Convection is another method of heat transfer. This occurs when heat is transported through a large movement of heated molecules. The temperature of a liquid is relative to its density and this is when convection occurs. Cooler rocks higher in the mantle are denser than the hotter rocks below them and this is where gravity forces the colder rocks down, as they are heavier. Convection dominates the thermal conditions in the areas where large amounts of fluids, mostly being molten rocks, exist, and therefore it controls the transport of heat from the mantle and the fluid outer core.
For instance it takes much longer more energy to raise 1 gr. of water 1 than it does 1 gr. of silver. The equation of energy required is given as: Heat energy required (Joules) = (Mass of object) (Specific Heat)(Change in T) Or, as many book list it: Which says that the change in thermal heat energy going into an object shows up as an increase in temperature, .We have to be careful because the mass of the object we are heating is important as well. The term Cp is the specific heat of the material (at constant atmospheric pressure).
For example iron reacts to oxygen causing iron oxide to occur. Furthermore, some rocks contain iron in them, which allows the rocks to weather at a fast rate since they break apart easily. On the other hand, quartz is a mineral that’s is considered to be stable. Thus, the minerals that make up a rock has a great impact as to how quickly or slowly a rock will be mechanically or chemically weathered. Just like the characteristic of a rock, climate also plays a role in the rate in which a rock will break down.
Because the rate of reaction refers to how quickly the reactants are used up or how quickly the products are formed, one method is to measure the volume of gas given off, the more gas given off per time interval results faster reactions.Question: Will the changes in substrate concentration affect the rate of anaerobic reaction? Why or why not? What are the independent variable and dependent variable in this lab activity? What are some other controlled variables? Hypothesis: If substrate concentrations are changed, then as the concentration increase, the rate of anaerobic reaction will also increase, because the increase of the reactant concentration means there are more reactant particles, and there is a greater chance for these particles to collide and let reaction happen.
For this experiment, when the temperature increases, collision between the particles also increases. Hence, the rate of reaction increases with increasing concentration. It was also observed that the more crowded the molecules are, the more likely they are to collide and react with one another. In addition, temperature usually has a major effect on the rate of a chemical reaction. Molecules at higher temperature have more thermal energy.
The first factor that must be considered is the viscosity of the magma. This can determine how powerful an eruption is and what shape the volcano eventually becomes. Viscosity can be affected by three main factors, firstly, the higher the temperature, the lower the density of the magma, causing it to flow more easily. Secondly, the greater the amount of dissolved gases in the magma, the less viscous it will be, and lastly the higher the silica content, the more viscous it will be. Thicker, more viscous magma has a greater potential for explosive eruptions and therefore represent the greatest potential hazards.
Introduction The quantity of fission products in a nuclear reactor is dependent on the amount of fission occurring, which is directly related to fuel burnup. Therefore it follows that increased fuel burnup causes a rise in the quantity of fission products. Fission product behavior negatively impacts fuel performance in a number of different ways. The negative impacts on fuel performance that fission byproducts have include fuel swelling, pressure and stress on the cladding, as well as decreased thermal performance of the fuel; all of which limit the amount of burnup a reactor can undergo. The neutralization, reduction, or removal of fission products and subsequently their associated negative effects will allow for higher burnup in nuclear reactors.
I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point. This would be due to there being more hydrogen ions present in a more concentrated acid, and therefore more OH- ions needed to neutralise these. When concentration doubles, this means there is twice as many H+ ions; therefore twice as much alkali will be needed to balance them out. Apparatus list:
One vaporization and condensation cycle is called a theoretical plate. The greater the amount of theoretical plates, the better the separation will be. In this experiment, there are two theoretical plates. The first plate is the initial distillation where three different fractions are collected over different temperature ranges. The first fraction is collected at 60-75℃, the second fraction is collected at 75-85℃ and the final fraction is collected at 85-105℃.
Some scientist’s had this view in the past, which has now been refuted and replaced by more current thinking about how elements are arranged. I agree with Evie that the mass of magnesium goes up and my view is formed from the evidence presented by the results of the experiment carries out, the particle and brick models and findings of various scientists in this field. The mass of magnesium increases when it is burnt. The Magnesium reacts with the oxygen in the air to form the compound - magnesium oxide. The powder that remains will have lost some mass as smoke, but this resultant mass is still more than the mass of the metal that was burnt.