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Zinaida [17]
4 years ago
8

A network of all of the feeding relationships in an ecosystem is called ______.

Chemistry
1 answer:
Alex777 [14]4 years ago
7 0
A) a food chain ———-
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According to the Law of Conservation of Mass, how many grams of product will be produced when 4 grams of reactants are involved
denis-greek [22]

The answer is four. The law of conservation of mass basically says that whatever is but in will always have the same mass coming out. so for example if you had 10 grams of water and then you heated it up, it is still 10 grams of water.

3 0
3 years ago
The density of ethanol was determined experimentally at 25°C in a series of trials to be 0.608 g/mL, 0.705 g/mL, and 0.689 g/mL.
Studentka2010 [4]

Answer:

15.46%

0.667 g/mL (more o less) 0.052 g/mL (standard deviation)

Explanation:

To solve the problem, it is necessary calculate the average:

(0.608 g/mL + 0.705 g/mL + and 0.689 g/mL) / 3= 0.667 g/mL

standard deviation= 0.052

Now, let us calculate the % error:

[(0.789 g/mL - 0.667 g/mL) / 0.789 g/mL] * 100% = 15.46%

8 0
3 years ago
A. draw the structure of the tetrahedral intermediate initially-formed in the reaction shown. reactions of esters with
emmainna [20.7K]
As there is no specific example given, I am giving general reaction of Ester. In this reaction the hydrolysis of Ester is carried out. And the tetrahedral intermediate initially formed is Highlighted as RED. The final product of the reaction is corresponding Carboxylic Acid.

5 0
3 years ago
What is the mass of 4.02 mol Ba(NO2)2
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What is a resistor that can stop most
aev [14]

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