Chemistry, 23.08.2019 12:30 Garrell

Nitrogen gas (n2) and hydrogen gas (h2) combine to form ammonia (nh3). which equation correctly represents this reaction? a. n + h → nh b. 2n2+ h2 → 3nh3 c. 2nh → n + 3h2 d. n2+ 3h2 → 2nh3

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Answer from: smallp0720

The equation that correctly represent the reaction for formation of ammonia is

N2+ 3H2 → 2NH3 (answer D)

1 mole of nitrogen gas (N2) react with 3 moles of hydrogen gas (H2) to form 2 moles of ammonia ( NH3). This is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. The process is exothermic hence energy is released.

Answer from: genyjoannerubiera

The equation that correctly represent the reaction for formation of ammonia is

N2+ 3H2 → 2NH3 (answer D)

Answer from: hammackkatelyn60

The last one as nitrogen and hydrogen travel in pairs and the equation also has to be balanced which is all true for D

Answer from: Quest

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.

Write 15 uses of a mercury barometer along with its characterestics

Answer from: Quest

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

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Nitrogen gas (n2) and hydrogen gas (h2) combine to form ammonia (nh3). which equation correctly repr...

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