This article is available at 5 reading levels at https://newsela. com. 5 Which of the following is an example of the Law of Conservation of Mass? (A) slowly eating an ice cream to make it last as long as possible (B) wind rustles leaves in a tree (C) a cup of ice melts and liquid water remains (D) someone picks up trash in their neighborhood

Hi there!

The correct answer is: C. a cup of ice melts and liquid water remains

Explanation:

conservation of mass: mass cannot be created or destroyed

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.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2