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Chemistry, 22.06.2019 09:30
Which element is the least metallic between cadmium, silver, zinc, or iron?
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Chemistry, 22.06.2019 21:00
As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.
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Chemistry, 22.06.2019 21:30
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
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Chemistry, 22.06.2019 21:30
Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.
Answers: 1
When water is mixed with copper sulfate the water turned a blue colour. Is this a physical or chemic...
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