As human beings, when we think of water, a few things that come to mind are that we can drink water, we can swim in water, and many other applications. We don’t often think about it, but just as much as we like using water for our everyday needs, water’s unique characteristics and properties are very important in the environment, internally in our bodies, and to the other organisms that also habitat the earth. Certain characteristics of water such as its high specific heat, its density in its liquid and solid state, and water’s high surface tension all help organisms function in their everyday lives. When thinking of water’s unique properties, we often don’t think about how important it is that water is less dense in its solid form, rather than its liquid form. In hydrogen bonding, when the temperature drops to zero degrees the molecules in ice separate in a structured form away from other molecules making ice around 10 percent less dense than water. It is very significant to the environment that ice is less dense than water because if it wasn’t, the sea creatures that live under a lake or pond that freezes over would die. But since ice can float, the water only freezes on the top allowing the organisms below to live in the liquid water. Another important characteristic of water is its high specific heat. The specific heat of something is how much energy is needed for one gram of a substance to change by its temperature by 1 degree. Water has a high specific heat of 4.18 joules. Water’s high specific heat can be attributed to the fact that H2O molecules have hydrogen bonds. These hydrogen bonds within a within a water molecule are very hard break. This is such a unique property of water, because if water was to release or gain a certain amount of energy, its specific heat will not drastically change compared to another substance with a lower specific heat. This characteristic of water is so important because it allows organisms who live underwater to live their lives normally, despite the changing temperatures outside. Because it takes a lot of heat energy to raise the temperature of a body of water, the marine life below can live regularly without suffering from water that is drastically too hot or too cold. Not only that, but it is important that water has a high specific heat to make sure our…
room which is fuelled by gas. This plant room is used to heat the hot water which is sent around the buildings on your site and into each individual flat. When it enters your flat the water passes through the Heat Interface Unit (HIU), which is the boiler like object that sits in your cupboard. The arrival temp is taken, which will be between 70-80C, the hot water is then used to heat the radiators & the hot water cylinder. Once the hot water has circulated your system it then leaves your apartment…
WATER FOR LIFE
Africa has so many problems and not much effort on the part of those affected to find solutions. The sub-Sahara Africa (where Li beria is located) is among the regions affected by diseases, ignorance and poverty. Hunger, unsafe drinking water, high illiteracy rate. Most of These problems maybe cause by poverty, high illiteracy rate, war among others.
This project is a small effort to provide clean water for about nine hundred to one thousand inhabitants in…
the ambient temperature and heat transfer coefficient of a substance remain constant during the cooling process (DESAI, 2008).
Temperature change is driven by the temperature difference between the object and the surrounding. Many factors would affect the rate of temperature change, such as the temperature gradient between the object and the surroundings, velocity of object’s movement and the presence of driving forces (The Concord Consortium, 2013). Usually, when heat transfers from a hotter object…
means leaving a school or group for practical reasons, necessities, or disillusionment with the system from which the individual in question leaves.
Most commonly, dropping out refers to a student quitting school before he or she graduates or avoiding entering a university or college. It cannot always be ascertained that a student has dropped out, as he or she may stop attending without terminating enrollment. It is estimated 1.2 million students annually drop out of high school in the United States…
Study Guide: Thermodynamics test
▪ What is specific heat?
▪ Be able to use the formulat E = sm
T to calculate the energy absorbed/released by a
substance as it cools down.
A chemical reaction is carried out in a calorimeter. The temperature of the solution
(water) increases from 21 to 27.5 deg C. If the mass of the solution is 100 g, and its
heat is 4.18 J/g deg C, what is the energy released by the reaction in Joules?
▪ Be able to calculate specific heat (c), given the change in temp…
High School to College
Going from high school to college can be a culture shock. Although they share some basic similarities, the differences between the two are profound. While both require pencils, paper, books, classrooms and teachers; the choices, responsibilities, locations and cost are differences that impact the student for the rest of his or her life.
The choices a student is responsible for while in high school are geared more toward their social standing, and not their education per…
ann0703@bellsout School 0f
ann0703@bellsout School of
ashley.clary@selm Selma Early
elmacityschools.org Selma High
elmacityschools.org Selma High
Step 1: Heat 4 cups of turkey broth, chicken broth or water--or a combination of broth and water--in a saucepan until hot but not boiling.
Step 2: Transfer the cooked turkey from the roasting pan and set it on a cutting board to rest. Remove as much grease or fat as possible from the pan using a spoon, ladle or gravy separator. Reserve ¼ cup fat.
Step 3: Place the roasting pan over two burners on the stove on medium heat. Deglaze the pan by adding ½ cup water or other liquid (wine…
IB Chemistry SL (8th Period)
Specific Heat of Copper Lab
Background Information and Variables:
This lab focuses on the Thermodynamic principle of Enthalpy (H), which is defined as
the internal energy of a system at a constant pressure. It is more commonly applied as DeltaH,
which is the change in both the energy of the system and the volume of its contents. Because in
most systems there is a chance for outside interference that may allow for the escape of heat
energy, the best method for…