How many moles are in 15g of Potassium? How many grams are in 2.4 moles of Oxygen?

How many moles are in 22g of Krypton?

How many grams are in 11.9 moles of Magnesium?

How many moles are in 9.8 grams of Barium?

How many grams are in 238 moles of Copper?

Please help this is due today and may god bless you

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.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.

just did the assignment and the answer was #1 +2 n

i don't know people like to fight everywhere rip.