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Answer:
The example of reflection of light is surface of smooth pool of water and the example of reflection of sound is echo.
Answer:
option D= Gold (I) nitride
Explanation:
The name of the given compound is gold(I) nitride.
Molar mass can be determine by following way:
molar mass Au3N = (molar mass of gold × 3) + (molar mass of nitrogen)
molar mass Au3N = (196.97 × 3 ) + ( 14 )
molar mass of Au3N = 590.91 g/mol + 14 g/mol
molar mass of Au3N = 604.91 g/mol
The nitrogen has valency of -3 so three Au(+1) will require while the valency of Au is (1+) one nitrogen will require to make the compound overall neutral.
Au3N
3(1+) + (-3) = 0
+3 - 3 = 0
0 = 0
The overall charge is 0, the compound will be neutral.
Answer:
0.44 cal/(g C)
Explanation:
I assume the calorimeter is adiabatic.
First I need the specific heat capacity of iron, this is:
Cp(Fe) = 0.11 cal/(g * C)
Both bodies in the calorimeter will exchange heat until they reach equilibrium at the final temperature. The heat exchanged by each body is:
Q = m * Cp * (tfin - ti)The iron will be giving off heat (negative heat) and the liquid receiving it (positive heat, so:
-m(Fe) * Cp(Fe) *(tfin - ti(Fe)) = m(liq) * Cp(liq) * (tfin - ti(liq))
Rearranging:
So: