of fusion (D) high melting point (E) high heat of vaporization 3. Which of the following statements is TRUE? (A) Most gases are more soluble in liquids at higher temperatures. (B) In any solution‚ the solvent has to be liquid. (C) The solubility of a gas in a liquid is inversely proportional to the pressure. (D) If the heat of solution is negative for a solid in a liquid‚ then more solid will dissolve at lower temperatures. (E) All of these statements are false. 4. Commercial concentrated
Premium Chemical reaction Chemical kinetics Reaction rate
SEPARATION AND PURIFICATION OF ORGANIC COMPOUNDS AIMS: To isolate organic‚ inorganic and component from a given sample. To become acquainted with various separation methods. To examine the solubility behavior of the various compounds in a mixture using different solvents. INTRODUCTION A commonly used method of separating a mixture of organic compounds is known as liquid-liquid extraction. Most reactions of organic compounds require extraction
Premium Solubility Solvent Acid
In our lab‚ we were given the task of burning seven different salts and taking notes of what we observed. The different salts included Potassium chloride‚ Calcium chloride‚ Strontium chloride‚ Lithium chloride‚ Copper II chloride‚ Sodium Chloride‚ and Barium Chloride. Burning a pinch of each salt separately by holding a nichrome wire over a Bunsen burner‚ we found that each salt emitted a different color of light. For example‚ Potassium Chloride burnt a bright pink flame when burned‚ while Calcium
Premium Chemistry Color Light
Section (a) I will be analysing an electric toothbrush. The design aspects I will be focusing on are; Function Performance Market Aesthetics Ergonomics Economics Function Primary functions of a toothbrush are- to wash teeth clean better/easier than an ordinary toothbrush. Secondary functions are- Timer so it’s easy to estimate the right time of washing teeth. Battery indication so you know when to charge it before it dies‚ Changeable ends so more people can use the same toothbrush
Premium Oral hygiene Toothpaste Aesthetics
saltwater. Both can drown you but in completely difference ways. Drowning in saltwater is not as dangerous as it counterpart due to how easily you can recover from it. When you breathe in saltwater it goes in the lungs and sits there. Because the salt concentration of saltwater is really high compared to the cells in the lungs the water does not pass through and into the cells. The water is hypertonic so for the body to reach equilibrium with saltwater‚ water from the blood cells are sent out into
Premium Water Water pollution Drinking water
hydrated salt in order to determine the percentage of water inside of this hydrated salt. We heated up the salt in order to boil off the water‚ which allowed us to find the weight of the CuSO4 by itself. By comparing this final weight with the original weight and subtracting the difference‚ we were able to compile data about how much the weight of the hydrated salt decreased as the water gradually boiled away. In doing so‚ we were able to find the total weight of the water in the hydrated salt by subtracting
Premium Water Chemistry Molecule
also known as salt‚ common salt‚ table salt or halite‚ is an ionic compound with the formula NaCl‚ representing equal proportions of sodium and chlorine. Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms. As the major ingredient in edible salt‚ it is commonly used as a condiment and food preservative. /Salt is currently mass-produced by evaporation of seawater or brine from brine wells and salt lakes. Mining of
Premium Sodium chloride Water Melting point
pictures of courtship wherein the patriarchy is still present‚ and an example of this patriarchal view can be seen in N.V.M Gonzales’ short story‚ where the courtship is evident between the male protagonist and Aida. In N.V.M. Gonzales’ “The Bread of Salt”‚ the male protagonist and the way he views his own masculinity and Aida’s femininity‚ as also seen in the story’s literary details and setting‚ reflect a patriarchal picture of courtship where the female is chased and objectified. An analysis of the
Premium Gender role Gender Feminism
Identification of Unknown Organic Compound by Melting Point (M.P)‚ Boiling Point (B.P) and Infrared Spectroscopy Methods and Background The main objective of this lab is to identify the given unknown organic compounds with various methods. Identification of an unknown compound is important to perform through the process of melting point (M.P)‚ boiling point (B.P) and Infrared spectroscopy (I.R). Index of Hydrogen deficiency (IHD) and elemental analysis makes an experiment more efficient in
Premium Chemistry Hydrogen Temperature
Organic Chemistry II Laboratory (ABCT357) Although studying fundamental theories of chemistry in the class is important to understand the concept of chemistry‚ carrying out experiments to corroborate the theories is also important. It is very important for students to get used to experiments in order to speed up their experiments. Expt.1. Acetylation of α-D-glucopyranose Add slowly 2.5 g (0.014 mol) of powdered D-glucose in small portions (roughly in 7-10 portions and 5 min for each addition)
Premium Acetic acid Carboxylic acid Nuclear magnetic resonance