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pantera1 [17]
2 years ago
5

Water's high surface tension allows insects called water striders to stand on the surface of water. What would you expect to hap

pen to a water strider
If you poured detergent, a surfactant, into the water on which the water strider is standing?

A. It would sink into the water.
B. It would move over the water more easily.
C. It would be stuck to the same spot in the water.
D. It would slip and slide over the surface of the water.
Chemistry
1 answer:
nikdorinn [45]2 years ago
7 0

The addition of detergent to water will break the surface tension and this would make the water strider sink into the water.

<h3>Surface tension and detergents</h3>

The surface tension of water is broken by the addition of detergents or surfactants.

With surface tension, the water strider is able to walk on water.

With surface tension broken as a result of the addition of detergents or surfactants, water striders will not be able to work on water. Instead, the insect will sink into such waters.

More on surface tension can be found here: brainly.com/question/571207

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Fe2O3 + CO --&gt; 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
Select the correct answer.
Lera25 [3.4K]

Answer:

1s^{2}2s^{2}2p^{6}3s^{2}3p^{4}

Explanation:

S is in 3d period, so it has 3 levels

1 level has 2 electrons, 2d level 8 electrons, 3d level 6 electrons

1s^{2}2s^{2}2p^{6}3s^{2}3p^{4}

3 0
4 years ago
If this is a p1000 micropipette, then this is set to dispense [ Select]ul. If this is a p10
mariarad [96]

Answer:

1000 µL; 10 µL  

Explanation:

A p1000 micropipet is set to dispense 1000 µL.

A p10 micropipet set to dispense 10 µL.

3 0
4 years ago
Which is not a particle within an atom
Colt1911 [192]
An ion is not a particle within the atoms
7 0
3 years ago
Read 2 more answers
Potential energy sample question: A block is sitting on a platform 20 m high. It weighs 50 kg. How much potential energy does it
ioda

Answer:

The potential energy is 9800 J.

Explanation:

given information:

mass, m = 50 kg

height, h = 20 m

to calculate the potential energy, we can use the following formula

PE = mgh

where

PE = potential energy (Joule)

m = mass (kg)

h = height (m)

g = gravitational constant (9.8 m/s²)

so,

PE = mgh

    = 50 x 9.8 x 20

    = 9800 J

3 0
4 years ago
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