When a 6.35-g sample of magnesium metal is burned, it produces enough heat to raise the temperature of 1,910 g of water from 24.00°c to 33.10°c. how much heat did the magnesium release when it burned?

the heat released by the magnesium is 72 kJ

Explanation:

the heat exchanged will be

Q = m*c*(T final - T initial)  

where Q= heat released, c= specific heat capacity, T initial= initial temperature of water, T final = final temperature of water

Assuming the specific heat capacity of water as c= 1 cal/g°C=4.186 J/g°C

replacing values

Q = m * c* (T final - T initial) = 1910 g * 4.186 J/g°C*(33.10 °C - 24°C) =  72 kJ

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia