Moles in solution - Study guides, Revision notes & Summaries

sp3 - ANSWER-tetrahedral 109.5 4 single bonds for oxygen and nitrogen tetrahedral bent sp2 - ANSWER-trigonal planar 120 1 double 2 single for oxygen and nitrogen trigonal planar linear sp - ANSWER-linear 180 1 triple 1 single or 2 double formula for alkane - ANSWER-CnH(2n+2) a organic molecule that contains at least one multiple bond is said to be__________ - ANSWER-unsaturated boiling point - ANSWER-the molecule with the most carbons will having the highest b...

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...

past papers questions chemistry - November 2020 AS paper 1, 2017 paper 2 A level, paper 1 2019 A level Questions and Answers 100% Pass | Updated 2024 This question is about atomic structure.There is a general trend for an increase in ionisation energy across Period 3. Give one example of an element that deviates from this trend. Explain why this deviation occurs. - Correct Answer ️️ -Aluminium / Al(Outer) electron in (3)p orbital / sub-shell (level) (3p) higher in energy / slightly ...

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...

Ionic Character correct answersdifference between in electronegativity between two atoms cation correct answerspositively charged ions anion correct answersnegatively charged ions Which organic compound smells like fruit? correct answersesters - mostly found in fruits Compound correct answerssubstance containing two or more chemical elements held together by chemical bonds What type of reaction is the process of fermentation? correct answersexothermic (converting sugar into alcoho...

First Semester Study Guide AP Chem Buck Exam 196 Questions with Verified Answers Salts containing which of the following ions are generally insoluble in cold water? a. nitrate b. acetate c. phosphate d. potassium e. ammonium - CORRECT ANSWER C. Phosphate Which of the following changes alone would cause a decrease in the value of Keq for the reaction represented above? a. Decreasing the volume of the reaction vessel b. Adding a catalyst c. Increasing the volume of the reacti...

density formula -d = m/v m = mass v = volume temp conversions -K = C + 273 C = 5/9 (F - 32) F = (C x 9/5) + 32 average atomic mass formula -(mass A)(% abundance) + (mass B)(% abundance) molecular mass formula -(mass A)(# of atoms A) + (mass B)(# of atoms B) mass of element formula -(mass of element in sample / total mass of sample) * 100 molarity with moles formula -M = n/v M = molarity n = moles of solute v = liters of solution molarity with mass formula -(M)(m...

Chemistry Cumulative Questions and Answers Graded A+ Which sphere of the Earth system includes the cryosphere? Biosphere Lithosphere Atmosphere Hydrosphere Hydrosphere For which task is using moles most relevant? Calculating the density of a substance. Measuring the temperature change during a reaction. Determining the number of atoms in a container of liquid. Analyzing the color change in a solution. 2 Determining the number of atoms in a container of liquid. In t...

Honors Chemistry Semester 1 Final Review with Complete Solutions What is the term for a substance that speeds up a chemical reaction without being consumed? Catalyst What is the name of the number that represents the number of atoms in one mole of a substance? Avogadro’s Number What is the term for the amount of space an object or substance occupies? Volume What is the name of the process in which a liquid changes to a gas at temperatures below its boiling point? Evaporat...

DAT – Chemistry Written Exam Questions Correctly Answered. For the reaction below, which of the following sets of coefficients would balance the reaction? __HNO3 + __S → __H2SO4 + __NO2 + __H2O - CORRECT ANSWER 6,1,1,6,2 Which of the following interactions is the strongest? - CORRECT ANSWER Ionic Bonds What is the maximum number of electrons that the d-subshell can hold? - CORRECT ANSWER 10 Calcium chromate (CaCrO4) is a yellow solid with a Ksp of 7.1 x 10-4. Determine the ion...