3 years ago

What was the result of the atomic theory?

1 answer:

5 0

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. ... Dalton also postulated that chemical reactions resulted in the rearrangement of the reacting atoms.

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Lipids are soluble in a class of solvents called????

dsp73

Lipids are in a class called fat or lipid solvents.

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3 years ago

Enter the atomic symbol, including mass number and atomic number, for iodine-130.

WINSTONCH [101]

<u>Answer:</u> The atomic symbol of the given element is $_{53}^{130}\textrm{I}$

<u>Explanation:</u>

The general isotopic representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents the atomic number of the element

A represents the mass number of the element

X represents the symbol of an element

For the given isotope: 130-iodine

Mass number = 130

Atomic number = 53

Hence, the atomic symbol of the given element is $_{53}^{130}\textrm{I}$

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3 years ago

I really need help solving this question

olchik [2.2K]

The answer to this would be helium

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3 years ago

Read 2 more answers

Hi ! Could someone help me out with this last part to my chemistry practice ? Thank you !

skelet666 [1.2K]

After 100years, sample is 250g

After 200 years, sample is 125g

After 300years, sample is 62.5 g

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3 years ago

Fluorine + sodium chloride → sodium fluoride + __________. What is the missing chemical name?

Deffense [45]

Answer:

Chlorine (Cl)

Explanation:

The equation would be:

$F+NaCl$ → $NaF + Cl$

This is because no atom is lost in a reaction. Chlorine would be the missing chemical as it is on the other side of the equation and needs to be accounted for on the products side.

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2 years ago