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solniwko [45]
2 years ago
15

Which options identify what the arrows in the diagram

Chemistry
1 answer:
Stolb23 [73]2 years ago
8 0

Answer:

D

Explanation:

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Imagine a moving boat making waves in the middle of a pool of water. Also, imagine two observers, one behind the boat and one in
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The person who is behind the boat will see much powerful and bigger waves than the person who is in front of the boat. This phenomenon is caused by the Doppler effect which describes the changes in the observed frequency of a wave whenever there is relative motion between the wave source and the observer.
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A student listed three ways to predict if a bond is ionic.
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1 and 3 only because metal are easily to loss electron while non metal are difficult to loss electron that's why it called heavy elements.
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3 years ago
Is there any easy tip to balance the eauation.
Viefleur [7K]

Answer:

Explanation:

You just have to see the REACTANTS and PRODUCTS and look how much molecules are there and accordingly put numbers.

Eg:4Fe+3O2--------->2Fe2O3

5 0
3 years ago
Fe2O3 + CO --> Fe + CO2
satela [25.4K]

Answer:

The answer to your question is

1.-Fe₂O₃

2.- 280 g

3.- 330 g

Explanation:

Data

mass of CO = 224 g

mass of Fe₂O₃ = 400 g

mass of Fe = ?

mass of CO₂

Balanced chemical reaction

                       Fe₂O₃   + 3CO    ⇒  2Fe  +   3CO₂

1.- Calculate the molar mass of Fe₂O₃ and CO

Fe₂O₃ = (56 x 2) + (16 x 3) = 160 g

CO = 12 + 16 = 28 g

2.- Calculate the proportions

theoretical proportion Fe₂O₃ /3CO = 160/84 = 1.90

experimental proportion Fe₂O₃ / CO = 400/224 = 1.78

As the experimental proportion is lower than the theoretical, we conclude that the Fe₂O₃ is the limiting reactant.

3.-     160 g of Fe₂O₃  --------------- 2(56) g of Fe

         400 g of Fe₂O₃ ---------------  x

         x = (400 x 112) / 160

        x = 280 g of Fe

4.-      160 g of Fe₂O₃  --------------- 3(44) g of CO₂

          400 g of Fe₂O₃  --------------  x

          x = (400 x 132)/160

         x = 330 gr

3 0
3 years ago
Which one is false PLEASE HELP
Mkey [24]

Answer:

D

Explanation:

because solar energy is still one of the best technology ever inverted and it is a power saving energy infact most of the things we use this days are solar generated.

3 0
1 year ago
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