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3 years ago

Which basic postulates of Dalton's atomic theory are modified by the modern atomic theory

Chemistry

2 answers:

Kisachek [45]3 years ago

6 0

Answer:

Dalton's atomic theory has been modified as

Explanation:

Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes

svetlana [45]3 years ago

3 0

Answer:

On the basis of new experimental facts, Dalton's atomic theory has been modified as: ... Atoms of same element may not have same atomic mass. For example, some atoms of chlorine have atomic mass 35 amu while others have atomic mass 37 amu. Such atoms of same element having different atomic masses are called isotopes.

Explanation:

Plz mark brainliest thanks

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In Part B, we determined the water hardness of a water sample by combining the water sample with a 10.00 mL sample of calcium ch

Verizon [17]

Answer:

The definition is defined throughout the clarification section beneath, and according to the particular circumstance.

Explanation:

Although water samples were supplemented with purified water, the amount of EDTA has would be smaller.
Since there are fewer ions throughout purified water, most of the ions are eliminated throughout distillation, less utilized EDTA.
Complex calcium formation including EDTA will be less complex. Samples used throughout the starting include several Ca⁺², Mg²⁺ ions that have not been found in pure water, causing fewer EDTA volume to enter the final stages.

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4 years ago

How do ionic bonds form in binary compounds? (from discovery education)

Nookie1986 [14]

Answer:

Ionic bonding is the complete transfer of valence electron(s) between atoms and is a type of chemical bond that generates two oppositely charged ions. By losing those electrons, these metals can achieve noble-gas configuration and satisfy the octet rule.

Explanation:

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3 years ago

matter is passed down from the living part of an ecosystem to the non living part when witch of the following take place ?

Ivenika [448]

I don’t know about that

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3 years ago

Butane is a fuel. Its melting point is - 140 °C and its boiling point is -1 °C.

Damm [24]

Answer:

butane will be in gaseous state at 25 degrees and will be solid at -150 degrees.

Explanation:

As 25degrees is the room temperature so the state of butane at 25 degrees will be gaseous while the butane will freeze at -150degrees as it's beyond its melting point, it means it melts at -140degrees , it clearly shows that it exists in solid state before -140degrees.,

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3 years ago

3. At 35 C, a sample of gas has a volume of 256 ml and a pressure of 720.torr. What would the volume

STatiana [176]

Answer:

The volume will be 185.83 mL.

Explanation:

Gay-Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. Gay-Lussac's law can be expressed mathematically as follows:

$\frac{P}{T} =k$

Where P = pressure, T = temperature, k = Constant

Boyle's law says that the volume occupied by a given gaseous mass at constant temperature is inversely proportional to pressure. Boyle's law is expressed mathematically as:

P*V=k

Where P = pressure, V = volume, k = Constant

Finally, Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is kept at a constant pressure. For a given sum of gas at a constant pressure, as the temperature increases, the volume of the gas increases and as the temperature decreases, the volume of the gas decreases because the temperature is directly related to the energy of the movement of the gas molecules. .

In summary, Charles's law is a law that says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

$\frac{V}{T} =k$