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Answer:between 25 and 40 degrees Fahrenheit
Explanation:
Heat pumps do not operate as efficiently when temperatures drop to between 25 and 40 degrees Fahrenheit for most systems. A heat pump works best when the temperature is above 40. Once outdoor temperatures drop to 40 degrees, heat pumps start losing efficiency, and they consume more energy to do their jobs.
Answer:
The Balanced chemical equation of incomplete combustion of methane is : {eq}2CH_{4}(g)+3O_{2}(g)\rightarrow... Part(b): P a r t ( b ) : The incomplete combustion might take place whenever there is a low supply or insufficient supply of oxygen during combustion.
Explanation:
Complete combustion reacts oxygen with a fuel to produce carbon dioxide and water. Eg: 2C8H18 + 25O2→ 18CO2 + 16H20.
Answer:
3.14 grams of ammonium thiocyanate must be used to react completely with 6.5 g barium hydroxide octahydrate.
Explanation:
The balance chemical equation is :
Mass of barium hydroxide octahydrate = 6.5 g
Moles of barium hydroxide octahydrate =
According to reaction, 2 moles of ammonium thiocyanate reacts with1 mole of barium hydroxide octahydrate. The 0.020635 moles of barium hydroxide octahydrate will react with:
Mass of 0.04127 moles of ammonium thiocyanate;
3.14 grams of ammonium thiocyanate must be used to react completely with 6.5 g barium hydroxide octahydrate