopy for functional groups, and nuclear magnetic resonance (NMR) spectroscopy for detailed information about hydrogen atoms. Students are asked to match spectra to t...

The CHEM 120 Week 3 Lab Report – Introduction to General, Organic, and Biological Chemistry is a professionally structured academic resource created to guide students in preparing high-quality laboratory reports for university-level chemistry courses. This A+ graded lab report example demonstrates how to properly document laboratory experiments, analyze chemical data, and present scientific conclusions using the format commonly required in college chemistry programs. Laboratory work is an e...

The CHEM 120 Week 3 Lab Report – Introduction to General, Organic, and Biological Chemistry is a professionally structured academic resource created to guide students in preparing high-quality laboratory reports for university-level chemistry courses. This A+ graded lab report example demonstrates how to properly document laboratory experiments, analyze chemical data, and present scientific conclusions using the format commonly required in college chemistry programs. Laboratory work is an e...

The CHEM 120 Week 5 Lab Report – Introduction to General, Organic, and Biological Chemistry is a professionally structured academic resource designed to help university students understand how to prepare a high-quality laboratory report. This A graded submission example demonstrates the correct format, organization, and analytical approach required for completing chemistry lab assignments at the college level. Laboratory experiments are a critical component of introductory chemistry courses...

The CHEM 120 Week 5 Lab Report – Introduction to General, Organic, and Biological Chemistry is a professionally structured academic resource designed to help university students understand how to prepare a high-quality laboratory report. This A graded submission example demonstrates the correct format, organization, and analytical approach required for completing chemistry lab assignments at the college level. Laboratory experiments are a critical component of introductory chemistry courses...