These equations represent the results of dissolving different substances in water. for each dissolution,
the results of a conductivity test are given. the conductivity test involves placing wires connected to a
battery and a light bulb into the solution. if the solution is able to conduct electricity, the bulb will light.
identify each substance as a strong electrolyte, weak electrolyte, or nonelectrolyte.
(nh4)2so4(s) -> 2nh4+ (aq) + so4 (aq) light bulb glows brightly:
cuso4(s) → cu2+(aq) + s022-lag light bulb glows brightly:
hfc) + → h30*(aq) +f- (aq) light bulb glows faintly:
c3h60(1) - c3h6o(ag) light bulb does not glow:

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

i wish i could but this one is weird give me abc and i can solve it.