You discover some bones that have roughly %s as much carbon-14 in them as
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The distance from the thermal energy source affect the amount of thermal energy transfer occurring in a substance in a way that area that the radiation is spread over is four times as large for just the double distance.
Thermal energy that can transfer between substances always does so from one that is warmer to one that is cooler. Conduction, convention, and radiation are the three categories. Distance causes the heat radiation emitted by a source, such the sun, to disperse.
As it moves away from the source, the same quantity of energy is dispersed over a larger and larger sphere every second. For simply the twice distance, the radiation's distribution area is four times as large.
The solar constant (also known as the solar coefficient), abbreviated S, refers to the Sun's intensity on Earth, , in units. This information reveals how much radiation enters a square metre of Earth (or any other planet at a similar distance from the sun).
Learn more about radiation here;
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Answer : Mass of copper (Cu) metal obtained = 556.281 g
Solution : Given,
Mass of copper ore = 1 Kg = 1000 g
From the periodic table, the molar mass of copper and copper ore are
Molar mass of copper = 63.546 g/mole
Molar mass of copper ore, = 342.678 g/mole
First we have to calculate the number of moles of copper ore,
Moles of =
=
= 2.918 moles
The balanced chemical reaction is :
From this chemical reaction, we conclude that
2 moles of gives → 6 moles of Cu
2.918 moles of gives →
= 8.754 moles
Thus, the Moles of copper (Cu) = 8.754 moles
Now, calculate the Mass of copper (Cu).
Mass of copper (Cu) = Moles of copper (Cu) × Molar mass of copper (Cu)
= 8.757 moles × 63.546 g/moles
= 556.281 g