A sample of iron having a mass of 93.3g is heated to 65.58OC is placed in 75.0g ofwater raising the temperature from 16.95 OC to 22.24 OC. Find the specific heatcapacity for this iron sample. The answer you find has had some lab errors due tohuman mistakes. Find your percent error for your work using %Error = [(Expected - Actual) / (Expected Yield)] x100

the answer is A:

Photosynthesis release O2 (oxygen)

then animals use oxygen for respiration and release Co2

Final answer:

The correct answer is A) Photosynthesis O2 Respiration CO2. Photosynthesis converts CO2 to O2, which is then used in respiration to be converted back into CO2. Both processes together create a continuous cycle.

Explanation:

The correct diagram that represents the cycling of gases between photosynthesis and respiration is A) Photosynthesis O2 Respiration CO2. Through the process of photosynthesis, plants convert carbon dioxide (CO2) and sunlight into oxygen (O2) and glucose. Organisms, including the plants themselves, then use that oxygen for respiration, during which they convert the oxygen back into carbon dioxide. The glucose is used for energy. This continuous cycling plays a critical role in life on Earth.

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An element is to an atomas an organ is to a cell. Just as atoms are the fundamental building blocks of elements, cells are the basic units of living organisms.

Elements are composed of atoms, each characterized by a specific number of protons, neutrons, and electrons.

Similarly, organs are composed of cells, each with specialized structures and functions that collectively contribute to the overall function of the organ.

The analogy highlights the hierarchical organization of matter and life, emphasizing how complex structures are formed from simpler components.

Just as elements combine to create diverse substances, cells come together to form intricate organs essential for life processes.

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Answer:

An element is to a compound as an organ is to tissue

Explanation:

Answer:

Moisture content in wet basis = 47.4 %    

Explanation:

Moisture content expresses the amount of water present in a moist sample.Dry basis and wet basis are widely used to express moisture content.  

The next equation express the moisture content in wet basis:  

where,  : moisture content in wet basis and  

             : moisture content in dry basis    

We now calculate the moisture content in wet basis:

= 0.474 = 47.4 % wet basis    

Have a nice day!

Explanation:

The reaction expression is given as:

           2H₂  +   O₂    →    2H₂O

The limiting reactant is the reactant in short short supply in the given reaction.

To find the limiting reactant we use the number of moles.

    Mass of H₂  = 5g

    Mass of O₂   = 10g

  Number of moles  =  

       Molar mass of H₂   = 2(1) = 2g/mol

       Molar mass of O₂  = 2(16)  = 32g/mol

Number of moles  H₂ =   = 0.4mole

Number of moles O₂ =   = 0.3mole

   From the balanced reaction equation:

           2 mole of H₂ reacts with 1 mole of O₂

          0.4 mole of H₂ reacts with  0.2 mole of O₂

But we are given 0.3 moles of O₂, so the limiting reactant is H₂ because oxygen gas is in excess

Final answer:

To find the limiting reactant between hydrogen (H₂) and oxygen (O₂) for water (H₂O) formation, convert given masses to moles, compare with the stoichiometry of the balanced equation, and identify that oxygen (O₂) is the limiting reactant as it has fewer moles available than required.

Explanation:

Finding the Limiting Reactant

To determine the limiting reactant in a chemical reaction between hydrogen (H₂) and oxygen (O₂) to form water (H₂O), we must first balance the chemical equation. The balanced reaction is:

Next, we will calculate the molar masses and use them to find the moles of each reactant:

• 
  
•  
• Molar mass of H₂ = 2.02 g/mol
• 
  
•  
• Molar mass of O₂ = 32.00 g/mol

Now, we convert the given masses to moles:

• 
  
•  
• Moles of H₂ = 5.00 g H₂ × (1 mol H₂ / 2.02 g) = 2.48 mol H₂
• 
  
•  
• Moles of O₂ = 10.00 g O₂ × (1 mol O₂ / 32.00 g) = 0.313 mol O₂

According to the stoichiometry of the balanced equation, we need 2 moles of H₂ for every 1 mole of O₂ to react completely. Therefore, the moles needed for the given moles of O₂ are:

Moles of H₂ needed = 0.313 mol O₂ × (2 mol H₂ / 1 mol O₂) = 0.626 mol H₂

Since we have 2.48 mol H₂ and only need 0.626 mol to react with all the available O₂, we can see that we have excess H₂ and not enough O₂. Hence, O₂ is the limiting reactant.

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The question is incomplete; part of the data required in the question are shown:

Theoretical Yield: 2.05 g salicylic acid x (180g aspirin/1 mol) x (1 mol/138 g salicylic acid) 2. Mass of filter paper 2.56 g 3. Mass of filter paper and aspirin 5.42 g 4. Mass of aspirin (3-2) g. Percent Yield [(4)/(1)] x 100

Answer:

107%

Explanation:

We can calculate the theoretical yield as shown;

2.05g salicylic acid × 180g aspirin/1mol × 1 mol/138g of salicylic acid

Theoretical yield= 2.67 g of aspirin

Actual yield of aspirin is obtained from the experimental data;

Mass aspirin + filter paper= 5.42 g

Mass of filter paper= 2.56 g

Mass of aspirin= 5.42 g -2.56 g = 2.86 g

Hence actual yield of aspirin = 2.86 g

Percentage yield = actual yield/theoretical yield × 100

Percentage yield = 2.86/2.67 ×100 = 107%

Answer:

Binding affinity measures the strength of the interaction between a molecule to its ligand; it is expressed in terms of the equilibrium dissociation constant; and the higher value of this constant, the more weaker the binding between the molecule and the ligand is. On the other hand, small constans means that the interaction is tight. So "C" binds most tightly to the enzyme and "D" binds least tightly.