Chem 161 - Study guides, Class notes & Summaries

What are the SI Base Units? length (meter); Mass (kilogram); time (seconds); temperature (kelvin); amount of a substance (mole); electric current (ampere); luminous intensity (candela) What’s the SI Base Unit for length? meter

What is a mole? number of atoms that has a mass equal to the AMU in grams What is Avogadro’s number? 6.022 x 10^23 atoms/mole What is wavelength? distance between each wave unit λ

What is ionic lattice? An ionic lattice is a long-range array of positive and negative ions, held together by electrostatic attraction What is ionic lattice measured in? kJ/mol

What are the four quantum values? n is the principal quantum number. It determines the main energy level. Values of n are 1,2,3,4,5,…… ℓ is the angular momentum quantum number. It determines the shape of the orbital Values of ℓ vary from 0 to n-1 mℓ is the magnetic quantum number. It determines the orientation of the orbital. Values of mℓ vary from -ℓ to +ℓ

CHEM 161 EXAM 2 2024/25; Questions and Answers 100% Solved actual yield the experimental quantity, in grams, of product obtained in a reaction. Avogadro’s number the number of particles (6.022 x 10^23) of a substance in 1 mol of that substance. By definition, Avogadro’s number is equal to the number of carbon-12 atoms in exactly 12.00 g of carbon-12. balanced

What is ionization energy? Ionization energy is defined as the energy required to remove an electron from a gaseous atom. What is the formula for ionization energy? X (g) + energy –> E+(g) + e

Chem 161 Final Exam Questions And Answers 100% Correct

Chem 161 Lecture 2 100% Correct Questions And Answers

An element belonging to the halogen family would be expected to have a ________ ionization energy and a ________ electron affinity. - large; large What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2np1? - 3+ If an automobile gets 24.5 miles to the gallon and the cost of gasoline is $2.75 a gallon, how much will it cost to drive 975 km? - 68.0 $ An s-block element in the 5th Period is - Sr The maximum number of electrons in any ORBITAL...

CHEM 161 Lecture 1 Questions And Answers 100% Correct