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Step 7: Put the Metal in the Water and Measure
Temperature Changes (Copper)
The temperature at 300 seconds (5 minutes) is the
final temperature of both the metal and the water.
Record it to the nearest 0.1°C in the data table.
Initial temperature of metal = 100
°C
Initial temperature of water = 22.7
"С
27
--)|
Final temperature of both = 24.6
✓ °C
26
25
COMPLETE
24
Subtract to find the temperature changes
for the water and the metal.
AT (water) = 72.9
X => 1.9°C
23
250 mL
200
150
AT (metal) = -75.4
°C
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more
05:00
COMPLETE
Intro
Final

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.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.