Convection is primarily a mode of heat transfer which involves the movement of the particles of the medium. It is most notable in fluids i.e liquids and gases.
Gases makes up the atmosphere. Liquids makes up the ocean. Therefore, convection is possible in them.
The process of convection in the atmosphere and ocean is primarily due to density differences.
In the ocean, heat from the sun warms the surface water and it is lighter. The water below is dense. As the surface water loses its heat, it becomes dense and therefore sinks. The sinking water is replaced by the cold water from below. This sets up the ocean currents powered by convection.
In the atmosphere, air close to the ground is very warm. Warm air is light and it will rise. The air high up is cold and it will sink. The cold air will replace the warm air and vice versa. This is the convection in the atmosphere.
Taking into account the definition of calorimetry, 0.0185 moles of water are required.
<h3>Calorimetry</h3>
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).
So, the equation that allows to calculate heat exchanges is:
Q = c× m× ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
<h3>Mass of water required</h3>
In this case, you know:
Heat= 92.048 kJ
Mass of water = ?
Initial temperature of water= 34 ºC
Final temperature of water= 100 ºC
Specific heat of water = 4.186
Replacing in the expression to calculate heat exchanges:
92.048 kJ = 4.186 × m× (100 °C -34 °C)
92.048 kJ = 4.186 × m× 66 °C
m= 92.048 kJ ÷ (4.186 × 66 °C)
<u><em>m= 0.333 grams</em></u>
<h3>Moles of water required</h3>
Being the molar mass of water 18 , that is, the amount of mass that a substance contains in one mole, the moles of water required can be calculated as:
Mantle convection is the moderate crawling movement of Earth's strong silicate mantle brought about by convection flows conveying heat from the inside to the planet's surface. Mantle convection, is a significant technique for heat transport inside the Earth. Mantle convection is the driving component for plate tectonics, which is the procedure eventually liable for delivering tremors, mountain ranges, and volcanoes on Earth. During the movement of warm and cooler mantle rocks, convention cells are created which acts as a pocket that creates force for the movement of tectonic plates.
To solve this question,
let us first calculate how much all the nucleons will weigh when they are apart,
that is: <span>Mass of 25 protons = 25(1.0073) = 25.1825 amu </span>
Mass of neutrons = (55-25)(1.0087) = 30.261 amu
So, total mass of nucleons = 30.261+25.1825 =
55.4435 amu
<span>Now we subtract the mass of nucleons and mass of the Mn
nucleus:
55.4435 - 54.938 = 0.5055 amu
This difference in mass is what we call as the mass defect of
a nucleus. Now we calculate the binding energy using the formula:</span>
<span> E=mc^2 </span>
<span>But first convert mass defect in units of SI (kg):
Δm = 0.5055 amu = (0.5055) / (6.022x10^26) <span>Δm = 8.3942x10^-28 kg</span>
Now applying the formula,
E=Δm c^2
E=(8.3942x10^-28)(3x10^8)^2
E=7.55x10^-11 J</span>
Convert energy from Joules
to mev then divide by total number of nucleons (55):
Answer: Ok I think The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Carbon, or 12.0107 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles Carbon and gram. 12 grams
This means that the atomic mass or atomic weight (12 grams) of carbon is equal to exactly 1 mole of carbon.