Answer:
0.0305mol
Explanation:
CaCO3 ---> CaO + CO2
Mass of CaCO3 mol = 40 + 12 + (16 x 3) = 100g/mol
Number of CaCO3 moles heated = 3.05/100 = 0.0305 mol
One CaCO3 mol produces 1 mol CO2
Therefore 0.0305mol of CO2 produced.
The maximum radiation pressure exerted by sunlight in space on a flat black surface is 4.5 × 
P a. So, the correct option is (b).
Radiation pressure is the name for the force electromagnetic wave particles exert on a surface. It is inversely related to the wave's speed. Given data
Solar constant ( S ) = 1350W / m ^2
Now, the radiaton pressure is given by
P = 2 S /c
where c is the speed of the light
P = 2 × 1350 /3 × 10 ^8
P = 9 × P a
For a black surface, P = 4.5× P a
Therefore, maximum radiation pressure exerted by sunlight in space on a flat black surface is 4.5 × P a
Learn more about radiation pressure here;
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Answer:
The molar mass and molecular weight of Sn(CO3)2 is 238.728.
Explanation:
Answer:
54
Explanation:
Given symbol of the element:
I⁻
Number of electrons found in an ion with the symbol:
This is a iodine ion:
For an atom of iodine:
Electrons = 53
Protons = 53
Neutrons = 74
An ion of iodine is one that has lost or gained electrons.
For this one, we have a negatively charged ion which implies that the number of electrons is 1 more than that of the protons.
So, number of electrons = 53 + 1 = 54
The number of electrons in this ion is 54
the melting point of water is 32 degrees Fahrenheit , 0 degrees Celsius. <span />
