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
CHM 3120L ANALYTICAL CHEMISTRY I LABORATORY REPORT EXPERIMENT: SPECTROPHOTOMETRIC DETERMINATION OF IRON IN DRINKING WATER Name: Steven Adrien Section: 3 Date Experiment Completed: Wednesday‚ July 17‚ 2013 1. Complete the following table Fe(II) stock solution | mass‚ g | 0.1756 | volume‚ mL | 500.0 | MW(Fe(NH4)2(SO4)2 x 6H2O)‚ g/mol | 392.14 | AW(Fe)‚ g/mol | 55.85 | conc. Fe(II)‚ ppm | 50.0 | Use Equation Editor to show how you calculated the concentration of Fe(II)
Free Chemistry
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
Microbiology Lab Report II Title: Determination of a Bacteriophage Titer Purpose: To determine the number of phage particles or plaque-forming units in a suspension of T4 bacteriophage. Materials: 18 24 hour broth culture of Escherichia coli B. 2 ml suspension of T4 bacteriophages with a titer of at least 10‚000 phages/ml 5 trypticase soy agar (TSA) plates. These should be warmed to 37c before use 5 tubes of soft agar (0.7% agar). Prior
Premium Escherichia coli Microbiology Agar plate
| | 1 | 0.2123 | 0.00 | 42.34 | 42.34 | 2 | 0.2195 | 0.00 | 47.24 | 47.24 | 3 | 0.2049 | 0.00 | 26.65 | 46.65 | After Boiling | 1 | | 31.52 | 32.22 | 0.70 | 2 | | 29.34 | 30.61 | 1.27 | 3 | | 30.61 | 31.52 | 0.91 | Week 2: Determination of Sodium Carbonate in the unknown via titrating using bromocresol indicator Sample number: SC 8 Table 2: Titration of the unknown using hydrochloric acid Trial | Mass of unknown (g) | Burette reading (before boiling) | Final Volume
Premium Titration Hydrochloric acid PH
Experiment 5 Gravimetric Determination of Sulfate Eisman E. Morales TA: Jackeline Pennywiit Chemistry 121 02/14/2011 Purpose: To determine the percent sulfate in a sample using a semimicro scale gravimetric procedure. Procedure: Refer to pages 41-42 of General Chemistry volume 1 Laboratory Experiments by Judith Casey and Robert Tatz‚ Hayden McNeil Publishing‚ 2010 Report Sheet See attached report sheet. Report Questions 1. Explain how your calculated value for percent
Premium Chemistry Solubility Water