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WITCHER [35]
3 years ago
6

[BWS.05H] The diagram below shows an incorrect model of an atom.

Chemistry
1 answer:
VLD [36.1K]3 years ago
5 0

Answer:

The nucleus contains negatively charged particles (electrons) thereby making it to be neutral

Explanation:

An atom contains a centrally placed nucleus containing protons and neutrons while the electrons revolve around the nucleus.

The protons are positively charged while the neutrons has no charge. The electrons are negatively charged.

In the model given above, the centrally placed nucleus has negatively charge particles together with the positive charge particles thereby making it to be neutral. This is not acceptable as the nucleus of an atom is always positively charged.

The correct model of the atom should only have positive nucleus because the neutrons have no charge while negatively charged electrons revolve around.

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The time required to reduce the concentration from 0.00757 M to 0.00180 M is equal to 1.52 × 10⁻⁴ s. The half-life period of the reaction is 9.98× 10⁻⁵s.

<h3>What is the rate of reaction?</h3>

The rate of reaction is described as the speed at which reactants are converted into products. A catalyst increases the rate of the reaction without going under any change in the chemical reaction.

Given the initial concentration of the reactant, C₀= 0.00757 M

The concentration of reactant after time t is C₁= 0.00180 M

The rate constant of the reaction, k = 37.9 M⁻¹s⁻¹

For the first-order reaction: C_t =C_0-kt

0.00180 = 0.00757 - (37.9) t

t =  1.52 × 10⁻⁴ s

The half-life period of the reaction: t_{\frac{1}{2} } =\frac{C_0}{2k}

t_{\frac{1}{2} } =\frac{0.00757}{2\times 37.9}

Half-life of the reaction = 9.98 × 10⁻⁵s

Learn more about the rate of reaction, here:

brainly.com/question/13571877

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