write the word equations, one for each chemical reaction where the following conditions are found.
a) evaluation of gas,
b) contact in solution,
c) use of pressure,
d) use of electricity,
e) use of heat,
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Answer:
A) zinc+hydrochloric acid-->zinc chloride +hydrogen gas +heat
4)water electricity > oxygen+water
5)leadnitrate heat >lead monoxide + nitrogen gas+oxygen gas
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