3 years ago

A water bug can walk on water because of the _______ of the water molecules

1 answer:

5 0

The answer is surface tension. The water has an inward attraction because there are no molecules above it (I mean water, at least), and the legs of water bugs repel water, hence, they walk on water.

Hope this helps!

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Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction?

fiasKO [112]

carbon + oxygen → carbon dioxide

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3 years ago

ASAP PLEASE

Natasha2012 [34]

Answer:

Option A.) 2 ppm

Explanation:

60 particles in 30 million can be expressed as a fraction:

$\frac{60}{30million}$

And, dividing both numerator and denominator by 30, that can be simplified as:

$\frac{2}{1million}$

That means 2 particles of sulfur dioxide in 1 million particles of sample, which is 2 parts per million or 2 ppm, which is the option A.

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4 years ago

What's the oxidation # of P in P4O8

svlad2 [7]

As overall compound is neutral so , let oxidation number of P be x

4(x) + (-2)8 = 0

x = +4

8 0

4 years ago

A chemist dissolves 239 mg of pure potassium hydroxide in enough water to make up of solution. Calculate the pH of the solution.

PSYCHO15rus [73]

Answer: the pH is 11.78

Explanation:Please see attachment for explanation

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3 years ago

Calculate the number of atoms in 5 moles H₂O.

oksano4ka [1.4K]

Answer:

90.35 × 10²³ atoms

Solution:

1 molecules of H20 contains 3 atoms,.

And we know that one mole of any molecule contains 6.023 × 10²³ atoms from Avogadro's number,

hence 5 moles of H20 will contain = 5× 6.023 × 10²³ × 3 atoms = 90.35 × 10²³ atoms!

Thanks for joining brainly community!

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3 years ago