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3 years ago

What causes a water strider to be able to walk on water?

Chemistry

2 answers:

Lena [83]3 years ago

8 0

Answer:

By repelling water, the tiny water striders stand on the water's surface and the captured airs allows them to float and move easily. so number 2. Surface Tension.

Explanation:

The attraction between water molecules creates tension and a very delicate membrane. Water striders walk on this membrane. ... The legs have tiny hairs that repel water and capture air.

Nina [5.8K]3 years ago

4 0

Answer:

Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water.

Hope this helps! (:

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How many grams of water would require 2200 joules of heat to raise it’s temperature from 34 degrees Celsius to 100 degrees celsi

Arada [10]

Answer:

Mass, m = 7.97 grams

Explanation:

We have,

Initial temperature was 34 degrees Celsius

Heat produced in it is 100 calories of heat

The specific heat capacity of water is 4.18 J/g °C

The heat produced due to change in temperature is given by :

$Q=mc(T_f-T_i)$

m is mass of water in grams

$m=\dfrac{Q}{c(T_f-T_i)}\\\\m=\dfrac{2200}{4.18\times (100-34)}\\\\m=7.97\ g$

So, 7.97 grams of water is required to produce heat of 2200 joules.

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2 years ago

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3 years ago

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dexar [7]

I don’t understand your questions can you elaborate

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3 years ago

What is the rate of chemical reaction?

babymother [125]

Explanation:

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3 years ago

Which of the following is a gaseous substance that is liquid or solid at room

Sveta_85 [38]

Answer:

liquid is the correct answer

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