Chem 1111 Study guides, Class notes & Summaries

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...

CHEM 1116 written exam update questions and answer 2024 Santa Monica College

physical vs. chemical change - Answer-physical- does not change the substance. change in matter but nor chemical composition chemical- substance is changed. energy is absorbed or released. one or more substances being used solid - Answer-often rigid with definite shape gas - Answer-fills container and is easily comressed liquid - Answer-flows and takes shape of container, has a op surface 2 types of mixtures - Answer-heterogeneous- not uniform through out mixture homogeneous- uniform th...

Calorimetry - Answer-science of measuring heat Calculate amount of energy released using E=mc(dT) - Answer-Energy released= (mass of water heated)x(specific heat of water)(temp. change) specific heat=1.0 cal/gC 1 Cal=1000 cal What is meant by small calorie "c" and food calories "C"? - Answer-"c" is a scientific calorie which is the energy required to rise the temp of 1 gram of water by 1C "C" is 1000 scientific calories-Food Calories When walking, an average person burns 0.453 Food...

What is the wavelength in meters of green light with a frequency of 5.75 × 1014 s−1? (a) 5.22 × 10−7 m (b) 1.92 × 106 m (c) 1.92 × 108 m (d) 1.73 × 1023 m - Answer-(a) 5.22 × 10−7 m What is the energy of a photon having a wavelength of 900 nm? (a) 3.33 × 1014 J (b) 2.21 × 10−19 J (c) 1.79 × 10−31 J (d) 5.96 × 10−40 J - Answer-(b) 2.21 × 10−19 J Which light has the highest energy? (a) 700 nm, red light (b) 575 nm, yellow light (c) 475 nm, blue light (d) 400 ...

CHEM 111 EXAM 4 COMPLETE QUESTIONS AND ANSWERS 2024

sig fig zeros - Answer-1. zeros at beginning NOT signif 2. zeros between ARE SIGNIF 3. zeros at end of number are signif if number contains a decimal point 3.489 x (5.67-2.3) - Answer-3.489 x 3.(3)7 11.75793 12 matter - Answer-composed of mass and must occupy space scales of matter - Answer-macroscopic, microscopic, particulate. scientists think on a particulate scale, observe macroscopically states of matter - Answer-1. change from solid to liquid to gas as temp increases 2. motion of...

Mass - Answer-kilogram (kg) length - Answer-meter (m) Time - Answer-Seconds (s) Temperature - Answer-Kelvin (K) Amount of substance - Answer-mole (mol) Electric Current - Answer-ampere (A) Luminous intensity - Answer-candela (cd) Mega - Answer-1,000,000 or 10^6 Kilo - Answer-1,000 or 10^3 Deci - Answer-0.1 or 10^-1 Centi - Answer-0.01 or 10^-2 Milli - Answer-0.001 or 10^-3 Gas - Answer-No fixed volume or shape conforms to the container it's in. Molecules relatively far apart, move ...

CHEM 111 A Cycle of Chemical Reactions of Copper Lab Report University Of Chicago

CHEM 1110 Exam 2 Study Guide with complete solutions 100%2023