Aluminum reacts with hydrochloric acid to produce aluminum chloride and hydrogen. Write a balanced equation for the reaction and calculate the number of moles of hydrochloric acid required to react with 0.87 mole of aluminum.

The balanced equation for the reaction:

The moles of hydrochloric acid required are 2.61 moles.

Explanation:

Aluminum reacts with hydrochlorioc acid to gove aluminum chloride and hydrogen gas as products.

The balanced chemical equation is given as:

Moles of aluminum = 0.87 mol

According to a chemical reaction, 2 moles of aluminum reacts with 6 moles of hydrochloric acid, then 0.87 moles of aluminum will react with:

The moles of hydrochloric acid required are 2.61 moles.

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.

the answer is 1 i believe