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eimsori [14]
3 years ago
12

The following examples show how energy is transferred from one trophic level to the next.

Chemistry
2 answers:
Gala2k [10]3 years ago
7 0

Answer:Energy is transferred along food chains, however, the amount of available energy decreases from one trophic level to the next. The reason for this is that only around 10 per cent of the energy is passed on to the next trophic level. ... it is released as heat energy during respiration.

Explanation: Hope this help

WINSTONCH [101]3 years ago
6 0
Divide by 10 each time
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Aqueous hydrochloric acid HCl will react with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid wat
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Answer:

0.26g of NaCl is the maximum mass that could be produced

Explanation:

Based on the reaction:

HCl + NaOH → NaCl + H₂O

<em>Where 1 mol of HCl reacts per mol of NaOH to produce 1 mol of NaCl</em>

<em />

To solve this question we need to find <em>limiting reactant. </em>The moles of limiting reactant = Moles of NaCl produced:

<em>Moles HCl -Molar mass: 36.46g/mol-:</em>

0.365g HCl * (1mol / 36.46g) = 0.010 moles HCl

<em>Moles NaOH -Molar mass: 40g/mol-:</em>

0.18g NaOH * (1mol / 40g) = 0.0045 moles NaOH

As the reaction is 1:1 and moles NaOH < moles HCl, limiting reactant is NaOH and maximum moles produced of NaCl are 0.0045 moles.

The mass of NaCl is:

<em>Mass NaCl -Molar mass: 58.44g/mol-:</em>

0.0045 moles * (58.44g/mol) =

<h3>0.26g of NaCl is the maximum mass that could be produced</h3>
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3 years ago
The top of the plate where food is placed is called:
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Design Shape

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3 0
3 years ago
In the reaction HCl + NaOH → NaCl (aq) + H2O , if 45.0 milliliters of a 2.0 M HCl react in an excess of NaOH, how many grams of
BaLLatris [955]
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2) 1 mol HCl : 1 mol NaOH: 1 mol NaCl : 1 mol H2O

3) 45.0 ml of 2.0 M HCl => M = n / V => n = M*V = 2.0 M * 0.0450 l = 0.090 moles

4) 0.090 moles of HCl => 0.090 moles of water

molar mass of water = 18.0 g/mol

mass of H2O = moles * molar mass = 0.090 mol * 18.0 g/mol = 1.62 g

Answer: 1.62 g
4 0
4 years ago
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