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3 years ago

8

What factors affect the speed of a wave? Check all that apply. the amplitude of the wave the energy of the wave the temperature

of the medium the type of wave the type of medium

1 answer:

Lena [83]3 years ago

4 0

Answer:

I believe its 1,2, and 5

Explanation:

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Petroleum is a mixture of hydrocarbons and boiling point of hydrocarbon increases with

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Petroleum is a mixture of hydrocarbons. Each hydrocarbon consists of carbon and hydrogen atoms. A hydrocarbon contains carbon chain and its boiling and melting points increase with increase in length of the carbon chain. The length of the carbon chain increases with increase in the number of carbon atoms forming bonds. Therefore, the boiling point of hydrocarbon increases with increase in the number of carbon atoms.

(Answer) (2) increase in the number of carbon atoms.

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An acid can be considered a substance that _____ a proton

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Answer:

Donates.

Explanation:

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Diol oxidation without C-C bond breakage ....which products are formed??

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If its oxidised, water and carbon dioxide is formed.

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3 years ago

Calculate the molecular weight of a substance. In which the solution of this substance in the water has a concentration of 7 per

Eduardwww [97]

Answer : The molecular weight of a substance is 157.3 g/mol

Explanation :

As we are given that 7 % by weight that means 7 grams of solute present in 100 grams of solution.

Mass of solute = 7 g

Mass of solution = 100 g

Mass of solvent = 100 - 7 = 93 g

Formula used :

$\Delta T_f=i\times K_f\times m\\\\T_f^o-T_f=k_f\times\frac{\text{Mass of substance(solute)}\times 1000}{\text{Molar mass of substance(solute)}\times \text{Mass of water(solvent)}}$

where,

$\Delta T_f$ = change in freezing point

$T_f^o$ = temperature of pure water = $0^oC$

$T_f$ = temperature of solution = $-0.89^oC$

$K_f$ = freezing point constant of water = $1.86^oC/m$

m = molality

Now put all the given values in this formula, we get

$(0-(-0.89))^oC=1.86^oC/m\times \frac{7g\times 1000}{\text{Molar mass of substance(solute)}\times 93g}$

$\text{Molar mass of substance(solute)}=157.3g/mol$

Therefore, the molecular weight of a substance is 157.3 g/mol

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4 years ago

The Law of Conservation of Energy is one of the most important principles in all of science. What does conservation mean in this

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I think it’s protection from running out?

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