3 years ago

Please help. urgent. needs explanation too :( thank you

1 answer:

3 0

Answer:

24) F. 3 mol.......ratio of hydrogen and oxygen is 2:1 , if hydrogen 6 then oxygen 3

25) B. 2.5 moles ......take ration fo 2RbNO3 and O2 which is 2:1 then if RbNO3 has 5 moles these O2 will have 2.5 moles

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uysha [10]

To convert from moles to atoms you times the number of mols by Avogadro's number (6.022×10²³)

0.74 × 6.022×10²³ = 4.45628×10²³

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3 years ago

levacccp [35]

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3 years ago

Svetllana [295]

Generally, 60% of the mass of body is water.

So, amount of water in 100 kg person is:

$100 kg\times \frac{60}{100} = 60 kg$

In order to calculate the mass of a person if all the water were removed, then:

$Mass of the body - Mass of the content of water in the body$

Mass of the body = $100 kg$ [

Mass of the content of water in the body = $60 kg$

Substituting the values:

Mass of a person if all the water were removed = $100 kg -60 kg = 40 kg$ .

Hence the mass of a person who weighs $100 kg$ will weigh $40 kg$ if all the water were removed from the body.

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3 years ago

photoshop1234 [79]

analogous and homologous

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4 years ago

Ganezh [65]

I think 5.50 M x 35.0 mL x molar mass of RbOH = mass (g)

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4 years ago