1. Vinegar is normally assumed to be a 5% acetic acid solution by weight (w/w) meaning that the concentration of acetic acid is 5 grams per 100 grams of solution. If you assume that the density of vinegar is 1.0 g/mL, calculate the percentage of acetic acid (w/w) in vinegar that you determined in this experiment. Determine the percent error if you assume the vinegar is exactly 5.0 grams of acetic acid per 100.0 grams of solution.

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.

can you list the answers so i can answer

answer: they produce more slow than unicellular organisms.

i'm wiling to try and you : )