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otez555 [7]
4 years ago
8

The atomic theory proposed by dalton has been

Chemistry
1 answer:
Sidana [21]4 years ago
3 0

What did Dalton's atomic theory contribute to science?

Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

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When an atom gains or loses electrons and has and does not have an equal number of
aksik [14]

Answer:

it is called an ion

Explanation:

if it gains electrons then it is an anion

if it gains protons it is a cation

typically non metals are anions and metals are cations

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2 years ago
What are some physical properties of a candle
Troyanec [42]
The wick and the wax

Sorry if that was useless, I'm not sure how generalized you were being

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What are examples of everyday chemical reactions?
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<span>Photosynthesis Is a Reaction To Make Food</span>
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3 years ago
Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s
bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

The equation used to calculate half life for first order kinetics:

k=\frac{0.693}{t_{1/2}}

where,

t_{1/2} = half-life of the reaction = 9.0 s

k = rate constant = ?

Putting values in above equation, we get:

k=\frac{0.693}{9}=0.077s^{-1}

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}     ......(1)

where,

k = rate constant  = 0.077s^{-1}

t = time taken for decay process = 50.7 sec

[A_o] = initial amount of the reactant = ?

[A] = amount left after decay process =  0.0741 M

Putting values in equation 1, we get:

0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}

[A_o]=3.67M

Now, calculating the time taken by using equation 1:

[A]=0.0055M

k=0.077s^{-1}

[A_o]=3.67M

Putting values in equation 1, we get:

0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s

Hence, the time taken by the reaction is 84.5 seconds

6 0
3 years ago
Write a question here it’s simple.
dusya [7]

Answer:

what type of question?

Explanation:

whats your favorite color???

3 0
3 years ago
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