Answer: 26.8 kJ of energy is needed to vaporize 75.0 g of diethyl ether
Explanation:
First we have to calculate the moles of diethyl ether
As, 1 mole of diethyl ether require heat = 26.5 kJ
So, 1.01 moles of diethyl ether require heat =
Thus 26.8 kJ of energy is needed to vaporize 75.0 g of diethyl ether
Answer: B(water)
Explanation:
Photosystem II uses energy from light to extract electron from water molecule to fill the hole left as the energized electron passes up the chain.When the electrons are removed from the water molecules,the water molecule breaks down into oxygen gas,which bubbles away, and hydrogen ions,which are used to power ATP synthesis.
Answer:
In the absence of ethylene hormone,growth and development of plant do't takes place.
Explanation:
Ethylene is an important plant hormone that in produced by plants for the purpose of growth, development and respond to stress for various purpose through out it's life cycle.
They are volatile and are also required in the field of agriculture for ripening of fruits, seed germination, root stem development,sex determination etc.
Over use of ethylene may provide harmful impact on the plant as it spoil the products.