Predict how many compounds you can make from the elements below. Pick one element from the metal list and two from the nonmetal list. For example, "If I use sodium, hydrogen, and oxygen, then I can make ten new compounds in five minutes."

Now, you try! Make a prediction. Be sure to record your prediction on your lab report.

Metal Nonmetal

• Sodium (Na)

• Calcium (Ca)

• Hydrogen (H)

• Oxygen (O)

• Carbon (C)

• Chlorine (Cl)

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.

listen, you cant how young you were.

"you didn't chose the stud life. the stud life chose you."

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;