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asambeis [7]
3 years ago
9

Which statement is most likely true?

Chemistry
2 answers:
guapka [62]3 years ago
6 0

Answer:

Ernest Rutherford’s experiment led to the nuclear model of the atom.

Explanation:

pentagon [3]3 years ago
5 0
Nothing is shown sorry

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What is the change of state involved in combustion of an alcohol and it’s entropy ?
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idkwhat is thr qution

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3 years ago
How is light produced in an atom?
Nadya [2.5K]

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light is the result of electrons moving between defined energy levels in an atom called shells.

Explanation:

when something exited an atom like collision with another atom or a chemical reaction, an electron may absorb energy boosting it to a higher level shell.

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2 years ago
If 3.75 moles of aluminum react, how many moles of sulfur are needed?
aliya0001 [1]

Answer:(A) 0.70 mol

Explanation:

5 0
3 years ago
Given that the freezing point depression constant for water is 1.86°c kg/mol, calculate the change in freezing point for a 0.907
melamori03 [73]

Answer : The correct answer for change in freezing point = 1.69 ° C

Freezing point depression :

It is defined as depression in freezing point of solvent when volatile or non volatile solute is added .

SO when any solute is added freezing point of solution is less than freezing point of pure solvent . This depression in freezing point is directly proportional to molal concentration of solute .

It can be expressed as :

ΔTf = Freezing point of pure solvent - freezing point of solution = i* kf * m

Where : ΔTf = change in freezing point (°C)

i = Von't Hoff factor

kf =molal freezing point depression constant of solvent.\frac{^0 C}{m}

m = molality of solute (m or \frac{mol}{Kg} )

Given : kf = 1.86 \frac{^0 C*Kg}{mol}

m = 0.907 \frac{mol}{Kg} )

Von't Hoff factor for non volatile solute is always = 1 .Since the sugar is non volatile solute , so i = 1

Plugging value in expression :

ΔTf = 1* 1.86 \frac{^0 C*Kg}{mol} * 0.907\frac{mol}{Kg} )

ΔTf = 1.69 ° C

Hence change in freezing point = 1.69 °C

5 0
3 years ago
What is TRUE of a mixture?
jolli1 [7]

Answer:

It retains the properties of the substances that make it up

Explanation:

Mixture show the properties of substances like a mixture of iron filling and sulphur show properties of both

8 0
3 years ago
Read 2 more answers
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