Thermodynamics

When sealcoating professionals plan a job, they must consider the weather. Unfavorable weather conditions can cause a sealcoating project to fail; depending on the specific condition, the sealant may not dry properly, bond to the pavement or harden as it should. There are four particular weather conditions that are of concern to sealcoating professionals. Some of these conditions are sufficient to spoil a job on their own, but at times, a single unfavorable condition might not cause a problem…

This Density of Copper lab was an experiment, which helped to show how to calculate the density of copper while comparing the results of the density of water. While doing this experiment we had to remember the density of water, which is 1g/cm3. However, before trying to find the density we needed to make sure we had the mass and volume. We were given two ways to help find the density of copper and a beaker. I had to first measure the mass of the copper by picking it up and gently placing it in…

The propylene glycol is considered to be one of the common organic compounds which can be used in many life applications. It can be used in antifreeze, pharmaceuticals and many applications as well. It can be produced by hydrolysis of propylene oxide that is accelerated by the catalysis of base or acid. The goal of the experiment is to produce propylene glycol using water and propylene glycol as a reactant to synthesis propylene glycol. The purpose of doing this experiment is to converge and…

Jessica Vandeventer April 13, 2016 Energy Comparison of Fuels Purpose/Question- The Purpose of the lab is to see a comparison of fuels using a home made calorimeter. Hypothesis– The burner fuel is going to be a better source of fuel than the tea candle. Data Tables/ Graphs – Data Table 1. Mass and Density of Distilled Water. Mass of 10.0 mL of distilled water (g) Density of water (g/mL) 9.2g .92g/mL Data Table 2. Calorimetric Data. Fuel Source: Initial mass of fuel (g) Final mass of fuel (g)…

Human beings (endothermic homeotherms) maintain their core body temperature around 37°C (98.6° F) by homeostasis in response to changes in the surrounding temperatures and do so through conduction, convection, radiation and evaporation. The hypothalamus of the brain, kidneys and liver are the organs that help control homeostasis and it is thermoregulation that plays a vital role in homeostasis for the stability of our body temperature. Homeostasis, keeping the balance: An important role in…

The fabrics that will be put to a test are cotton, linen, silk, polyester, and a fabric with fire retardant. These fabrics will be treated in two separate ways. The experimental group and the control group. The experimental group will be treated with the fabrics softener while the control group will be treated without fabric softeners. Each of the fabric will then be lit up with fire vertically to the fire apparatus for 2 seconds. The fabric would be burned for an additional 3 seconds more.…

Melting point is the technique that disrupts the IMAF’s and forces the molecule to break by adding thermal energy to increase kinetic energy to the compound. When melting the unknown the interactions within the IMAF’s of the molecule are decreasing causing a disruption within the structure of the lattices. Determining the melting point of Unknown 105 A helps narrow down the possible compound that it can be, by the given melting point range. The narrower the range represents the relative purity…

• West: Assessment of CCI of various stopper, vial, and stopper blowback feature combinations. Samples with air headspace stored in nitrogen environment for four weeks: 5 of 240 samples showed evidence of a leak (drop in oxygen concentration between 1.3% and 3.4% atm). Results used by West for marketing poster. CCIT, Dry Ice • BioMarin: 130 glass vials with liquid (diluent) stored for two weeks on dry ice. Correction of total pressure measurement for carbon dioxide ingress into positive…

Weather Instruments are basically tools that measure the state of the atmosphere at a given time. Some of the earliest instruments were made very simply but more scientifically accurate instruments weren’t made until the 1800’s. For example, weather vanes were simply used to sense the direction of the wind. In the 1800’s scientist were more curious about what goes on in the upper earth so they started making detailed instruments. Thermometer A thermometer is an instrument that measures…

Common Causes Of Woburn Heating Problems Heating in Woburn is a necessity. That is why you should call a professional as soon as you notice any problems. A lack of maintenance is one of the most common causes of Woburn heating problems. Routine maintenance is important because it helps your unit run smoothly and more efficiently. A dirty air filter can also lead to Woburn heating problems. A dirty air filter can make it difficult for the air to circulate, which forces the unit to work harder.…