Regents Chemistry Quarter 1 Midterm Review 1. The percent by mass of oxygen in Na2SO4 (formula mass = 142) is closest to 1) 11% 3) 45% 2) 22% 4) 64% 2. Given the unbalanced equation: __Al(s) + __O2(g) → __Al2O3(s) 3. 4. 5. 6. 7. balance the equation using smallest whole number coefficients. The percent by mass of aluminum in Al2O3 is approximately 1) 18.9 3) 47.1 2) 35.4 4) 52.9 What is the approximate percent composition by mass of CaBr2 (formula mass = 200)
Premium Water Ideal gas law Melting point
Discussion The purpose of the Density Lab was to determine the identity of four unknown solids and two unknown liquids by calculating their densities and comparing them to a density chart‚ taking into account error analysis and finally classifying the substances. In order to calculate this density‚ we first found the mass of the container that was to be holding the substances. We then found the volume of the substance‚ and lastly determined the mass of the container and substance. We subtracted
Premium Liquid Density Volume
Chemistry 3373F Lab Manual 2008 Modified 11/07 Table of Contents Chem 3373 Laboratory Schedule for Fall 2008.............................................................................2 The Benzoin Condensation of Benzaldehyde ..............................................................................3 Synthesis of Dilantin and Related Compounds (two weeks).........................................................6 Synthesis of an Alkaloid: Pseudopelletierine (two weeks) .............
Premium Hydrochloric acid Sulfuric acid Acetic acid
object is a figure that has both width and height. Today in physics a two dimensional lab was done to decide the distance of an ice cream cone shooter. To do this‚ the formula (d=Ví t + (1/2) at^2) has to be implemented. I decided to make my Y equal to one meter‚ so my calculations would be easy to get. I knew my acceleration for Y was -9.8‚ the velocity initial for Y was zero‚ and the time it will take for the ice cream to reach zero is .452. For X I know that time is also .452‚ and that the acceleration
Premium Real number Pythagorean theorem Velocity
textbook in 1789 on chemistry in it he introduced the Law of Conservation. He founded the 3 types of matter (solid‚ liquid‚ and gas). Along with this he also established the metric system. Lavoisier also made a lot of enemies because he had disproved various old theories. In experiment 2.1 we wanted to know if the mass of salt will
Premium Chemistry Mass Hydrogen
He a lt h 0 3 2 3 Fire 0 Re a c t iv it y 2 P e rs o n a l P ro t e c t io n Material Safety Data Sheet Sulfuric acid MSDS Section 1: Chemical Product and Company Identification Product Name: Sulfuric acid Contact Information: Catalog Codes: SLS2539‚ SLS1741‚ SLS3166‚ SLS2371‚ SLS3793 CAS#: 7664-93-9 Sciencelab.com‚ Inc. 14025 Smith Rd. Houston‚ Texas 77396 RTECS: WS5600000 US Sales: 1-800-901-7247 International Sales: 1-281-441-4400 TSCA: TSCA
Premium Sulfuric acid Oxygen Chlorine
Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea
Premium Chemistry Caffeine Tea
of the Goa ice cream market. A BRIEF HISTORY OF ICE CREAM BUSINESS IN GOA HOME Ice creams have been consumed in Goa in the form of deserts as early as the late sixties. The market was then limited to the urban rich. Popular restaurants and hotels made their own ice cream recipes. House hold consumption was limited to self made ice creams at home. Yummy started its operations in Goa in the early seventies. As a manufacturer it was the first to enter the ice cream market. Dollops
Premium Goa Milk Ice cream
out what are the advantages of cookies that is filled with ice cream specifically in Bacolod City. Our study focused on advantages of cookies filled with ice cream. We choose Bacolod City people as our participants because related indication shows that many business creations are in the place that most people are present. We will present this research paper in order for us to know the taste and effect of cookies that is filled with ice cream in the consumption of people‚ reasons for eating‚ effects
Premium Milk Partnership Taste
Indian Scenario – dairy industry • India has one of the largest livestock population in the world. Fifty percent of the buffaloes and twenty percent of the cattle in the world are found in India‚ most of which are milk cows and buffaloes. • Dairy development in India has been acknowledged the world over as one of modern India’s most successful developmental programme. Today‚ India is the largest milk producing country in the world. • Milk and milk products is rated as one
Premium Milk