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astraxan [27]
4 years ago
15

Dalton’s theory states that atoms are the smallest possible parts of elements. In a chemical reaction, atoms will rearrange and

form new substances with new properties. change form into completely new atoms with new properties. be destroyed and remade into new substances. be turned completely into energy.
Chemistry
2 answers:
makkiz [27]4 years ago
8 0

Answer: A rearrange and form new substances with new properties.

Explanation: Got it right on Edgenuity

USPshnik [31]4 years ago
4 0

Answer:

Atoms will rearrange and for new substances

Explanation:

In a chemical reaction, elements combine their atoms and create new substances. For this to occur, the bonds must break and form new ones with the other atoms.

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the company calculated that they would produce 4.8 tonnes of magnesium but only 3.2 tonnes was produced calculate the percentage
Aneli [31]
To find the percentage yield you must take the actual yield and divide it by the theoretical yield and times it by 100. (Percent yield=Actual/Theoretical * 100)
For this example the calculated (Theoretical value) was 4.8 tones and the tones produced (Actual value) was 3.2 tones.
So 3.2/4.8 *100 = 66.6666666….
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3 0
2 years ago
Will BeCO3 Hydrolyze in aqueous medium?. If so how?... very urgent..​
irinina [24]

Answer:

BeCO3 will hydrolyze in an aqueous medium, yielding a basic solution.

Explanation:

In accord with the rules of salt hydrolysis, the cation Be^{2+} can hydrolyze. The anion CO_{3} ^{2-} can also hydrolyze, given that the resulting conjugate acid is weak.

Given that both ions hydrolyze, the Ka (acid ionization constant) and Kb (Base ionization constant) of each reactant (or product [that is, the conjugate acid and base for each ion]) must be compared.

Using the web (hopefully some sort of reference table has been provided to you):

Ka (for Be^2+) = 3 * 10^{-7}

Kb (for CO3^2-) = \frac{Kw (water)}{Ka (HCO3)}

= \frac{1*10^{-14}}{4.7*10^{-11}}

= 2.1 * 10^{-4}

The Kb > Ka, so the solution will be basic.

Hope this helps! My apologies if this answer is incorrect, I have not done this type of problem in a while.

7 0
1 year ago
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