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Paul [167]
4 years ago
11

Would your work in cleaning the beach be considered physical or a chemical change to the environment? Explain your reasoning.

Chemistry
1 answer:
gregori [183]4 years ago
6 0
Physical because it can easily turn back into the original "substance"
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What forces create the bent triatomic shape of a water molecule
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Answer:

Repulsion Forces create the bent triatomic shape of a water molecule.

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3 years ago
The movement of Earth's tectonic plates is related to A. seasonal changes in weather systems. B. cycles of sunspots. C. movement
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c) the movement of the materials in the mantle

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3 years ago
) determine the theoretical yield and the percent yield if 21.8 g of k2co3 is produced from reacting 27.9 g ko2 with 29.0 l of c
Airida [17]
The Balanced Chemical Equation is as follow;

                         4 KO₂  +  2 CO₂    →    2 K₂CO₃  +  3 O₂

First find out the Limiting Reagent,
According to equation,

         284 g (4 moles) KO₂ reacted with  =  44.8 L (2 moles) of CO₂
So,
                  27.9 g of KO₂ will react with  =  X  L of CO₂


Solving for X,
                          X  =  (44.8 L × 27.9 g) ÷ 284 g

                          X  =  4.40 L of CO₂

Hence, to consume 27.9 g of KO₂ only 4.40 L CO₂ is required, while, we are provided with 29 L of CO₂, it means CO₂ is in excess and KO₂ is is limited amount, Therefore, KO₂ will control the yield of K₂CO₃. So,

According to eq.

         284 g (4 moles) KO₂ formed  =  138.2 g of K₂CO₃
So,
         27.9 g of KO₂ will form  =  X g of K₂CO₃

Solving for X,
                        X  =  (138.2 g × 27.9 g) ÷ 284 g

                        X  =  13.57 g of K₂CO₃

So, 13.57 g of K₂CO₃ formed is the theoretical yield.

%age Yield  =  13.57 / 21.8 × 100

%age Yield  =  62.24 %
3 0
4 years ago
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oxygen, carbon, hydrogen, nitrogen, and sulfur

Explanation:

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At a temperature of 393 K, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478
torisob [31]
The answer would be B I just took the test
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