Molarity Study guides, Class notes & Summaries

Which of the following is the percent concentration of a solution (w/v) containing 300g of MgCl2 dissolved in 2.5L of distilled water? a. 12% b. 13% c. 24% d. 25% - Answer a. 12% Which of the following is the molarity of a solution containing 400g of HCl dissolved in 1.5 liters of distilled water? (gms of HCl = 36) a. 6.4M b. 6.3M c. 7.4M d. 7.8M - Answer c. 7.4M A 24-hour urine sample submitted to the laboratory for creatinine determination has a total volume of 1500mL. A 1:...

atomic number CORRECT ANSWER The same as the number of protons in the nucleus of an element; it is also the same as the number of electrons surrounding the nucleus of an element when it is neutrally charged. mass number CORRECT ANSWER The sum of an atom's neutrons and protons isotopes CORRECT ANSWER Atoms of an element with different numbers of neutrons Avogadro's number CORRECT ANSWER 6.022×10²³ particles per one mole Moles CORRECT ANSWER grams/molar mass Standard Temperatur...

CHEM 207 REVIEW EXAMS QUESTIONS AND ANSWERS Practice questions for the exam with solutions. For you to do well on the exam, please work on the questions before looking at the solutions. If you find an error, let me know so I can let everyone know. REMEMBER THE EXAM IS ON Monday, Sept 28th on Top Hat. The exam will have 20 questions and only one hour. Studying the lecture ppts and lecture questions would also be helpful. Lecture 1A questions: Density and stat analysis, Q and T tables, % Tole...

Semmelweis Entrance Exam Questions and Answers Already Passed Electron configuration for cations Subtract 1 from exponent of highest n-value orbital (ex. remove from 4s before 3d) Ag+ = [Kr]5s^1 4d^9 Electron configuration for anions Add 1 to closest orbital Cl- = [Ne]3s^2 3p^6 Atomic orbitals s, p, d, f Primary vs secondary structures of proteins Primary - AA chain (linked by peptide bonds) Secondary - stabilized by non-covalent bonds (alpha helices & beta sheets) Mo...

Exam 2: NUR155/ NUR 155 (Latest 2024/ 2025 Update) Foundations of Nursing Complete Guide| Questions and Verified Answers| 100% Correct | Grade A- Galen Q: Hypovolemia Fluid volume deficit (FVD) Q: Hypovolemia S/S Answer: confusion dark/low urine output dry mucous membranes(mouth, nose,eyes) poor skin turgor thirst changes in awareness/mental state ortho static hypotension Q: Hypervolemia Answer: Fluid volume excess (FVE) Q: Hypervolemia S/S Answe...

Final Certification for CHEM 1212 Exam 2 Q&A What is Molarity and the units for molarity? - CORRECT ANSWER-M=moles of solute/liters of solution, units are mol/liter What is Molality and the units for molality? - CORRECT ANSWER-m= moles of solute/moles of solvent, units are mol/kg What is Mass Percentage or Weight Percent and the units for mass percentage or weight percent? - CORRECT ANSWER-Mass %= (mass of solute/total mass of solution) x 100 What is Mole Fraction and the units for...

theory - Answer- statement on what is thought to be true independent variable - Answer- can be changed or altered dependent variable - Answer- response observed by changing the independent variable eukaryote cell - Answer- has a nuclear membrane prokaryote cell - Answer- no nuclear membrane cell - Answer- basic unit of life unicellular - Answer- prokaryotic multi-cellular - Answer- eukaryotic osmosis - Answer- process of water molecules moving down the concentration gradi...

molarity correct answers mol solute/L solution molality correct answers mol solute/kg solvent mole fraction correct answers mol solute/(mol solute + mol solvent) % by mass correct answers mass solute/mass solution X 100% % by volume correct answers volume solute/volume solution X 100% % mass to volume correct answers mass solute(g)/volume solution(mL) Gibbs Free Energy correct answers G=H-TS Hsolution correct answers Hsolute + Hsolvent + Hmix endothermic when Hendo correc...

Things to Memorize for IB Chem HL 100% Correct Percentage Yeild actual yield/theoretical yield x 100 Avogadro's Law for gases One mole of any gas occupies 22.7 L at STP Ideal Gas Law PV=nRT (n is equal to the number of moles of the substance and R is the gas constant 0.082 or 8.314) Molarity equation moles of solute/liters of solution Dilution M1V1=M2V2 Hydrogen Emission Spectrum Color lines indicate the wavelengths of light that are released Balmer series A set of spec...

ISBM - FALL EXAM 1 - INTRO & STATS ISSUES - HOMEOSTASIS & FLUID VOLUMES - PLASMA MEMBRANE - DIFFUSION, OSMOLARITY & CELL VOLUME REGULATION - REGULATION OF THIRST AND WATER CONSERVATION - PH, ACIDS, BASES AND BUFFERS - PH BALANCE - RENAL & RESPIRATORY SYSTEM ROLES