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Alexandra [31]
3 years ago
10

Which of the following is a biotic factor in the picture above?

Chemistry
2 answers:
Black_prince [1.1K]3 years ago
7 0

Answer:GRASS

Explanation:ITS THE ONLY THING LIVING

Sindrei [870]3 years ago
4 0

Answer:

Grass

Explanation:

Because its the only thing living

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Match each chemical reaction with the type of reaction that best describes it.
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2 Al + 6 HCl → 2 AlCl₃ + 3 H₂ (single displacement)

Ca + Br₂  → CaBr₂ (synthesis)

4 NH₃ + 5 O₂  → 4 NO + 6 H₂O (combustion)

2 NaCl → 2 Na + Cl₂ (decomposition)

FeS + 2 HCl → FeCl₂ + H₂S (double displacement)

single displacement - is a chemical reaction of the following type: A + BC → AC + B

double displacement - is a chemical reaction of the following type: AB + CD → AC + BD

synthesis - the chemical product is obtained by combining in a synthesis the constituent elements

combustion - usually a exothermic reaction of a particular compound with oxygen

decomposition - degradation of a compound in simpler elements

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Calcula el pH de las siguientes sustancias formadas durante una erupción volcánica:
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<em>Calculate the pH of the following substances formed during a volcanic eruption: </em>

<em>• Acid rain if the [H +] is 1.9 x 10-5 </em>

<em>• Sulfurous acid if [H +] = 0.10 </em>

<em>• Nitric acid if [H +] = 0.11</em>

<em />

<h3>Further explanation  </h3>

pH is the degree of acidity of a solution that depends on the concentration of H⁺ ions. The greater the value the more acidic the solution and the smaller the pH.  

pH = - log [H⁺]  

  • pH acid rain

\tt pH=-log[1.9\times 10^{-5}]\\\\pH=5-log1.9\\\\pH=4.72

  • pH Sulfurous acid

\tt pH=-log[10^{-1}]\\\\pH=1

  • pH Nitric acid

\tt pH=-log[11\times 10^{-2}]\\\\pH=2-log~11=0.959

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Which statement best describes an array of 10 elements where the elements are of a class type?
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The array will be created with the elements equal to null.
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According to the law of conservation of energy, the energy released by the system must be transferred to and absorbed by the sur
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True! 
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