The number of mole of ethanol, CH₃CH₂OH the chemist will use in the experiment is 0.65 mole
<h3>Description of mole </h3>
The mole of a substance is related to it's mass and molar mass according to the following equation:
Mole = mass / molar mass
<h3>How to determine the mole of CH₃CH₂OH</h3>
From the question given above, the following data were obtained:
- Mass of CH₃CH₂OH = 30 g
- Molar mass of CH₃CH₂OH = 12 + (1×3) + 12 + (1×2) + 16 + 1 = 46 g/mol
Mole = mass / molar mass
Mole of CH₃CH₂OH = 30 / 46
Mole of CH₃CH₂OH = 0.65 mole
Learn more about mole:
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Answer:
This is an SAT question, so I will be proofreading this for grammar.
The first pizza should be capitalized.
Peparoni is spelled wrong
Pinaple is spelled wrong
wisely is spelled wrong
There should be a period between "pinaple" and "choose"
The first half beginning with "pizza" and ending with "pinaple" is an incomplete sentence.
By the way, I would prefer pineapple.
The correct answer is - C. A male black bear eats fish in an area of a lake, so other black bears can't.
The intraspecific competition is a competition between the members of the same species for resources and territory. The indirect competition, in this case, would mean that the members from the same species do not get into a direct physical confrontation over the resources, but instead avoid each other and once one member occupies one place, the other one goes to another space that is not occupied.
In this case, with the black bear, the bear has occupied a spot at the lake where it feeds itself. Even though it is using the food resources, the other bears don't physically confront it, but instead pick another place on the lake that is free for using the same food resources.
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