A quantity of 50.0 mL of 1.200 M HCl was mixed with 50.0 mL of 1.200 M NaOH in a beaker that was placed in a coffee-cup style calorimeter. The mass of the empty beaker was 52.689 g. When the reaction was complete, the temperature had increased by 4.96 oC. The beaker and the solution collectively had a mass of 149.988 g. Assume the specific heat of the solution is 4.184 J g-1 oC-1 and the specific heat for the beaker is 0.840 J g-1 oC-1. Determine the enthalpy of neutralization of HCl and NaOH based on these data. Express your answer in kJ/mol. You must upload work for this question to earn credit.

beta decay is the answer

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.